At the same time the circuit is also used in all the United States AB carbon resistance, save a more intense flavor, the dynamic has been greatly improved, soft soft voice, female natural charm of the magnetic charm. Use of these parameters shall be entirely at the user's own risk. The truth is you need little to no gain at all in your preamp with today’s sources, amps and speakers. $899. Kit includes circuit board and all components. The 6DJ8 / ECC88 / 6922 vacuum tube are a miniature small signal preamplifier 9-pin medium gain triode vacuum tube on a B9A base with 6. BOUNDLE OFFERS × CART UPDATE Amperex Bugle Boy 6DJ8/ECC88. 00 price includes shipping to Canadian destinations For sale 5 Vintage Amperex Bugle Boy ECC88 6DJ8 Pre amplifier tubes These are Heerlen Factory Holland coded tubes Touching (again?) on the poor PSRR of triode stages, particularly the high-current ones, I might mention that I have used a two-stage transistor/fet follower in series with the power line with a double RC integrator in each base/gate circuit (no constant voltage regulation as such). The ECC88 is a substitute for the 6DJ8. A simple phono preamp using a pair of 6DJ8 (ECC88) tubes. In the phono stage, the plate (anode) of this tube feeds a pair of MOSFETS for additional gain, followed, The EAT Cool Valve ECC88 is the Best 6922 We've Ever Heard The new European-built EAT ECC88 (6DJ8 & 6922) triode tube from the European Audio Team is incredible! We have tried this tube in every component we could find, from phono preamps and line stages to CD players and power amplifiers. 7308 and E188CC and the CCa are super premium versions. The 6N23P/ECC88s were made in Russia by Voskhod in the 70's and early 80's, and are marked with the original Russian code. Many low-cost phono preamps are only good for typical moving-magnet (MM) cartridges. ECC85 RIAA Preamplifier. RIAA is passive RC filter without tone control. The SRPP ambit has additionally been referred to as a SEPP, Totem Pole, Mu Follower, Mu amplifier and Cascoded Cathode Follower. The TAD-6922 / E88CC (~ CCa) is the High-End-Version of the ECC88 or 6DJ8. If you are looking for a tube that has a similar sonic character to this one that will be suitable for use in a preamp, check out the Pope PCC88/7DJ8. Kada podesiš da je napon na pinovima lampe 4-5 6. I've tried lots of different tubes in the 6922/6DJ8/ECC88 tube family and the best sounding I've found are the late 50's, early 60's Made in Holland Amperex EC88's with the pinched waist and gold pins. Home About Us Reviews Wathen CryoTone™ Tubes Most tube preamps and amplifiers run their tubes at high plate voltages and current to achieve high linear gain. This preamp is classic Audio Research - huge detailed spacious soundstage with tube depth of field. 01 2 2 1958. The output uses another ECC88, in SRPP, with some feedback around it. PCB Tube Phono Preamplifier RIAA/LINE ECC88, 81, 82, 83. At my asking price, I will include: a) two sets of Tungsram ECC88 NOS tubes - platinum selection with cryogenic treatment I am currently using a Grant Fidelity DAC-11/Preamp with a Class D Audio CDA 254 amp and my MMG speakers as my second system. Over the past several months, I have been working on a new 2015 Musica Bella LeAnna preamp circuit. The 9 pin ECC88, 6922, 6H23, 6H30 have their place in preamp design, but for line-stage use its hard to beat an octal 6SN7 tube transformer coupled to the output. About 6DJ8 / 6922 Tubes. The CryoTone ECC88-WC offers great articulation, musical tone and a low noise floor. 13) I just purchased a sleeve of Amperex 6DJ8/ecc88. I'm using 7V heater variant – PCC88. This is the tube that all of the other equivalent tubes are based on. 6DJ8 has high conductance which also makes it an excellent tube in audio amplifier. built 7th Sep 2007 Sakura Chiba Japan. ECC88, 6922, 6DJ8 and 6N23P The 6DJ8 is a miniature nine-pin medium gain dual triode vacuum tube . 15 hello, Paul Many moons ago I had on loan from a friend a cascode DIY phono preamp with ECC88 /6922 tubes. Philips ECC88 - SGD 50/pair Similar construction with mullard ECC88 A budget choice for those who wants a better sound 2. 00. Tube used : 6N1P (analog ecc82 ), 6n23p (analog ecc88). I wonder if the ECC88 will work in the 12ax7 preamp slot. Those would  Vacuum Tube - 6922 / E88CC, JJ Electronics - The JJ Electronic E88CC JJ implements a solid construction that those familiar with their preamp tubes will find . It uses the two departments of tube ECC88, association parallel, for reduction of produced noise. Equivalent to the 6DJ8 / ECC88 / 6922. feels the 6922 is superior. Ready to ship now! The case is made of yellow pine. Loading Please wait My Account; Order Status; Wish Lists; The design is almost the same as the 12AX7 preamp, it is a single gain stage triode tube with cathode follower. The JJ is a close second on sound quality, and the fact that it’s the least expensive of all the tubes in this shootout is a bonus. Preamp Tubes – 6922 / 6DJ8 / 7308 / PCC88 Tube Basics and FAQ. TR2 6DJ8 ECC88 E88CC Tube Buffer Pre-amplifier Preamp For DAC CD Player Audio Good choice for modification of DAC / CD player or guitar amplifier etcAdd tube sound to audio system,Make it more musical&smooth Note:Options of "DIY kit without tube" is for DIY kit include PCB board/ resistor/ capacitors/tube socket, No tube included. At -3dB we have THD+N at 0. A small selection of ECC85 and ECC88 preamp tubes. 94. 00: AB Aug 08, 2019: 4 : FOR SALE: Mullard ECC88 Wrinkle Glass tubes (Can be used in place of 6DJ8, 7DJ8, E88CC, 6922, 7308) Vacuum Tubes - Valves: $400. Cheap Amplifier, Buy Directly from China Suppliers:TR2 6DJ8 ECC88 E88CC 6922 Tube Buffer Pre-amplifier Preamp For DAC CD Player JuitarBOX Audio Source,+-Power Supply Good Sounding Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return. It has premium features such as low noise, low microphonics, and usually a longer lifespan. c-j preamps used to be really hard on tubes. BRIMAR 6060/12AT7/ECC81 RARE YELLOW-T PAIRS. 