These tubes probably have the best clarity and frequency fidelity of any other preamp tube out there. I usually ran with a Tungsol in V1, and USA GE/Jan 5751's in V2 CBS 5751 12ax7 grey plate triple mica tube. With 30% reduced gain, the 5751 is a fantastic way to tame a distortion stage and tone shape an amp. Jan 21, 2013 · Black Plate triple Mica -military 5751 - same review as the non-military version however, this is a supreme quiet tube. In hi-fi preamps and CD players, the TAD selected 5751 will lower the noise floor and sound smoother and clearer than many 12AX7 tubes. We stock NOS and current production 5751 tubes. I've also previously rolled in NOS Siemens, Brimar, Sylvania and Mullard 12AX7's. No need for a bass-heavy tube as the amp delivers low-end in spades. This means that if you plug a 5751 into a socket that expects a 12AX7, the pre-amp will have about 30% less gain. Nov 21, 2022 · The interaction between the small, gain-forming preamp tubes and the larger power tubes is complex and helps define the amp’s voice. Stevie Ray Vaughn used these to change his front end distortion to back end distortion ratio to have more of the touch sensitive output tube distortion. distorts less), and the tone will be different. In my Fender Greta 2. Reduced cathode bypass capacitors on the preamp tube gain stages. The amp just seems a bit smoother and fuller with it compared to the stock 12AT7. JJ Electronic 5751 Maxi Preamp Tested. Replaced the 12ax7's in V1 V2 & the PIleaving the tubes Jerry put in the added clean channel and buffered loop 100% Guaranteed & Tested Tubes All tubes are tested for Gm, shorts, leaks, gas, and noise on one of our vintage, calibrated, or state of the art digital tube testers. JJ Electronic preamp audio tubes such as ECC83-S, ECC82-S, ECC803S, ECC802S, and more, are available with standard pins or gold plated pins. The RCA Command 5751 preamp tube is one of the best sounding & highly sought after preamp tubes out there, right up there with the Raytheon "Windmill" getter version. Bright and clear tone with great note definition, lots of harmonic content and wide soundstage. As well it offered more gain. 50 Shipping. bandcamp. 1 New Tung-Sol 5751 Gold Pin Preamp Tube. 5ma) Jan 4, 2019 · What is the Difference Between the 12AX7, 12AT7, and 12AU7 Preamp Tubes? Let’s take a look at the less glamorous, but equally important type of amplifier tube – the preamp tube. The 5751 was designed as a "ruggedized" high mu, dual triode tube with similar specifications as a 12AX7. Mar 10, 2016 · The 5751 is an affordable alternative to the 12AY7 used in original Fender tweed amps and can be subbed for a 12AT7 like a reverb driver tube. These tubes are the starting point for amplifying your sound. Here is a good demonstration about the different gain factors: Best 5751 Tube #1. This is one awesome tube, sounds a bit more colored and warm than the 801S, with nice clear highs. Jul 23, 2019 · With a gain factor of 70, a 5751 is a popular replacement for a 12AX7, as it reduces the gain of the first preamp stage by around 30 percent compared to a 12AX7, the typical V1 tube. Originally, the 12AX7 / ECC83 vacuum tube was introduced to be a superior option for lower noise and microphonics over the 6SL7 tube that was commonly used in the 1940s. Known by Hi-Fi audiophiles as "Holy Grail Tubes". Purchase JJ 5751 preamp vacuum tubes in stock and ready to ship! Find reviews, data sheets and specs to upgrade your tube amplifier. The JJ 5751 is a high quality, low noise tube built to classic 5751 specs. High gain and will keep the amp nice and open sounding. Let's assume it is the first preamp tube. Silkscreen on this has some wear, but very strong. 1969 GE 5751 JAN Mil-Spec Tube, Tested, NOS Jul 16, 2002 · As a bass player running these tubes in an Ampeg SVP-PRO preamp. ) May 24, 2021 · Definitely worth experimenting a fair bit and good NOS can pay off. Apr 7, 2009 · Re: 5751 tube in V1 I've used the 5751 in both V1 and the PI and it's really a matter of taste. I've done lots of tube rolling with these and my other tubes. Tube Depot carries a selection of 5751 Pre Amp Vacuum Tubes. I tend to prefer around 60% with shitloads of preamp gain. The highly sought after Sylvania Gold Brand 5751 3-Mica Gold Pin is simply one of the most musical tubes out there. Preamp Tube Gain Factor and Substitution Chart. This