The 12ax7 tube is a preamplifier tube that is used in phono preamps. This tube is used to amplify the signal from the phono cartridge to the level that can be used by the phono preamp. The 12ax7 tube has a high gain and low noise level, which makes it ideal for use in phono preamps.
The 12ax7 tube is also used in other types of audio equipment, such as amplifiers and preamplifiers.
Genalex Gold Lion 12AX7/ECC83/B759 Custom Tube Gold Pins 12AX7GENGP Original Genalex Gold Lion ECC83/B759 tubes are considered among the best 12AX7 types ever made. They are hard to find and when they are available, they are expensive.
They exhibit a large detailed soundstage that is sought after by discerning audiophiles who demand the highest quality sound. The reissue Genalex Gold Lion ECC83/B759 recreates the sound signature of the original.
This tube features balanced sections and gold plated pins. To be labeled Genalex Gold Lion, tubes must endure and pass the toughest testing the industry offers.
I bought these to use in a tube based drive pedal which can be notoriously raspy with the wrong tube. I have a large collection of premium NOS tubes and just wanted to see if there was an obtainable current production and to check what the hype was about.
This was just a touch smoother than the best NOS I tried. Like everything matching all the gear involved is the art. I put them in my vintage Princeton just to hear and liked the RCAs better. These were not bad just different.
I have a collection of Tube Drivers and Maxon RTDs and this is the tube for those. Regarding those a lot of people try 12AU7 and the like to tame the gain IMO that is not the answer, use a smooth tube like the Gold Lion B759 and learn the sweet spots.
These have outperformed all of my other tubes so far which include Mullard reissues, Tung-Sol reissues and PsVane. They are being used in the preamp stage feeding 4 Sylvania 6sn7 NOS bad boy tubes and the power tubes are Genalex Gold Lion KT88s.
ECC83 MG is 12AX7 with Mid-gain, which means fuller and richer mids achieved by medium long plate. It provides a milder sound than the regular ECC83. Very low noise and microphonics. Hihg quality products and best service.
Given the scarcity of tubes on the market, I was very excited to get my hands on these JJ 12AX7 preamp tubes. I installed them in my Fender Blues Junior, conducted a burn, then hooked up my Telecaster to give it a go.
A marked difference in sound quality, very rich tones and allowed my Eventide H9 to sound better than ever. There are better, premium tubes out there, if you can find them, but these performed beyond my expectations.
Additionally, delivery and customer service was top-notch. I cannot comment on durability yet, since I have only had these for a short time, but I suspect I will not be displeased. Highly recommend.
Really happy with the service from Amplified Parts. This was my first order with them, and I got an order confirmation very quickly, and their site was very good at providing updates. My tubes were shipped the same day I ordered them and they arrived faster than I expected.
Thanks! I was previously running Groove Tube 12AX7’s in my amp but see the JJ’s highly recommended across various guitar forums I visit. I bought a complete set of 12AX7’s and EL84’s. I really didn’t expect much of a difference, but boy was I surprised.
After I plugged these in, my tone was night and day difference over the groove tubes. My amp has never sounded so good, and I didn’t want to stop playing. It sounded much more alive, bright, and with a better mid-range punch.
These were the gold pin JJ’s and I have not compared them to their standard 12AX7’s, so I’m not sure how much, if any, a difference the gold pins make. I might try the standard tubes next time just to see if the additional cost is worth it.
Bottom line, you won’t be disappointed with either JJ tubes or the service from Amplified Parts.
I use this tube as my everyday listening tube currently. I favored it immediately above new production Tung-sol which came with my Jolida Tube Dac III (I have 2 of them, which allows me to A/B them).
There was more harmonic information and slightly more warmth, but plenty of crisp high frequency detail and air. It is a very coherent sounding tube that faithfully plays back music with a sense of the whole recording; it doesn’t try to dissect the recording, while still allowing one to follow individual aspects of a performance if desired.
It gives you that bit of “extra” that solid-state always seems to lack on stringed instruments, voices, timbral resolution, etc. It is subtle but noticeable, which will please those who don’t want to veer into tubby rolled-off sounds.
Compared to a new production Mullard, it is a little less boisterous, in terms of its presentation. The Mullard gives a little extra “extra”, relative to my comments above. However, while the Mullard is slightly preferable with classical, jazz, small ensembles and acoustic performances due to its highlighting capabilities, one might argue it is a bit less refined and coherent, especially when pushed hard.
This isn’t bad, just different. Even certain metal tunes can sound great with the Mullard, but it sometimes loses its composure. So then, the JJ ECC83s, is a stellar all-rounder and a very satisfying tube.