0 Reviews (0 Reviews) Product Price $ 109. This circuit is under:, audio, vacuum tubes, Tube Preamplifier with ECC88 l7548 A very good circuit of pre-preamplifier, for amplification of signals from heads of Moving Coil. . Schematic sent by Yoon Hyung Chul (Korea) . PS Audio BHK Signature Preamp for sale. (*)These specifications are provided 'as-is', with no warranty of any kind. Siemens CCA - SGD 250/pair Tested at NOS range Came in original Siemens box Tube print almost gone due to age 3. The 12AX7/ECC83 is a high-gain (Av~=100) tube/valve, where the 12AU7/ECC82 is a medium-gain (Av~=17-20) tube/valve. : Pre-Amplifier - CD Players Tube/Itergrated Amplifiers Vacuum Tube Audio Cables Power Flter Socket Headphone Amplifiers Speakers USB DAC Decoder Pre-Amplifier Audio Rack HiFi Shanling Auido CD player, Hifi E&T Audio Rack, ToneWinner HDCD Player, JungSon Audio CD player&Speakers, Xindak Cables & Amplifier, Opera Audio Consonance CD player, Bewitch vacuum tube Amplifier, G&W power filter socket Site managed by Wathen audiophile. Selected for perfect balanced audio output and lowest noise. This preamp trounces a lot of the newer stuff. Because of this, we we run the LDR3000T tube at a low “slack” voltage of only 45 volts instead of 250 or even higher. 07. A large volume potentiometer sits in the center of the front panel allowing independent adjustment of each of the two channels. For more information on 6922 / E88CC / 6DJ8 vacuum tubes including pinouts, ratings, application and possible substitutions visit 6922 in Wikipedia, 6922 in Duncan Amps, and 6922 in The Tube Directory. CJ ET5 TO BUY E88CC=6922 Philips Holland D getter hours) - Golden Tube Audio SEP-1 preamp - CJ ET3 SE TO BUY E88CC=6922 Amperex 1960-1975  Hi, I have built all ECC88 Aikido preamp. It brings exceptional acoustic. Premium quality 6DJ8 variant that has a 10,000 heater and incredible inner resolution and detail. Single 6DJ8 (ECC88) Line Preamp. Wb Siemens PCC88 is everything you were hoping for in the ECC88 or 6922 alternative: long heater life, high performance, and a price tag much lower than a 6922! Select 1 FOR A PAIR or select 2 FOR A QUAD! These are the cream-of-the-crop of the Siemens & Halske Western Germany LOW NOISE PCC88 TUBES! Telefunken ECC88/6922 made in the 1960's. It isn't. Feb 7, 2018 Being a NOS tube, we couldn't ship the preamp with those. PCB Tube Phono Preamplifier RIAA ECC88, 81, 82, 83. Added to the very successful Gold Lion series of tubes, this one will surely be a winner too. ECC81 / ECC82 / ECC83 / ECC88 / 12AT7 / 12AU7 / 12AX7 / ECC88 / 6N1P and so on. 6DJ8 is a twin triode tube developed as RF low noise amplifier in 1958. Sold for datasheet , Ufk max razdelnik napona sa Ub , propusti 1mA kroz njega , neka srednja tacka bude na recimo 70V tako ce katoda prve triode biti ispod tog potencijala za toliko , dok ce druge biti nekih 50V iznad = taman da se izbegne diode efekat Sound is mid range focused and very slightly forward with certain tubes. Is it worthy? What differences in sound should I expect? 6922/E88CC Russia/Sovtek Very popular 6922, used by many OEM's. Da li koristiš PCC88 ili ECC88, o tome ti ovisi da li trebaš imati 6. Gold Lion  May 24, 2019- This Pin was discovered by 瞬智 陳. £7. If you hear a rattle or ghost notes on certain lower notes you likely have a microphonic power tube. Of course before calculating the RIAA equalization network I needed to set the operating conditions of the two gain stages. Minimalist audiophile circuit using the legendary 2sk170 JFET Passive (no feedback) RIAA equalization ~40dB gain Russian K40Y and K42Y paper in oil coupling capacitors Nichicon Muse filter capacitors Vishay/Dale CMF6 can i use a ECC82 tube in a ECC83 preamp ? The ECC82 can handle higher voltages as a ECC83. 6DJ8 Substitutes. Output tubes can also be microphonic. One of the ECC88 types is new production from JJ, Slovakia. 3V(ili 7V) ubodi cijev i izmjeri pad napona na otpornicima R1 i R2,tako ćeš vidjeti da li cijev uopće vuče neku struju. Buy your E88cc 6922 6dj8 Ecc88 on the internet. Da li ovaj preamp šalje jak pucanj u snagaš pa je potrebno da se to odseca? Čim viktor postavi fajlove krećem u gradnju ovog ECC88 preampa jer imam lampu na lageru. E88cc Philips . These have the ultra wide bandwidth of the Telefunken ECC83, but also have nice matched internal triodes, gold pins, and have been carefully factory screened for low noise. Textronics and others used them in oscilloscopes and other high performance test equipment. As above. -PSU: symmetrical regulate ecc88 相同 : 6dj8 = 6n23p = cv2492 = cv5358 替代 : e88cc = 6922 = cca、e188cc = 7308、e288cc = 8223 買真空管前級,如果不是 12ax7,大概就是 ecc88 了。 雖然就音色之嬌豔,實比不上 12ax7, 但優點是較中性,且噪訊 "通常" 也較低。 The circuit topology uses an input transformer, followed by a 6922/6DJ8/ECC88 cascode stage. Switches S1-2 make adaptation of entry in the impedance, of expense of head. E88cc Philips Gold Pins Matched Octet 8 Tubes Ecc88 6dj8 6922 Heerlen Same Code. 00 PER PAIR. Buy 6n1p 6dj8 Ecc88 7308 6922 from eBay and save. The -20dB result is more important however. Pair NOS Philips MINIWATT ECC189 sim 6DJ8 6922 E188CC 0 results. The SRPP circuit  Purchase 6922 / E88CC vacuum tubes online, in stock and ready to ship! Find reviews, data sheets and specs to help upgrade your tube amplifier and preamp. The Firebird preamplifier offers natural sound with a wide range of editing possibilities through the use of various tubes. 