particular tube tested very strong, clean and crisp tone, very quiet. The JJ power output tubes like 6L6-GC , E34L/EL34 , 6V6-S , EL84 , 6CA7 , KT88 , KT77 , KT66 , 300B , 7027A , and 7591-S are all great performers. Feb 8, 2022 · I've been utilizing HQ 5751 preamps as my "secret weapon" to change the feel/touch-dynamics and tonality of many amps, many of which are considered "high gainers" for sure. The 5751 is about 25% lower in gain than a traditional 12AX7. But in these days of incredibly high gain levels on tube am This HIGHGRADE 5751 is a super low noise Tube for Best Clean Tone! Matching in Pairs for preamp tubes means that two tubes show identical gain, hence, There will still be plenty of gain - so if you own a high-gain preamp that does not have these classic crunch characteristics, the 5751 tube will work wonders. Performs great for hi-fi too! Replaces any 12AX7A/WA, ECC83, 7025 etc. I've seen Sylvanias and RCAs. The 5751 preamp tube is great for taming high gain guitar amps while vastly improving the clarity, smoothness, and vintage tone! They still have plenty of gain but if you have a high-gain preamp that does not have that classic crunch characteristic, the 5751 vacuum tube will do wonders. May 10, 2016 · My preamp (Sound Valves VTP101) is a cathode follower design using three 12AX7's in the line stage. To answer the question of what changing the PI tube type does? Basically, it will either increase or reduce your signal to the power tubes overall. It is possible that you have a weak 5751,unfortunately I dont have any current production Feb 8, 2009 · 5 are old "Black plate" GEs from the late 1950s. ) brings out the best of the best. Tested very strong, with balanced triodes, in the 89-91% life expectancy range, based on original spe Jul 30, 2022 · The 5751 preamp tubes have slightly less output as 12 ax7's, so my amp still breaks up, but not as quickly. i`ll keep you all posted at every stage. P1 is the input gain, which is why I used a 5751 as I had a high output cart (2M Black), P2 is the RIAA curve, and this has to be a ECC83, P3 is the cathode-follower/output and I felt the 5814A drove my preamp far better. com after reading this earlier this week and took them to the practice space last night. A 12at7 is about 50% lower gain according to the chaps at watford valves. These tubes were designed for different purposes than 12AX7, but they share the same pinout and filament voltage. The preamp boosts and colors the pickup’s signal as it sends it along for further amplification before being transformed into sound. Perfect SRV-type crunch for blues, has that Southern Skynrd-es Nov 8, 2020 · 32mA biasing per tube in the EL34/KT77 family. Tubes are guaranteed for 30 days; Preamp tubes are matched by gain and mutual conductance (Gm) Power tubes are matched by mA and Gm The JJ 5751 is a lower gain pre-amp valve that that can be used as a drop in replacement for an ECC83 (12AX7). This set contains 2 Tung-Sol 5751 New Production Preamp Vacuum Tube Tube type, manufacture, and NOS test quality will not change. The 12AX7 family of dual-triode preamp tubes consists of the 12AX7, 5751, 12AT7, 12AY7, 12AV7 & 12AU7. Your tubes will be packed VERY WELL and shipped promptlyThis low-noise tube is recommended for best clean tone with big bottom, warm midrange and silky top end. Yes really. So I keep searching. Elekit TU-8500 Stereo Tube Preamplifier Kit; Elekit TU-8550 Stereo Tube Preamplifier Kit; Elekit TU-8850SE Stereo Tube Amplifier Kit; Elekit TU-8900 300B/2A3 Tube Amplifier Kit; Elekit TU-H82 Hybrid Tube Amp Kit; Model 16LM Mono Integrated Tube Amplifier; Model 8LM Mono Integrated Tube Amplifier; Model 8LS Stereo Integrated Tube Amplifier Siemens 5751 Triple Mica tubes made in Germany. You can get that crunchy sound sooner and with lower volume. 