The gain is just ok with these tubes but they lend them self or better suited for amps that have a harsh bite or like a champ/princeton that is just too crunchy, these will definitely take the edge off.
If you are a Jazz guitarist then these are going to give you the softer edge with good definition. I prefer the Matched Gain JJ’s for a better bite and gain, but the best tube IMHO is the Genalex Gold Lion Matched Gain, across the board.
They cost almost twice as much, and they deliver. For Marshall amps and rocking a JCM 800 the Matched Gain JJ’s are the ticket. They deliver in the 800s and give a bit more bite than the Genalex. But Keep in mind that the Preamps are critical for the sound of your guitar or bass.
If you have a crappy pair of Power tubes then you are really wasting your time. Cheers.
Pro- best in V1 slot. Chime for days. If you have a 4 preamp tube amp put this in V1 ad a GT12ax7 to the V4 and try a JJ5751 in the V3. for a V2 us a GT 12ax7 or 12ay7. Oh yeh toss out the Celestion 70/80 if you have it and put in the Celestion cream 90 it will run an extra $275 on E-bay but you will bring the amp alive.
Now you got a great set up. (I have a Marshall DSL 40C). Buy a GT 12AY7 %70 tube for a reference in V1 for fun and see what you think. Rely on your favorite distortion pedal for the front end drive and let the amp do the rest (Channel 1&2).
You are gonna love this tube. You will love the reverb with this set up as well. Con- just a bit thin on the bottom end but only if you have single coils on your guitar (Strat sw position 1), (turn up the amp bass knob).
Swap between the Mullard 12ax7 and a GT 12ax7 and see which one you prefer in V1/V4. the Grove Tube is a bit tighter on the bottom end but not as much chime as the Mullard so try both in V1 / V4 see witch you prefer.
Was looking for a fat sounding quiet new production 12AX7 an from the reviews these looked interesting. Replaced several of the factory JJ’s in my PRS MT 15 head with these. Wound up with a pair in V2 and V3 for the gain section of that amp and it both opened up the tone and brought clarity and noticeably dropped the noise floor.
Was quite pleased and had bought 4 just to try so tried the other pair in the V1 and 2 slot on my Mesa Boogie DC 5 head. Very quiet fat tone and a lot of overtones and clarity in that amp. Am very pleased and will order a few more of these.
So among the best sounding and quietest of the current production 12AX 7’s I have tried.
The Electro-Harmonix 12AX7 Gold is a phenomenal tube that is very detailed and musical sounding. Very low noise tube that is great for both guitar and Hi-Fi amplifiers. This pair has been tested and matched for a maximum difference of 10% for both gain and conductance.
Bought this as a replacement pre-amp tube in my Vox Valvetronix AD100VT-XL amp. Though it’s a hybrid amp and not powered by the tube, it plays a big part in the circuitry (namely the gain), tone and overall output.
Packs a powerful output while remaining clean and little to no background noise or interference. It is very warm and wide tonally speaking. Before this EH I was using a Mesa Boogie tube and I like this much better.
Less bite and gain to the distortion, but you can still crank it and get a wicked good modern rectified sound. Overall very pleased with the performance, sound and quality of this item. Well made. Would buy again.
These import tubes are definitely more rugged and reliable than their earlier American made and imported counterparts. The glass is thicker, the mica insulators are thicker and/or doubled up and they have far fewer incidents of filament flash and failure.
I have completely restored a 1996 (made in USA) Fender Hot Rod Deluxe amplifier. Along with all new tubes (this purchase), I have replaced all of the electrolytic capacitors, all of the coupling and tone stack (film) capacitors, several resistors, diodes, zener diodes, volume pots and IC op-amps.
This amp now works as good as (if not better than) when it was new, getting excellent tones from bedroom to stage levels, and should give many years of service before needing any additional work. I highly recommend both the Sovtek and Electro Harmonix replacement tubes in any tube amplifier.
The 12AX7LPS has a very specific sound, so be prepared to “search” for the right spot to use it. I happened to find it works very well in the V2 position of a Fender Hot Rod Deluxe. Something about the midrange response was better than a common 12AX7.
It was also noticeably punchier than the EHX 7025 I was comparing it to. As for the phase inverter application these are usually touted for, I really didn’t notice much difference in the amps I tried it in.
Love viva! Love the sovtek long plate ax7 tubes. Super duper awesome phase inverter tubes that are tested for balanced and sold at an awesome price!. did i mention the crazy fast shipping! Thank you Viva tubes.