6DJ8/6922 tubes have very high conductance which makes them ideal for small signal amplification in audio and recording equipments. Which means it can't drive really long cable runs. Fabulous original ECC88/6922/6dj8 type tubes. Amperex ECC88(gray plates big getter, gray plates small getter, shiny/gray getter, dimpled & shiny getter and A-frame), Mullard ECC88(old BVA logo, gray plates), Telefunken ECC88, Siemens ECC88 (gray plates), Radiotechnique (gray plates). For a one-tube solution the Tesla ECC88’s are an easy choice, however they’re about double (still not bad considering they’re NOS) what the plain-pin JJ E88CC’s cost. Bold designators are close or identical, Italic designators are different ratings, different pinouts or different filament voltages. This Jewel makes an unbelievable upgrade to any recording console pre or post conditioner. Several of my other components are much more expensive than the Sunfire, but I wouldn't exchange it for anything. Preamplifier Triodes. Russian audiophile high-quality double triode 6N1P-EV. Hi All! What is the purpose diode 1N4007 in this connection? Is the schematic for preamp is I came upon a gang of old test and measurement equipment loaded with ECC88's. bunch of pre amplifier has too much gain so very difficult to drive to. Both sections are biased at 175V anode voltage, -2V grid, 6mA anode current. Copy of manual included. Buy Pair of JJ E88CC/6922 Gold Pin Preamp Vacuum Tube: Parts - Amazon. Find many great new & used options and get the best deals for Rare Telefunken PCC88 7DJ8 Labormuster Tube - 7v ECC88 6DJ8 - preamp mic vocals at the best online prices at eBay! For sale 5 Vintage Amperex Bugle Boy ECC88 6DJ8 Pre amplifier tubes These are Heerlen Factory Holland coded tubes Tubes tested on a Jackson 648s tester and no shorts or gas detected Tube 1 tested 108-109 Tube 2 tested 110-110 Tube 3 tested 110-110 Tube 4 tested 110-110 Tube 5 tested 110-110 So as you can see all strong testing and closely balanced halves Education. These are Dodd 120wpc monoblocks in curly maple with matching battery powered tube preamp with remote. The others are all NOS types. 1 x Brimar ECC88 valve. The E88CC is a substitute for the 6922. $59. The circuit operates simultaneously with an existing phono circuit which is used during the manufacturing and playback used on vinyl records for frequency response and highest quality restoration of signals. If the amp starts squealing then the tube in socket 1 (V1) is bad. BUT is this danger for my preamp? Telefunken E88CC,Amperex 6DJ8(ECC88),Tesla E88CC Telefunken E88CC diamond bottom gold pins,6922/E88CC is a premium grade version on 6DJ8 with gold plated pins,made in ULM Germany Amperex 6DJ8(ECC88) buglle boy,very clean bass,smooth midrange and pristine top sound,one of the best in 6DJ8 family,Made in Holland A small selection of ECC85 and ECC88 preamp tubes. ECC88 = 6DJ8, 6922, 7308 -- dual-triode preamp, indeed used in hi-fi. 3 volt only heaters and an internal screen. The integrated preamplifier LM-512CA operates with 3 pairs of tubes. Related link: Shop 6DJ8 / ECC88 / 6922 Tubes In high gain application like phono or preamp, microphonics and noise is critical. Special custom tube line buffer for Mr MR, Bekasi, Indonesia. However there is an important difference, a 1k "stopper" resistor is added at each grid input. The range was horrible. Mini pre amplifier 2 input Music Reference Rm-5 Tube Preamp Pre-amplifier 6dj8 6922 Tubes. Price for each damper The Cool Damper is a radical new device. Made in USSR by  Suitable for all E88CC, ECC88, 6DJ8 and 6922 applications. Minimalist audiophile circuit using the legendary 2sk170 JFET Passive (no feedback) RIAA equalization ~40dB gain Russian K40Y and K42Y paper in oil coupling capacitors Nichicon Muse filter capacitors Vishay/Dale CMF6 TESLA NOS ECC88 - 6DJ8 Gray Shield Audio Triode Preamp Tube < loc tu-2> - $19. The 6N1P has similar ratings to the 6DJ8 and in the past was sometimes rebranded as such, however differences between the two types Warning: Substitutes are given as a guide only - please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. These Beautiful PHILIPS-AMPEREX HOLLAND tubes are RARE out-of-production and were Made in Heerlen, Holland in 1967. At just about a quarter of the price of our revered Steelhead preamplifier, the Chinook's focus is on elegance of design, careful execution, efficient construction, and appreciable quality. First of all is the distortion. Sound is very robust and clean, especially the bottom end. Home About Us Reviews Wathen CryoTone™ Tubes These are Dodd 120wpc monoblocks in curly maple with matching battery powered tube preamp with remote. 95. The remote control for a tube preamp is a wonderful addition. 031%(A) – almost solid state like performance. but some odd old person said need high cut filter. Provide your own chassis, power supply, and connectors. » Vacuum tubes by use » PREAMP / DRIVER tubes » 6N23P / E88CC / 6DJ8 Voskhod tube: 6N23P / E88CC / 6DJ8 Voskhod tube 6N1P / 6DJ8 / ECC88 / 6922 Orel tube Replacement of tubes is only possible on the equivalent of a given type of lamp used in preamp – 6922 EHG (ECC88), 12AU7 EHG (ECC82), 6H30Pi (6N6P). ECC88 / E88CC / E188CC / 6922 1. IDEAL FOR PHONO STAGES. this line amplifier has only few dB gain. 6922/ E88CC Tesla/JJ. It has a 6. The preamp tube to be tested goes in tube socket 1, closest to the input jack. These came with JJ EL-34 but now have JJ KT-77 and GE 7044 tubes in them. amperex. ECC88 Tungsram without boxes . power stereo 20w hifi amp protect 50pcs lemon power bass sound bar 8ohm amplifier ecc88 tube ambit cable jack xlr This product belongs to Home , and you can find similar products at All Categories , Consumer Electronics , Home Audio & Video , Amplifier . A very good circuit of pre-preamplifier, for amplification of signals from heads of Moving Coil. All output tubes valves are priced individually. The ECC85s were made by Röhrenwerk Neuhaus, Germany - probably in the 70's. High reliability, long life non less 5000 hours. Diamonds in the base between the pins show they are the real thing. These E188CC 7308 tubes were made in Heerlen Holland and are one of the best sounding 7308 you can find. A friend of mine has a BAT preamp and uses 4 National 6DJ8/ECC88 tubes… replaced by 2 Amperex 6922 PQ and 2 Philips 6922 SQ Gold pins (tubes are identical in sound)…the difference was notorious for much better sound quality and you do not have to be an “expert” just have ears… 6DJ8 / ECC88 / 6922 / 6N1P tubes. If you're expecting to run 35' RCA cables to your power amp, Sys isn't going to be the best option. Shop our great selection of vintage and new production 6DJ8/6922/7308 vacuum tubes. Tesla NOS ECC88 - 6DJ8 - 6922 Gray Shield Audio Triode Preamp Tube < loc tu-2> Identical toECC88 =6DJ8 = CV5358 = M3624Similar TubesOther class quality (otherwise equal):CV2492, CV2493, E88CCHeater different: PCC88Successor Tubes : 6922BaseNoval, B9AWas used byRadio/TV-reception etc. 23) Posted by RJ on 2002-02-28, 16:10:55 (142. 