85. Extra rugged to whitstand military use. On an amp with not as much gain, the overall sound will just be weak. Especially this low-noise tube is recommended for best clean tone with big bottom, warm midrange and silky top end. Used – Very Good. Don Tung-Sol 5751 Audiophile PreAmp Tube with Gold PinsBrand New with Full Manufacturer's Warranty!Item: 5751 TUNGSOL GThis 5751 is a drop-in replacement for any 12AX7. A great choice for taming the highs and reduce compression on your amplif The gain factor of a tube simply measures how much it amplifies the input signal. I have tried a 5751 in the v1 slot on a different amp and it did lower the gain and give a lot more clean head room. com/LeonTodd♫ My music - https://ragdollrock. To that end, let's consider what four compatible nine-pin, dual-triode preamp tube types can bring to the table as regards the gain-making potential of your first preamp-tube slot, and how swapping one for the other can noticeably alter your amp's performance. The 12AX7 commonly known as an ECC83 would have to be the most widely used tube in existence. To lower the gain of a preamp stage a little, you can swap a 5751 into any socket that carries a 12AX7. The guitar just sings, I'm so A new take on the classic 12AX7 preamp tube. Loving more power tube tone without the harsh 12AX7 preamp tubes Dec 13, 2007 · A seller suggested me the JAN GE 5751, a 30$ tube. I bought it NOS and used it to tame a LA610 preamp. JJ Electronic 5751 Standard There will still be plenty of gain – so if you own a high-gain preamp that does not have these classic crunch characteristics, the 5751 tube will work wonders. The 2 5751s changed the whole dynamics of the amp! Clear, chimey, Stratocaster, with much more headroom. Because the preamp puts out a lower wattage A very popular tube, the RCA Command series 5751 preamp tube is sought after for the outstanding clarity & true tonal conveyance they provide, with ruggedized filaments for extra long (10,000+ hour rated) life, to withstand the demanding and punishing use they were put under as military tubes Find many great new & used options and get the best deals for JJ Tesla 5751 Gain Tested Vacuum Tube Low-gain 12ax7 at the best online prices at eBay! Free shipping for many products! Here is a very nice Sylvania 5751 Preamp vacuum tube, great 12AX7 sub. Sovtek 5751 Vacuum Tube #2. Tung-Sol tubes reflect the b | 5751 TUNGSOL This 5751 is a drop-in replacement for any 12AX7. Dec 15, 2008 · Counter-intuitive though it might sound, armed with the above knowledge regarding preamp tube distortion, many players have learned to create a bigger tone by using lower gain preamp tubes. FREE Shipping on all tubes. $54. 5751 tube is often found in high linearity low distortion headphone amps. Price $45 + $3. Mar 16, 2018 · TubeDepot supplies vacuum tubes for musical instrument amplifiers, Hi-Fi amplifiers, vintage vacuum tube recording gear and associated equipment. I will also echo the sentiments of others that the Mullard (so called) reissue 12ax7 and CV4004 are great preamp tubes! This 5751 is a drop-in replacement for any 12AX7. New production tubes from JJ, Sovtek and Black Sable treated JAN Phillips 5751 NOS! Elekit TU-8500 Aug 26, 2020 · In that particular amp, I would vote for the Tung Sol hands down as a great V1 tube. This piece of gear has sold. The pins were cleaned, all lettering is good and they both test very very strong on my B&K Mutual Conductance tube tester. 55, now $16. Tung-Sol 5751 Dual Triode Preamp Tube. In fact, I have found this tube to be a great V1 for most amps. These are all in mint aesthetic The Sovtek 5751 can be subbed in for the 12AY7 in original Fender Tweed amps and in the socket for the 12AT7 reverb driver tube. Warm tone with great note definition, lots of harmonic content and wide soundstage. These reviews are a vital resource for learning about manipulating your amplifier’s tone through better tube choices. (Image credit: Future) Having said all that, the primary purpose of a triode tube – and indeed the amplifier itself – is to increase the amplitude of the input signal. I dont know this to be a fact,but the current production 5751's sound to me like they just labeled some "weaker" AX7's as 5751's. Sovtek 5751 Vacuum Tube. Brilliant tube that does a LOT for an amps front end if one so desires. Super detailed and without annoying frequency spikes The JJ 5751 is a high quality, low noise tube built to classic 5751 specs. The 12AX7, 12AT7, and 12AU7 all belong to the same family of nine contact, twin triode tubes. Although this tube uses the classic short plate design it was engineered from the inside out as a purpose built 5751 rather than a low test 12AX7. Perfect for musical instrument amplifiers and Hi-Fi amplifiers; Compatible with vintage vacuum tube Sep 24, 2014 · The 5751 will lower the gain by about 30% I think it is compared to a 12ax7. More like 68-72mA, which is still closer to 60%, which