The Telefunken Black Diamond Series ECC83-TK Pre Amp Vacuum Tubes is a well-balanced tube suited for all types of music and playing styles. Designed to allow for cleaner headroom than higher gain 12Ax7s when pushed into overdrive, it offers distortion with strongly defined lows, a rich mid range and clean, smooth highs.
Developed by RCA and released in September of 1947, the 12Ax7 is a high gain / low noise tube that is the most popular tube used in input / inter-stage audio amplifiers. The dual triode design makes the 12Ax7 compact, relatively inexpensive and produces a high quality full frequency response.
12Ax7’s are known for their rich even order harmonic distortion when driven into overdrive. Even order harmonics fit into the western musical scale and are more pleasing to the ear than the harsh odd order harmonic distortion created by transistors.
The 12Ax7 is also known as the ECC83, which was the European designation found on tubes from Phillips / Mullard.
telefunken ecc 83 brought out the best sound from this marshall dsl5c. low noise and cleanest sound i ever had from this amp. huge difference in the tone quality after I swaped in the tele funkens. though its a bit pricey compared to other brands, I beleiv its well worth the money if you are into precision quality tone from your amp.
This tube I bought and put into a Hughes & Kettner Triamp MK II. I tried it in three different positions. This tube, though it’s a 12ax7, is pretty relaxed on the low end. It has the upper mids of a long plate tube but without brittleness.
It’s very rich and clear. In the high gain channels it took too much away from the thickness but it fits very very nicely into the position that drives my cleaner tones.
This tube has a well balanced, colorful tone with strongly defined lows, mids and smooth highs. It allows for more clean head-room than higher gain 12AX7s. In overdrive, it is smooth and strong with well defined lows and Mids.
When pushed into overdrive it offers clean distortion with well balanced lows and Mids. The jj 12AX7 is well suited for all types of music and playing styles. It is also highly recommended for studio pre-amps and Hi-Fi gear.
I always buy Russian tubes over Chinese. Although the Sovtek sourced tubes are NOS of varying vintages (usually 2000-2005) Ive found them to be of much better quality and longer lasting for daily service vs.
Chinese tubes. which are just ok for light use IMO. Older US-made tubes from the 50’s & 60’s & 70’s are fine for radio/gear restoration, but not ideal for daily/continuous duty in modern studio equipment.
Plus, you’re paying almost the same or higher price for a 50 year old product of unknown condition.
The one of the most linear and musical sounding tubes on the market. Due to it’s large plates, it is not recommend in applications where microphonics may be an issue, such as V1 in high gain amplifiers.
The GT12ax7’s that came in my amp were just not doing it for me especially when increasing gain setting. I tried a few other brands some were worse and some too over the top with grit at higher gains.
I thought I’d just have to put the GT’s back in it until I read an article several years ago on the benefits of the long plate spiral tubes and gave the 12ax7lps a try and glad I did. They are not overly bright but far from dark sounding, no noise/hum to speak of and complemented my amp the best of all that I’ve tried.
I liked them so much I bought another pair for my other identical amp. I have finally found the preamp tubes both amps and like.
The Electro-Harmonix 12AX7 preamp tube has a nice balanced sound, a very low noise floor and excellent performance in terms of microphonics. The lack of microphonics may be due in part to the return of a shorter plate structure or better materials.
Try them in various amp stages to test their characteristics in the different positions. When should I use an Electro-Harmonix 12AX7 Preamp Tube? Pre-amps, tone stacks and phase inverters, a winner in every location.
The EH 12AX7 preamp tube successfully tames amps that defy all other attempts to kill microphonics and unwanted feedback. This tube is a winner, buy em and try em, they may be just the piece youve been looking for.
I initially bought these tubes trying to solve crackling and sudden sound drops on my Marshall DSL40C (which was eventually solved by replacing the powertubes but ok. ). I put these in V1+V4 together with Sovteks on V2+V3 to replace all stock Marshall branded tubes (which apparently are rebranded JJs).
While being sceptical on the sound difference that different tubes can make (and not solving my initial problem), I must say that this combination gave me a brighter, clearer, more articulated sound.
The individual notes are more noticable now: they were more ‘muddy’ with the stock tubes. The sound is not too bright or harsh and still have enough bite and body (which I believe comes from the Sovteks), which in total gives me a real versatile and balanced tone.
Overall: I have the deluxe Reverb reissue. 68′. Shortly after receiving I upgraded the speaker to the Eminence Swamp Thing. That was an immediate Improvement over the stock speaker, which by the way sounds great in a different amp.