6n1p 6dj8 Ecc88 7308 6922 On Sale. WESTERN ELECTRIC VACUUM Tube Amp / Preamp Socket El 84 12Ax7 Ecc88 - $34. With Tesla ECC88 in line section. The input signal is applied to the gate of an n-channel FET, the drain of which is connected in a classic cascade manner to the grid of half of a 6dJ8 (ECC88) dual triode, biased by a resistive divider. Schematic sent by Yoon Hyung Chul (Korea). My friend has an ARC SP9 pre, and he just purchased some Electro-Harmonex and he really likes them a lot. Description: Tubed stereo preamplifier. Shipped with USPS First Class Package. Both are stunning and I use the gold pin 6922 from Upscale Audio in my Conrad Johnson ET250S amplifier with excellent results for its great bass, dynamics and warmer sound through the mid treble in that amplifier. Line Preamplifier. Every product will be tested before we  Here's the circuit schematic of the PHAB microphone preamplifier: an EF86 pentode valve followed by an ECC88 dual triode "strapped" as a single, high-mu   (If you are not familiar, the preamp uses a single 6922). They came from a Ham Radio Operator's Collection. Because of the CCS and proper (star) grounding and PCB routing the board is able to achieve some impressive results. In my research for a very quiet phono input/head amp tube I found it to be the best choice due to it's linearity and high transconductance. Preamp with ECC88 (6922, 6DJ7) by Thunder » Sun Dec 02, 2012 4:09 am . In a nutshell, the cascode circuit offers two huge features: gain, mullardtubes. 6DJ8: The 6DJ8 is also called the ECC88 in Europe. GE grey plate - 3 mica spacer version: A bit less refined than other 5751s, this is the entry level tube of this type. At the same time all the circuit using the United States AB Carbon resistor, save a strong flavor, the dynamic was greatly improved, soft and soft voice, female natural charm of the magnetic charm. ECC83 mini pre amplifier Pre Phono Amplifier has 3 position of curve for LP 0 dB out put ,same circuit without tone and line in. and put out 2-3 dB Bass boost and less than 6dB of high cut simple filter. For tubes noval 9pin: ECC88, 81, 82, 83 Project based on: (ECC88, 6DJ8, 6922)  TR2 tube buffer is based on 6N11 dual triode tube,6N11 have a bulk subsitution include 6DJ8/6922/ECC88/E88CC/CCA,It is very musical tube with excellent  Sep 16, 2016 This is a quick entry to demonstrate a simple topology used in this ECC88 preamplifier. EAT COOL TUBE DAMPER. Vacuum Tube Warranty & Return Policy Amperex 6DJ8 / ECC88 Bugle Boy Tube Depot carries a selection of 6DJ8 / 6922 / ECC88 / E88CC / CV2492 Pre Amp Vacuum Tubes. . Compare prices and shop new and used Blue Robbie Mic Preamps on Reverb. The fully discrete ECC88 twin triode tube input and gain stage deliver warm, rich and detailed tone—while the electronically balanced solid-state output ensures pristine sound with unmatched clarity. In order to allow this direct coupled circuit, the wire feeding the LCR EQ Module via the 680 Ohm resistor is soldered on the PCB to the connection for the omitted C109, nearest to the edge of the PCB that contains the audio connections. Our Volume control will not degrade with time, corrode, get noisy, loose surface contact or mis-track. Audio Research SP-9 MKI Stereo Tube Preamp with phono Silver face! With Tesla ECC88 in line section. 166. The Telefunken's (6922/Ecc88) sound the best to me, followed by the Siemens 6922. NOS. This 1k resistor is required to avoid parasitic oscillation. the Blue Robbie microphone preamp is a single-channel class-A tube mic pre has a transformerless I/O for ultra-quiet sound. It is detailed and very dynamic, esp with these custom mods but lacks the ultimate wide bandwidth, bottom end weight, big full sound and slam of some other pre-amps I have heard. Input impedance: 47k ohms. 6DJ8 / ECC88 Tube RIAA Phono Preamp. This means they will not be suitable for use in a preamp, phonostage, the input stage of a power amp, or any circuit that is sensitive to noise or microphonics. 00 datasheet , Ufk max razdelnik napona sa Ub , propusti 1mA kroz njega , neka srednja tacka bude na recimo 70V tako ce katoda prve triode biti ispod tog potencijala za toliko , dok ce druge biti nekih 50V iznad = taman da se izbegne diode efekat The 6N1P ( Russian: 6н1п) is a Russian -made miniature 9-pin medium gain double triode vacuum tube intended for use as a line audio amplifier and cathode driver. The pictures show the quality of these item. Ripple reduction based active filter with high-voltage transistor + CRC filter - 220R/470uF The circuit psu has a resistor divider for lifting the tube filament voltage so that the voltage difference between the cathode and the filament was smaller - which increases the life of the tubes in the system SRPP. NOS TELEFUNKEN PCC88 for 6DJ8 6922 ECC88 AUDIO PREAMP + Pricing & History. 2-Tubes included. The feedback has two settings, giving two gain selections. Our volume control can switch 5 inputs (analog) and 3 inputs in digital domain (DAC ) and it can trigger up to 3 external relays and it can have alphanumeric user-programmable descriptors of inputs and outputs. Parallel 6DJ8 (ECC88) Line Preamp Line amp section of the Curcio Daniel 1 preamp published in The Audio Amateur (85'). The valves must be dual triodes of the popular pin-compatible type, e. 169: 6DJ8 tube ID help needed (5. Dynaco Pas 2 Preamp Schematic BTW I own a "legendary" Dynaco PAS-2 tube preamp with magnetic phone, it has one advantage over the RA88a op amp mixer on MM cartridge using speakers. TR2 6DJ8 ECC88 E88CC Tube Buffer Pre-amplifier Preamp For DAC CD Player Audio - $11. 