is technically cooler, yet warmer than factory. Brand New Tube Amp Doctor TAD 5751 premium selected preamp tube. Tung-Sol 5751 Audiophile Preamp Tube. Some say it's fizzy, this immediately goes away with higher volumes/SPLs, but if it bugs ya, it can be remedied with a decent tube-set or a 5751 (Jan-GE/Philips) in V2 or V3 but it really changes the structure - a lot. With its high-durability military grade construction, it boasts extremely low microphonic response, rugged performance in extreme conditions coupled with extended life capability Jun 18, 2010 · Had a 5751 preamp tube in one of my amplifiers and replaced it with a 12ay7 and noticed right off less gain and a bit more touch sensitivity in this amplifier have always used 12ax7 , 12au7 and the 12ay7 anyone else have any comparisons between them and noticed the same thing . But which tube will make your guitar sound its best? Tube preamps give you the best of both worlds. Tung-Sol tubes reflect the b | 5751 TUNGSOL Apr 11, 2011 · Early 1950's CBS 5814A tubes. A new take on the classic 12AX7 preamp tube. Of course they're a top choice for phono preamps and hi-fi equipment (or basically anything using 12AX7 tubes). Mar 16, 2022 · Current Z Amp - 2017 Cure Guitars - 2020 Epiphone Les Paul Classic - Butterscotch Blonde Blackguard Tele (partscaster) - 2020 Eastman SB56/NGD - Gold Top Probably the best sounding 5751 tube ever made. this is all getting so interesting. Super detailed and w A new take on the classic 12AX7 preamp tube. Dec 4, 2022 · What The Tubes Do In Most Marshall Tube Amps July 8, 2016; Chicago Blues Box Amps – Dan Butler Interview June 9, 2016; Back To The Future for Vacuum Tube Technology June 7, 2016; Guitar Flamethrower – Tone On Fire May 24, 2016; What Tubes Do In Most Early Fender Tweed Amps May 20, 2016; How To Tell If Your Vacuum Tube Is Bad April 9, 2016 Jul 16, 2018 · The Gain Range: Four Levels of Hot-to-Cool Tube Types. This 6072A tube continues the tradition. The 5751 and 6550 tubes from G. Those people talk about matched PI tube, so both sides of the PI tube are matched giving the same signal amplitude for both power tubes (yes, there are 2 preamps in a preamp tube). $25. This is a VERY strong testing & crunchy toned vintage 1950s GE triple mica /black plate 5751 preamp tube. These tubes are very low noise and have a huge sound while retaining clarity. In the Fisher tube amp phono section, they're just wonderful. Added a capacitor brighten up the dark-sounding LO input. They are one of the 5751s with more mids, so they work great to liven up a scooped sounding preamp. 16 1960s RCA 5751 12AX7A ECC83 Preamp Tube Black Gloss Plate TEST VSTG+/BAL. They sound at home in any amp that needs detail and a wider soundstage. are simply the best. A good alternative to GE, RCA, Sylvania or Raytheon models. I changed the first tube in the line stage from a 12ax7 to a 5751 because I got the impression the first stage was overloading the second stage. JJ 5751 Preamp Vacuum Tube #3. Remember though, just because Stevie used a 5751 or awesome guitarist #1 down the street uses a so-and-so NOS $300 preamp tube, doesn’t mean it is right for you. Midrange is fine, but lacks the pure awesomeness of the 801S. i have to say too that i bought the jan philips 5751 tubes from a uk vendor and ordered them over the phone. NOS specs call the 5751 a “special 12AX7” having a high-mu amplification factor of 70. These are all in mint aesthe Tube Amp Doctor 5751 Preamp Tube. Mar 8, 2017 · Went from no signal to balls out at around 2 on the preamp gain with no discernable difference after that. 5751 Tubes have 30% less gain than regular 12AX7s, so they are also very useful to make the gain pot travel more usable on amps that have too much gain. Preamp tubes; Power tubes; Rectifier tubes; Sockets / Components. 12AT7, 12AU7, 12AY7, and 5751 tubes are related to 12AX7. Octal Sockets; Noval Sockets; This HIGHGRADE 5751 is a super low noise Tube for Best Clean Tone Mar 15, 2015 · Preamp tubes are plug and play, and any of the tubes you mentioned, and a 5751, are all interchangeable, and each have different gain factors. PRICE PER This 5751 is a drop-in replacement for any 12AX7. $32. In a console amp (Motorola, Maggie, etc. The original 7025 tube was a 12AX7 that was tested and selected for the lowest noise and microphonics for use in the critical first preamp stages of amplifiers where noise and microphonics could be an issue. 5751's are great for achieving a Southern/SRV type tone. If you need multiple matched tubes please see our "Balanced and Matched" option. When I mean "better" I don't necesserely mean with less distortion or breakup, but with a twist, something smoother, creamier, you know. Buy from the experts and avoid hassle! Brand New In Box JJ Tesla 5751 Gain Tested Vacuum Tube Low-Gain 12AX7 &nbs Vintage RCA 5751 preamp tubes made in the US. Today's new production Tung-Sol tubes are constructed with the same commitment to quality and reliability. Performs great for HiFi too! Replaces any 12AX7, ECC83, 7025 etc. It has 70% of the gain of a 12AX7 so it will reduce gain for sure in V1. This High Grade selection is of the highest quality with lowest noise (microphony, hum, hiss) level. Typically only 1-5% out of the whole production yield make it to meet the High Grade requirements. We provide tube sets for virtually any vintage or new production amp on the market. Nov 28, 2020 · I never biased mine hot, but certainly warmer than factory. Tweaked the amp's fixed-tone stack for a more Blackface Fender curve. I know cos' I have a JanGE5751 and I used it in V1 of my Legacy and the amp just sounded like diarrhea. But my second favourite tube is the Raytheon you both mention. Vacuum Tube - 5751, JJ Electronics - A dual triode that can be used in place of most 12AX7 circuits. These are all pin compatible with one another, the only differences being the gain factor of each tube. 95 (25% savings) JJ Electronic 12AX7/ECC83 Preamp Tube. They only have 70% of the gain of a 12AX7, and are often used to quiet Feb 28, 2012 · In the hi-fi world, your goal is the non-distorted pristine sound. Sep 5, 2007 · A 12AX7 is a 1 mu tube and a 5751 is a . I have many NOS 5751's and 12AY7's and can tell you I do see a big difference between these tubes. About four years ago I became interested in the 5751 as the comments seemed all positive- that the 5751 is capable of a much more refined sound than the 12AX7. $0. Extremely rare CBS Hytron 5751 3-Mica tubes. But what are the differences? It depends on which tube you are replacing. 50 shipping when combined. 7 mu tube. These are all in mint aesthetic Shuguang 12AX7B Vacuum Electronic Tube VaIve Instead of 12AX7 ECC83 6N4 5751 7025 B339 for HiFi Hi-end Amplifier Audio Senior Player Headphone Pro-amp Fever Acoustic Guitar Pedal Preamp DIY Lab 1pc No featured offers available $25. They sound wonderful on anything. JJ Electronic 5751 Factory Data Sheet: 5751 Our observations: Another short plate preamp tube from JJ which was released to us in January of 2012. This Tung-Sol 5751 tube is undoubtedly one of the most performance-oriented 5751 tubes produced in Russia with an affordable price tag. Assorted brands in stock. This set contains 2 JJ 5751 Preamp Tube Feb 5, 2014 · Even to a relatively untrained ear. Sovtek 5751 - The Sovtek 5751 is an affordable alternative to the 12AY7 used in original Fender tweed amps and can be subbed for a 12AT7 reverb driver tube. Today, a look at almost any guitar tube amp, be it Fender , Marshall , Vox , or any other, will prove the 12AX7 / ECC83 / 7025 tubes are here to stay. This set in particular includes 2 JJ 5751 Preamp Tubes, perfect for enhancing your amplifier's performance and delivering high-quality sound. Like the 12AT7s, each 5751 has been tested. It has 30% less gain that regular 12ax7 tubes. Some of the warmest 5751 tubes but with a lot of clarity, midrange focus and tight lows. However, with 30% reduced gain, the 5751 is a fantastic way to tame a distortion stage. 5751 RCA black plates triple mica "D" getter low hours/tests like new 1950's (2. I'm still using one in the PI postion. Show More. Tung Sol 5751 dual triode preamp tube. One of the "Holy Grail Tubes" in audiophile circles, they are very rare and very sought after. The Tung Sol 5751 has a gain of about 70-80% of the standard 12AX7. May 30, 2007 · Narrow Panel Tweed Fenders designed around the 12AY7 in the first preamp tube slot also have different component values elsewhere. 