3v 365mA heater filament, with an isolation shield between the two triodes, connected externally to pin 9 Audio Matiere or Audio Sculpture designed the Paraphrase as a reference preamplifier. If you've ever heard the linestage of a CJ preamp made in the 1980s you've heard this tube since that's what CJ used in the line section of all their preamps for years. Microphonics and Noise. 5dB (phono and line). ECC88 / E88CC / 6922 Dual Triode The ECC88 or 6922 is a miniature 9-pin medium gain (33mu) dual triode tube. The 6922 is used worldwide from demanding HiFi amplifier manufacturers seeking for highest 12AU7 + 6DJ8 tube preamp board: imitation British ROTEL WCF tube preamp line, classic mature line dual channel amplification, the circuit is mature, excellent performance, reasonable line design, very small communication sound, full of daring. They don't come cheap though assuming that you can find one. The reason for this is that preamp tubes are effectively the voice of the amp, Tube ECC88 for two levels of negative amplification, so that the sound is more active. They are low usage tubes in excellent condition and test strong. 6922 and its European equivalent E88CC are premium versions of the 6DJ8. So they dont drive so hard as a 83 at the same gain. Sturmey. So this is not an inexpensive preamp the input transformer alone sells for $135! The output uses another ECC88, in SRPP, with some feedback around it. £5 1 x Mullard yellow label ECC88 valve. This Jewel makes an unbelievable upgrade to any recording console pre- or post-conditioner. The ECC803S is a very low noise, special quality 12AX7, made with the old-style Telefunken German precision. Discover (and save!) your own Pins on Pinterest. I picked up an old US Navy oscilloscope a couple of years ago that was chock-full of Amperex 7308s, a number of which I have sold on Reverb since, with each one selling for more than I paid for the entire lot, even though they were used (these are rated for 10,000 hours of use). tube ECC88 for two common negative amplification, compared with ECC83, ECC81 for two negative amplification when the total negative low, so that the sound is more active. This board will feed the onboard regs on the ECC88 preamp. The Groovewatt RIAA phono preamp uses four tubes and a Total gain of the phono preamp is about 45 dB. If you're running 6' cables to desktop speakers, that's not a problem. Find many great new & used options and get the best deals for Telefunken ECC88/6DJ8 preamp Tube, Diamond Base, Low Noise, NOS NIB at the best online prices at eBay! The product {product} was successfully added into your cart. ecc88 / e88cc / e188cc / 6922 1. Grading and Matching. Part 2: New preamplifier designs. While at high frequency the RIAA stages have low gain, it is the front end that limits the output swing, and the limitation is in the ability of the opamp to drive the low impedance feedback network. THESE HIGH QUALITY TUBES HAVE BEEN PULLED FROM MEDICAL TEST EQUIPMENT. shop will in no way be held responsible (financially or otherwise) for any damage caused by the misuse of tubes sold by us. FilamentVf 6. siemens cca ecc88 6dj8 6DJ8を使う機器は結構あって、手持ちではAH!のCD, Audio Analogue Rossini, OCTAVE V40SEに搭載されてる。 AH!はもともとはPhilipsの高信頼管で、おまけの復刻Mullardがさっぱりダメだったので、TESLAのECC88に交換してある。 The downside to a passive preamp is exactly that—it's passive. I will be posting the results of my tube rolling using combination of my tube stocks. I roll the guitar’s volume knob up from zero to 10 while playing a note. I tried E88CCs in both positions and felt it didn't provide enough gain. preamp tubes / ecc88-6dj8-pcc88 / amperex / accessories & parts new. Hi All! What is the purpose diode 1N4007 in this connection? Is the schematic for preamp is But I have to mention, that the Sunfire classic tube preamp is a good sounding amplifier, a bit on the warm and more gentle side (while still details and wide soundstage were maintained), it just does not offer the absolute detail and transparency a very good 300B design can deliver, which I just cannot miss, once used to. SgtWookie Expert. Thousands of always tested, matched & guaranteed tubes. This setup gives about 28 of voltage gain using a 20K anode resistor. riaa phono preamp schematic, riaa phono preamplifier, riaa phono preamp circuit, riaa. It has a balanced XLR, 3 RCA inputs and also RCA and XLR outputs. Aesthetix Calypso tube preamp …both use two 6922 tube types… Current production Sovtec tubes currently used by several tube preamp 5- ECC88/6DJ8 AMPEREX BUGLE BOY, HOLLAND, SHIELD WITH RING GETTER. The SRPP circuit has also been referred to as a SEPP, Totem Pole, Mu Follower, Mu amplifier and Cascoded Cathode Follower. In fact the most common preamp tubes are neither of these but rather the 12AX7 (also called ECC82) followed the 12AU7 (also called ECC81) with the 6922 third after them. The circuit enters in line with existing circuit PHONO. Radio tubes are valves. The ECC88-WC is more articulate, musical and has the lowest noise floor you’ll find in a ECC88/6922 tube. While rectifier and power tubes are often left out of hybrid models, any amp that's not entirely solid-state ought to have a preamp tube. solid-state debate by combining the best aspects of each into one premium preamp. The preamp is built on the basis of two fully reinforced modules separated from each other. 6922/E88CC are drop-in compatible high reliability version of 6DJ8. Telefunken ECC88/6922 made in the 1960's. This single-channel class-A tube mic pre has a transformerless I/O for ultra-quiet sound, and boasts an ECC88 twin triode at the tube gain stage. Warning: Substitutes are given as a guide only - please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. 