5751 tube also works great in guitar amps in place of 12AX7 to tame the gain. However, with 30% reduced gain, the 5751 is a fantastic way to tame a distortion stage and tone shape an amp. That drives the price up, and makes them more rare, but they're a wonderful tube and a drop-in replacement. These JJ 5751 utilize a "short plate" design and have Mar 24, 2020 · How to: Often with a tube amp you might wish that the actual amplifier had less gain. It has between 20-30% less gain than the standard JJ ECC83s. I put the 5751 in the mesa pedal first tube and a 12ax7 second and an 12AY7 in the first stage of the princton. The JJ 5751 has all of the qualities we have come to expect from JJ Electronic, a nice tight low end, a natural open mid, a great harmonic structure and a sweet high end that is not brittle. 5e3 Tube layout (Seen from behind, V1 is to the right side) V1 12aY7 = Preamp normal and bright channel; V2 12aX7 = Preamp normal and bright channel; V3 6V6 = Power tube #1; V4 6V6 = Power tube #2; V5 5Y3GT = Rectifier tube; Summary. This tube is also incredible as a phase inverter in some circuits. fm/the-gear-podcast♫ Swe In hi-fi preamps and CD players, the TAD selected 5751 will lower the noise floor and sound smoother and clearer than many 12AX7 tubes. (By the way, the Sylvania 5751 are the best sounding V1 tube I have ever heard in a Hot Rod Deluxe. Multiple tu Preamp tubes NOS and like new - the best of the best! Log-in. The rugged build of this tube and reduced gain (30% less than a 12AX7) can improve headroom and give better control in high gain stages allowing users to more easily dial in sweet spots. Brand New. Featuring the Windmill Getter design that so many seek, rich in tone, low noise, you can't find better. Aug 10, 2023 · The 12AX7 vs 12AT7 are two of the most commonly used preamp tubes. 5 watt practice amp. 1960s Meatball Logo RCA 5751 12AX7A ECC83 Preamp Tube Black Gloss Plate TEST VSTG++/BAL. 1960s RCA 5751 12AX7A ECC83 Preamp Tube Black Gloss Plate TEST VSTG+/BAL. A good upgrade for a jazz player wanting tube sounds. Pair of JJ 5751 Preamp Tube #5. Feb 7, 2007 · I have an original vintage 1965 Fender Princton reverb, and Mesa Boogie V- twin tube pedal. Just be sure to power off the amp before swapping tubes. Preamp tubes are generally not driven that hard and will usually last longer than the Dec 6, 2016 · Likewise, the JJ-5751 in V2 was also an excellent move and the tone produced by these tubes in these positions was quite dramatic when compared to the JJ-5751 in V1 and the 7025-WA in V2. 12AT7 * * * * The 12AT7 is a clearer sounding tube than a 12AX7 but with a little less gain. The JJ 5751 was designed as a “ruggedised” high mu, dual triode tube with similar specifications to the 12AX7. Double mica grey plate with O getter model (USA made). Tung-Sol Reissue 5751 Tube #1. 12AX7 Family Tube Substitution. GE JAN spec 5751 Preamp TubeAll well within NOS specs !Test results are scotch taped to each tube Smooth out that raspy preamp ! and let your power tubes sing !!!Really it works !Stevie Ray vaughans secret weapon tube (google for the story) More great gear here, click on our store name above JAN-GE 6072A Black-plate - General Electric is known for producing many of the best tubes ever made in the USA. In many cases, these tubes are interchangeable and can easily be swapped. Dec 10, 2010 · The 5751 is a military spec tube, with a gain of 70, vs the 12AX7's gain of 100. Whether you have a vintage amp or a new production model, we have tube sets to meet your needs. Initially, Electro Harmonix used to own this 5751 preamp tube brand before the Russian manufacturer took it over. While it uses the same rugged build and thick glass as other JJ preamp tubes, this tube differs in construction from the typical 12AX7 in that it features a medium-long plate, which provides a dynamic and open sound with a rich forward sounding mid range. Mar 25, 2021 · So pending on the amp, its V3 for 3 tubes, V4 for 4 tubes and so on. TAD 5751selected preamp tube (RT009)5751 = a 12AX7 with a bit less gain and big plus on tone! Low-noise Tube for Best Clean Tone! The TAD Selected 5751 is our first choice for noticeably improved clarity, smoothness, and a true vintage tone character for most guitar amps! Strongly committed to quality manufacturing, Tung-Sol tubes have always been known for their reliability and great tone. $49. JJ Electronic 5751 Current Balanced. I was wondering if any of you guys ever tried it, in V2, 'cause that's where I would put it, since I don't want it to alter my dirt channels. A great The 5751 preamp tube is an affordable alternative