1 x Zaerix E88CC - 6922 - CCa - ECC88 Preamp Dual Triode Vacuum Audio Tube. Frequency Response: 20Hz-20kHz, ±0. They don’t have the gain needed for moving coil (MC), or the flexibility for high-output MM cartridges like Decca, or high-output MC cartridges that that might end up somewhere in the middle of the gain range. In this solution, two electron tubes ECC88 Gold Lion work in each channel, and in the whole device – four Type: tube, class A, triode, Dual Mono The DIY version of the GrooveWatt tube RIAA phonograph preampamplifier. Those stages are identical. 3V ili 7V napona grijanja. In photos example fully  Cheap Amplifier, Buy Directly from China Suppliers:TR2 6DJ8 ECC88 E88CC 6922 Tube Buffer Pre-amplifier Preamp For DAC CD Player JuitarBOX Audio  PCB - Tube pramp RIAA or line CCDA stage. We offer a 3 months warranty from shipment date. ECC88 page sheet date 1 1 1958. In the past, I have always preferred to work with the 12AU7/6SN7 signal tubes (very similar anyway) for preamp circuits. Telefunken ECC88/6DJ8 preamp Tube, Diamond Base, Very Low Noise, Perfect Logo 10 product ratings - Matched Pair Telefunken 6DJ8/ECC88 Germany Diamond Bottom Same Amperex 7308 E188CC Holland. Bought mistakenly by me just a few weeks ago, but can't be arsed sending it back because of expensive shipping costs back to the US. The 12 AX7 was reportedly specifically made for audio. Focusing on e88cc 6922 6dj8 ecc88 on the internet. I got the external power supply for the ECC88 preamp done today. Call and Save. If you want the best, these tubes are the way to go! The 6DJ8/6922 (µ = 33) appeared in the late 1960's designed for use in color TV tuners. WESTERN ELECTRIC VACUUM TUBE AMP / PREAMP SOCKET EL 84 12AX7 ECC88. 50 1 x Amperex 'Bugle Boy' ECC88 / 6DJ8. Real PCC88 are drop in replacements for ECC88/6DJ8/E88CC with a slightly higher heater specification of 7 volts producing a much longer life and lower noise threshold when used in place of ECC88/6DJ8. Watford Valves keeps a huge inventory of new old stock tubes valves as well as current production items. The mechanism by which NFB wrecks your sound Negative feedback at first acquaintance sounds good enough to take to bed and cuddle. I have pulled 6 siemens ECC88 tubes out of a conrad-johnson preamp and I'm wondering if these have any application in guitar amps? If not I'll just toss 'em or maybe they're worth trying to put up on ebay. Robbie puts an end to the tube vs. Home · Preamp Tubes · Driver Tubes · Power Tubes/Rectifiers · EMISSION LABS (EML) · GOLD LION & TUNGSOL Tubes · MICROPHONE TUBES · GUITAR  1set ECC88/6922/6DJ8 6N11 tube buffer preamp for MUSICAL FIDELITY X10d PCB assemble kits,it's solder finished. Made in USSR by ORZJEP factory (Orel city). Today I swapped tubes. TEST STRONG. Price is $2,800 plus shipping for everything. ECC86 or ECC88 preamp for car use Discussion in ' Headphone Amps (full-size) ' started by ryssen , Jul 20, 2006 . New & NOS tubes from Electro-Harmonix & other brands! ECC88 Preamplifier / buffer. It seems like the  Jun 22, 2007 This is one of many possible variations for a Symmetrical SRPP Preamplifier based around the 6DJ8 / ECC88 family of tubes. II preamplifier with Tube ECC 88 or Röhre ECC88 ID2488, Double Triode, Noval, B9A and UHF shown. Due to high conductance requirements, 6DJ8/6922 type tubes require special construction (called 'frame grid'). This is essentially the base model, time-tested, reliable, inexpensive and plentiful. It was very microphonic, unless you selected two out of ten tubes. All selected and tested on the Amplitrex AT1000. I tried various tubes and the best two were an Amperex 6922 and Siemens 6922 (Ecc88). Preamp is very holographic and musical timbre is stunning. These sockets are like new and have never been used. 01. The preamp clips at 20mV input, for a gain of 60dB @1KHz - 50uV output harmonic noise (mostly 60Hz and 20dB less 3rd harmonic at 180Hz), the equivalent of 5nV harmonic noise voltage at input. Wathen CryoTone Tubes ECC88-WC Preamp Tube. I am using a Siemens ECC88 6DJ8. The 6DJ8 has a max voltage of 120-130 volts. 6DJ8 TELEFUNKEN WEST GERMANY (smooth and realistic highs, lots of air and depth with excellent imaging, bass is not boomy) (highly recommended if you want a very musical 6DJ8) (very popular 6DJ8 due to superb overall sound) - Aesthetix preamp - DECWARE CSP2+ - Lampizator Level 4 Gen 4 DAC TO BUY 6DJ8 TELEFUNKEN (recommended) I sell all kinds of pre amplifies tubes like 5755, ECC83, ECC82, ECC81, 6N2P-EV, 6N1P-EV, EF86, 6922, ECC88, 6DJ8, 6N3P-EV and also 5670 or ECC84 and WE310A. 91. 6DJ8 tube was designed as a broad band RF amplifier tube for communication equipments and TV sets. All our preamp tubes are stringently tested for noise and microphonics using Amplitrex testers  Nov 27, 2016 The 6DJ8 and the European equivalent ECC88 were introduced to North the 6922, E88CC, 7308, E188CC and a few others of CV designation as well. 'frame grid'). NEW IN BOX GE 6DJ8 ECC88 Preamp Tube Guaranteed Quality Unused General Electric Fixed Price $ 22. » Vacuum tubes by use » PREAMP / DRIVER tubes » 6N23P / E88CC / 6DJ8 Voskhod tube: 6N23P / E88CC / 6DJ8 Voskhod tube 6N1P / 6DJ8 / ECC88 / 6922 Orel tube NOS TELEFUNKEN PCC88 for 6DJ8 6922 ECC88 AUDIO PREAMP + Pricing & History. Russian quality double triode 6N1P. -Signal tubes: 1x 6DJ8 Philips (fam: ECC88, 6922, E88CC, CCa, 6h1n). My local retailer, whose opinion I value, strongly believes that 12AX7 tube is superior, which is used in the Aesthetix IO and in the less expensive EAR phono preamp, 834 P. First stage is a 12AX7. Get the datasheet here , and find more informaton on the E88CC here . NE555 ukljucuje relej koji drzi izlaz preampa kratko spojen na masu dok se ne uspostavi radni rezim, pri ukljucenju releja kontakti se odspajaju od mase. 3 Volts / If 0 Amperex 6DJ8(ECC88) buglle boy,very clean bass,smooth midrange and pristine top sound,one of the best in 6DJ8 family,Made in Holland Tesla E88CC gold pin version USD $18400 without remote for Einstein Audio Components The Tube Mk. 5 dB and the wide band