to the 12AY7 used in original Fender tweed amps and can be subbed for a 12AT7 like a reverb driver tube. IMO, it does make a difference, as does better preamp tubes. Haven't found a need for the Mullard or Tele's in the consoles so these are the ones. We guarantee NOS test scores, no microphonics (noisy tubes), tight matches, and that they work in your application. Vacuum Preamplifier Tube, Gold-pin Version of Sovtek 5751. A great choice for taming the highs and reduce compression on your Oct 25, 2007 · One of Stevie Ray Vaughn’s favorite tubes was the 5751 preamp tube. Swapped stock speaker with a more balanced Eminence Legend 105-8. The rugged build of this tube and reduced gain (30% less than a 12AX7) can improve headroom and give better co… read more Jan 12, 2012 · the tubes i`m currently waiting on now are the ge tubes, sylvania 5751`s and the kt88-z treasure tubes. The Sovtek 5751 is a special version with 70% of the gain of a normal 12AX7. They have been used to drive audio units for decades and for good reason. At least in my Cary 303/300 CD Player. 4 x 12AX7 and 1 x 12AU7 tubes, I have to say that my favourite tube in the V1 is a NOS Telefunken 12AU7 (even though technically in the V1 it should have a 12AX7A (7025) or similar). 4ma/2. So the cathode bias resistor on an amp designed to use 12AX7s in the preamp slots may not be perfect for other preamp tubes run at that plate voltage and depending on other things like input impedance. Tube layout. I also have some 1950's RCA, GE and Raytheon 5814A tubes to try and will be interested in seeing how these compare to the CBS tubes. These test as per 5751 spec with the proper t Jan 8, 2015 · Tried a 5751 last week, a GE triple mica military issue from the 1950s. E. Made in Russia. $23. When it comes to the best 5751 tubes, we have to give them to the Sovtek branded vacuum tubes. Also sounds great with a Fuzz Face, both Germanium and Silicon. The JJ 5751 preamp tube can be used in most 12AX7 circuits to achieve more headroom. Replaced the China tubes with 2 JJ 5751 Tubes. e. They give you more headroom (i. 16 (1 new offer) JJ 5751 Preamp Tube. Dec 4, 2022 · 12AX7, 5751 and 7025 tube reviews by John Templeton. But my one gripe: the midrange glory is gone. Add to Cart. com♫ Listen to my Podcast - https://anchor. Now in V3, I have read that you want to avoid long-plates - like the 5751 - because of potential feedback issues, so I opted for a Marshall branded ECC83S in This 5751 is a drop-in replacement for any 12AX7. The Groove Tubes GT-5751-M Select Preamp Tube is a lower gain 12AX7 tube type. However, because it is a military spec tube, it is supposed to be more rugged than a 12AX7 or 12AT7 Tube Amp Doctor 5751 HG Preamp Tube. Shop Policy . Tested VERY strong at 11/11 balanced on the Orange VT-1000 & 72/72 where 66=NOS on the Model 157, and sounds incredible. Sep 3, 2008 · The 5751 is a lower gain tube than an AX7 so it may very well work wonder on amps with OTT gain like the Savage or Recto's. 99. Photo by Andy Ellis Sep 6, 2010 · Tha JAN Phillips is an "old stock" tube,if its new old stock is questionable. New Sensor is an American corporation and since taking ownership of this factory has been steadily improving the quality of current production tubes. Cheers! Strongly committed to quality manufacturing, Tung-Sol tubes have always been known for their reliability and great tone. Considered the finest 5751 ever made, the Raytheon CK-5751 is the gold standard of the 5751. This low noise tube is especially recommended for clean tones with big bottom, warm mid-range and silky top end. Originally $22. These are relatively unknown but they are simply one of the most musical tubes out there. 3. Amperex ECC83, Mullard EF86 (last version), GE12BH7, GE12AY7, GE 5751 Tube-Town 12AX7 / ECC83 Preamp-Tube The TT12AX7 impresses with its fine and detailed reproduction of the highs, which is maintained even at high amplification levels. Thus it is going to be closer to a 12AT7 (gain of 60) in terms of gain than a 12AX7. It also seems to give my amp a bit more focus as well. However, the change in ownership has not affected or NOS USA Made RCA 5751 preamp tube As used by SRV, and many others Great upgrade for vintage Fender amps In original packaging Mint condition. Tung-Sol 5751 Tube #4. Performs great for HiFi too! Replaces any 12AX7A/WA, ECC83, 7025 etc. It had a 12ax7 pre-amp and a 12AT7 in the power section. Jan 10, 2010 · I've got telefunkens and mullards for the preamp but I'm at a loss as to output tubes. JJ 5751 Preamp Tube. Great post!! Vintage RCA 5751 preamp tubes made in the US. The TAD Selected 5751 is an excellent choice for improved clarity, smoothness, and a true vintage tone character for most guitar Philips ECG 5751 NOS Tubes. The three double thickness mica plates a TL;DR Yes, you can swap a 12AX7 with 12AT7, 12AU7, 12AY7, or 5751 tubes. The RCA ones are treasured by guitar players, having come stock in many Fender amps. The majority of the remaining 20 are old Sylvanias from the 1960s. Although this tube uses the classic short plate design, it was engineered from the inside out as a purpose built 5751 rather than a low test 12AX7. Electro-Harmonix 5751 Gold Preamp Tube. this guy was fantastic and very knowledgable about tubes Swapped the stock 12AX7 preamp tube for a lower gain JAN 5751. It follows the usual compact JJ plate design and is well balanced and harmonically ric Philips ECG 5751 NOS Tubes. JAN Sylvania 5751 NOS Tubes. A good alternative to GE, RCA or Raytheon models. In this application, you will get good gain with a warmer sound than the 12AT7. Stevie Ray Vaughan was known to use 5751 preamp tubes to coax a firmer crunch from his vintage Fender amps. 14-Day Return Policy. Dec 18, 2006 · Bowled over by the Sylvania triple mica, black plate, square getter 5751 Ladyflyfish, I have tube gear using 28- 12AX7's. For example, the common 12AX7 tube has a gain factor of 100, while a 5751 tube (which is often used in place of a 12AX7) has a gain factor of 70. Though it is not a true 12AX7 - the 5751 can be used as a gain reduction device in place of the 12AX7. The 5e3 Deluxe belongs to the narrow panel tweed Fender era and was made between 1955 and 1960. The standout feature of these tubes is that they have 70% more gain Shuguang 12AX7B Vacuum Electronic Tube VaIve Instead of 12AX7 ECC83 6N4 5751 7025 B339 for HiFi Hi-end Amplifier Audio Senior Player Headphone Pro-amp Fever Acoustic Guitar Pedal Preamp DIY Lab 1pc Electro-Harmonix 12AY7 EH / 6072A Vacuum Tube. Brand New in original box. This tube has plates that are 25% to 30% larger than the Electro-Harmonix and have unequaled build quality. This tube offers low noise and low microphonics. Ordered 3 JJ 5751's from Tubestore. If your amp is built to run on a 12AX7 or ECC83 ( which the DSL50 is) then lowering to a 5751 just slightly reduces the signal. Pr of the excellent sounding and rare Sylvania GB-5751 Gold Pin preamp/driver tubes, triple Mica, gray plates, Military specifications and performance. ECC83 - European designation for 12AX7 12AX7 - The 12AX7 is a high-mu twin triode which operates in typical service as a class A amplifier, in the preamp stages of high fidelity, musical instrument, and public address amps, as well as professional line and microphone preamps, and many other audio and communications devices. The Tung Sol 5751 preamp tube is a dual triode tube and a optional replacement for a 12AX7. Due to a higher H3 part, the TT12AX7 sounds significantly cleaner than many other 12AX7/ECC83 tubes, which makes the bass range appear much tighter. The JJ Electronic 5751 is a dual triode that can be used in place of most 12AX7 circuits. It’s very sweet sounding. This 5751 is a drop-in replacement for any 12AX7. 12AX7 Tubes Other names for a 12AX7 include ECC83 5751 12DW7 ECC83, ECC82, ECC81, ECC823, ECC832, CV4004. Review – JJ 5751 Tube Oct 17, 2007 · Here is more information on different preamp tubes. ♫ Become a Patron - https://patreon. With 30% less amplification than a 12AX7, but 100% interchangeable, an amp using the 5751 preamp tube creates a creamier and smoother tone than with a 12AX7. It has a very complex harmonic content and very pleasant mids. What tubes can you substitute or replace for a 12AX7? ANSWER - You can substitute a 12AX7 for a 12AT7, 12AU7, 12AY7, 5751 or a 7025. Wb In hi-fi preamps and CD players, the TAD selected 5751 will lower the noise floor and sound smoother and clearer than many 12AX7 tubes. So gather a small collection of preamp tubes to try and go for it. Special note for 5751 preamp tube types: The 5751 vacuum tube is not a true 12AX7, but is often used in place of a 12AX7. Item ID: EHX5751G. bglvk qihma qensjxy kzy kpzil sfpt sstn vljut hdrdf rbgtw