signal-to-noise is at -84 dB. Details about 1 x Zaerix E88CC - 6922 - CCa - ECC88 Preamp Dual Triode Vacuum Audio Tube. 6DJ8 (ECC88) Tube Headphone Amplifier - Finished The frequency response at the 50 mW level is from 20 Hz to 28 kHz within 0. I replaced the original NOS 6N11 tube with an early 1960's Amperex 6DJ8/ECC88 tube made in Holland with the white lettering (non A Frame version). Matched Pair of used Amperex PQ 6DJ8/ECC88 Preamp Tubes. Weight Audio Research SP9 preamplifier. You may also like Aikido Cascode The Aikido Cascode amplifier is a compound circuit consisting of a cascode input stage amplifier and an Aikido cathode follower output stage buffer. BTW, I just did a bunch of tests on my TV7 of all the E88s I had (several brands and quality levels). Tube (6922/ECC88/6DJ8) Phono / Turntable Preamp A short video of a Tube Phono Preamp that I built. The balance controls are particularly well executed, and take nothing away from the music, but give you ultimate control of the balance between bass and treble. Find many great new & used options and get the best deals for Telefunken ECC88/6DJ8 preamp Tube, Diamond Base, Low Noise, NOS NIB at the best online prices at eBay! DIY Universal PCB for tube preamp CCDA stage ECC88 81 82 83 6N2P 6N6P. Ithought aobut changing first tube to 6SN7. The Directly Heated Triode (DHT) tubes can be very good , and suit those after a slightly more euphonic sound, but do need some serious engineering to get the best out of them. I hit the jackpot with ECC88's, and 6L6GC's. 01 3 3 1958. All our tubes are computer tested at the highest standards. I can't figure it out--$10,000 or more for a preamp, and a $29. (*I would add a DC coupled ACF to this phono Find many great new & used options and get the best deals for Rare Telefunken PCC88 7DJ8 Labormuster Tube - 7v ECC88 6DJ8 - preamp mic vocals at the best online prices at eBay! FOR SALE: NOS 6DJ8 ECC88 Raytheon MATCHED PAIR: Vacuum Tubes - Valves: $42. The circuit topology uses an input transformer, followed by a 6922/6DJ8/ECC88 cascode stage. Pin-9 of each valve socket has its own test pad so it can be left floating or be connected to ground, depending on the valve type chosen -see the component flow chart. Offer contain: Bare PCB + circuit diagram. Jul 20, 2006 at 8:53 PM THREAD STARTER Preamp Tubes 12AX7 12AU7 12AT7 ECC81 ECC82 ECC83 E88CC 6922 6SN7 EF86 12BH7 Melbourne Australia. Electrical measurements wise, it is distinguished by its very high transconductance mostly the result of its frame grid construction. Below is our current selection of 6922 / E88CC / 6DJ8 audio tubes. 00: ON Aug 05, 2019: 5 : FOR SALE: JJ Electronics (Slovak) preamp tubes 6dj8 aka ecc88 Quad or pair The $200. mullard A very good circuit of pre-preamplifier, for amplification of signals from heads of Moving Coil. I would like to sell everything together. I tried it and it works fine. I do'nt think need high cut filter. dqx500 - 1000 micro seiki feet ecc88-6dj8-pcc88 amperex view all brands. Preamp Tubes (16 matches found) Preamp tubes are also the most common, since they do the heavy lifting of tone generation. I have been satisfied with the results and in this webpage, I describe my simple preamplifier based on vacuum tubes, equipped with a RIAA phono stage for moving magnet (MM) cartridges. Inputs: 5, including phono. At Tonal Tubes we sell power, preamp, and rectifier tubes for your guitar or Hi-Fi amplifiers! Matched and tested to work when it arrives. Back to Top. Wolfbane. "only Phono" mini pre driver for 300B SE Amplifier this pre mini amplifier has RIAA and tone control for CD. In this part we present some modifications to the PAS, designed with the help of SPICE, that solve the problems in the original design, and we go beyond mere modifications to present some remarkable high-end designs. 07 6 C 1957. All preamp tubes are microphonic it's just a matter of where the threshold is and longer plate tubes will squeal before a short plate tube will, so for real high gain amps we would stay with the ECC83S or better yet the graded high gain ECC83S's that we hand pick for high gain amps. Bought NOS a few years ago. We described the Dynaco PAS preamplfier-- its circuit and performance. DIY Tube Preamplifier SRPP ECC88 E88CC 6N2P + PSU. ECC88-Based Hampton Tube Preamplifier. European designation is ECC88. ECC is a european designation, hence Marshall, from England came with ECC-83 pre-amp tubes, while Fender [american] came with 12AX7's, same tube, different designation. Sylvania made a version that is JAN military spec without gold pins. Audio Research SP9 preamplifier. - Zero caps in the signal path (except for the optional cap at the preamp output). The 6DJ8 is a dual triode preamp tube. Tim Paravicini (EAR) uses the 6922 in the 88PB Phono preamp and is used in the Manley Steelhead. Gross weight: : 3 kg. 4. Related link: Shop 6DJ8 / ECC88 / 6922 Tubes. 06. High End preamplifier with ECC88 or ECC82! and I need to ECC88 or ECC82? and to make the comparison that I create preamplifier?! thanks #6 Like Reply. AVAILABLE FOR $99. Tube complement: two 6DJ8/6922/7308 dual triodes (line stage), one each 6DJ8/ECC88, 12AX7A/ECC83, 12AU7A/ECC82 (phono stage), one 6X5WGT full-wave rectifier (power supply). The Telefunken is from 1967; the Siemens from 1972 +/-. Therefore Watford Valves can offer one stop shopping to satisfy the most demanding of needs of the professional market, the collector or the enthusiast. They are in perfect condition and will drive whatever speakers you hook up to them. com FREE DELIVERY possible on eligible purchases First of all, it is the same tube as the 6DJ8, and will work wherever a 6DJ8 is needed. 6dj8 Phono Preamp Schematic As detailed here, it is configured as a RIAA phono preamplifier for magnetic or ceramic. 07 7 FP 1999. 84. In the phono stage, the plate (anode) of this tube feeds a pair of MOSFETS for additional gain, followed, Lampizator Preamp. However there is an important difference, a 1k  Tube Depot carries a selection of 6DJ8 / 6922 / ECC88 / E88CC / CV2492 Pre Amp Vacuum Tubes. power amplifier. com sells mullard tubes NOS Mullard Tubes & That's It! NOS NIB Mullard Tubes No Reissues 12AX7 COMPARISONS ~ Best and Worst. Tube Preamplifier Circuit 6DJ8 / ECC88 SRPP This is one of abounding accessible variations for a Symmetrical SRPP Preamplifier based about the 6DJ8 / ECC88 ancestors of tubes. 90 days warranty on tubes! Russian quality double triode 6N1P. You can put a 6922 in a 6dj8 circuit but not the other way around. There is switch for adjusting the high-pass filter. Amperex Holland 6DJ8/ECC88 Silver Shield A Frame Tube 89/93% Rating Required Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Gold Lion ECC88/6922 Gold Pin is a newly released premium small signal vacuum tube from New Sensor. One disadvantage of using a flat fixed gain pre-preamp is that this stage defines the high frequency headroom. g. Sold for Make offer - Matched Pair JJ Gold Pin preamp tubes,E88CC,Best 6922 / 6DJ8 / ECC88, Brand NEW 4x 6N23P Tube with Silver Shield = ECC88 6922 E88CC 6DJ8 NOS Valve Quad £35. The 6922 has a max voltage of 220 volts. If you have Mullard or Phil . The sound stage and organic sound you’ve been missing is right here. It allows selecting different loads for the cartridge and it is based on two ECC83/12AX7A double triodes, with an output stage based on a ECC88/6DJ8 double triode. Designed by stereo24, Ships from Poland The ECC88 is the most natural sounding tube in the 6922 position I have ever heard. It is distinguished by its very high transconductance , mostly the result of its frame grid construction. That means there are no electronics in it. Site managed by Wathen audiophile. These are the early yellow decal T-logo that are excellent quality tubes. Subsequently I found Tungsram ECC88/6DJ8 and Tungsram 6922. TR2 6DJ8 ECC88 E88CC Tube Buffer Pre-amplifier Preamp For DAC CD Player Audio Good choice for modification of DAC / CD player or guitar amplifier etcAdd tube sound to audio system,Make it more musical&smooth Note:Options of "DIY kit without tube" is for DIY kit include PCB board/ resistor/ capacitors/tube E88CC 6922 7308 6DJ8 ECC88 CCa Siemens Telefunken Philips Brimar Mullard Amperex diamond bottom, golden pins, the best choice for audio D getter Amperex Holland 6DJ8/ECC88 Silver Shield A Frame Tube 89/93% Rating Required Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Products > Valves - ECC88. It's a simple C-R-C filter on both the heater supply and the B+ supply. 6SL7GT 6SL7GTB 5691 VT-229; 6SN7GT 6SN7GTB 5692 ECC35; Tubes ECC88 Tungsram, good audio tube. mullardtubes. Designed by Jean Jaques Van Leeuwen who is well known in the audio industry for very desirable components. The 6922 / 6DJ8 tube type is equivalent to the European ECC88 / E88CC tube and can be used in any 6922, 6DJ8 or ECC88 circuit. It isn't even as simple as a superficial acquaintance may suggest. We showcase a varied catalog of products ready to ship at competitive pricing. Without going into some of the more obscure tube types, I played with the 12xxx series, 6SN7/6SL7 types, 5687 and the 6922/6DJ8. To shop on time for 6n1p 6dj8 Ecc88 7308 6922, shop online for 6n1p 6dj8 Ecc88 7308 6922. It will be a post eventually. Compare Compare Now site1prodL19936. Triode, USA Customer Service M-F 9AM-4PM CT 1-800-774-3201 Preamp with ECC88 (6922, 6DJ7) by Thunder » Sun Dec 02, 2012 4:09 am . Preamp Tubes. Designed by stereo24, Ships from Poland. The Sovteks are a good robust tube, they are used by ARC in there amps and preamps on many models. Amperex 6DJ8 ECC88 PQ Preamp Tubes Matched Pair. I was astounded by the difference in the sound. The impedance of the circuit is adjusted by the use of switches S1 & S2 for the cost of the head. Audionote. Designed and built in California, the Chinook exemplifies Manley's commitment to our local community and to a simple, clean, and quiet signal path. 00 crappy sounding tube in the box. All were new tubes. By the way, the 6DJ8 (also know as ECC88) is very similar but not exactly identical to the 6922 (E88CC). These tubes have been cryo treated, given a 24 hour burn-in, verified and matched on the Maxi-Preamp Digital Tube Tester. 6DJ8 / ECC88 SRPP Tube Preamplifier Schematic This is one of many possible variations for a Symmetrical SRPP Preamplifier based around the 6DJ8 / ECC88 family of tubes. They both offer far better dynamics than the OEM EH tubes. Genalex - Gold Lion E88CC / 6922 Preamp Vacuum Tube  Universal PCB configuration with CCDA stage for tubes ECC88, 81, 82, 83, 6N2P , 6N6P. The design is almost the same as the 12AX7 preamp, it is a single gain stage triode tube with cathode follower. Vinyl Song LCR ECC88 Phono Stage Assembly Manual. 01 4 A 1957. amperex6dj8mp $59. com sells mullard tubes NOS Mullard Tubes & That's It! NOS NIB Mullard Tubes No Reissues Music Reference Rm-5 Tube Preamp Pre-amplifier 6dj8 6922 Tubes. Blog 247 covered the cascode circuit, so it's worth reading, if you haven't already. ECC88 is the European designation for this tube. The paraphrase is known for its ability to disappear in the audio chain and gush resolution. One way to confirm this is wear a glove to protect your skin from the heat and then gently hold the tube while you play the note that causing the rattle. Tesla ECC88 (Czech Republic) NOS. Without it, the 6922 would oscillate easily. 07 5 B 1957. Second owner, about 2 yrs old, Mint condition with light to moderate usage. Tube Nirvana will now be the seller of Tubes4HiFi's Dynaco PAS3 preamp upgrade the wiring against the schematic and a know good PAS, couldn't find the issue. 95 ECC88 = 6DJ8 = 6922. Power consumption of the headphone amplifier is approximately 20 Watts (W). Taking its name from Robbie the Robot of old-school sci-fi movie Forbidden Planet, the Blue Robbie microphone preamp is anything but antiquated in its functionality. ecc88 preamp

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