But back to the tubes I originally replaced all the preamp tubes with JJ’s and it was just all right. One of the JJ’s must have went bad oh, and I put the groove tubes back in. Still wasn’t feeling it oh, so I ordered these 12ax7 EH’s.
There it is! Wow just wow! Night and day difference in the sound coming out of the amp. Fuller Bodied and nice break up! And thick just how I like it. I highly recommend these as an inexpensive Step Up, after a speaker upgrade of course in most stock amps.
By the way still running the Groove Tube Power Amp tubes oh, but I have read these do not affect it sounds so much so I will wait until it is necessary to replace them.
New Gain Matched Quad of Tung-Sol 12AX7 / ECC83 Reissue Vacuum Tubes The Tung-Sol 12AX7 is one of the very best new production 12AX7 models offered. These tubes are high gain, low microphonics and are VERY warm and detailed.
You’ll get true 3D sound with these. The filaments are almost completely encased within the plates so they don’t light up much, but they are fantastically quiet. The tone is comparable to the best vintage 12AX7s like Mullard or Telefunken.
In this head I only have these Tung-sols and the OEM JJs for comparison. I was never happy with the OEM tubes (valves). They sounded harsh and non-musical to me. I didn’t know if it was the head itself, or the tubes.
I swapped out the original tubes for another set from the same manufacturer, and it still sounded bad. I listened to a lot of comparison audio for all the major brands, the whole gamut from low-end generic tubes to high-end name-brand tubes and everything in between.
I after listening blind I settled on trying out the Tung-sols, and bought a pair, one for the common input and one for the high-gain channel. The Tung-sols sound much better than the original equipment tubes.
Gone is the harshness and non-musicality of the JJs. The Tung-sols overdrive more easily and more smoothly. They compress the sound better, and the sound is much more musical. In the bargain I gained some low-end “oomph” I’d been missing.
They’re a little more expensive than the tubes they replaced, but that tiny difference in price is well worth it. If I hadn’t heard it for myself, I’d hesitate to spend the extra money, wondering if it was really worth it.
I had heard that the Tung-sol 12AX7 tube would enhance the sound quality of the new ART Tube MP preamp I had recently purchased from Musician’s Friend. The original tube is one that comes with the unit and, although not bad, does not have the kind of warmth I wanted in this unit.
So I purchased the Tung-sol 12AX7, replacing the original tube, and could hear the difference immediately! Opening the unit can be a little difficult because the Philips screws are so tight. Pressing down firmly, while being careful not to strip the screws, works just time.
Use a proper-fitting Philips screwdriver with a robust handle that gets fairly close to the unit. This will provide you with the control you need without stripping the screws. But be careful! I found that just a drop or two of WD-40 on each of the four screws worked wonders eventually getting them loose.
Let the WD-40 sit for awhile before you try to untighten the screws. If they don’t come off right away, hit them with another drop or two, wait for five or ten minutes and then try again. They should gradually come loose as a steady pressure is applied.
Original Genalex Gold Lion ECC83/B759 tubes are considered among the best 12AX7 types ever made. They are hard to find and when they are available, they are expensive. They exhibit a large detailed soundstage that is sought after by discerning audiophiles who demand the highest quality sound.
The reissue Genalex Gold Lion ECC83/B759 recreates the sound signature of the original. This tube features balanced sections and gold plated pins.
I bought this tube to replace the stock 12AX7 in my Bugera V5 Infinium amp. While a great amp for the price, I found the tone to be slightly dark (not muddy or muffled, but just lacking some “sparkle”), even with a bright Telecaster.
Shortly after purchasing the amp, I decided to upgrade the tubes. If I had to describe this tube in three words, they would be bright, clear, and defined. I replaced the 12AX7 before changing the EL84.
Changing just one tube made a subtle, but noticeable difference. While it didn’t add very much treble, the Gold Lion did make the amp “clearer. ” Each note is more defined and glassy than before. Combined with a Mullard reissue in the EL84 spot and a few hours of break in, and the Bugera V5 is now clear and crisp! The Genalex Gold Lion is an excellent choice for a tube upgrade.
the tube was used in a Digitech Valve FX unit, I wanted a tighter more compact overdrive and that’s just what i got, I also picked up some good usable volume. I am not sure if I should have gotten an A series with the heater or not? I did pick up some clarity as well, maybe a little more brightness? its a good tube so far so good, this valveFX unit uses only 1 tube, my other Digitechs like the 2112 and the 2101 use 2 and my guess there would be MASSIVE improvements across the board in those.
people have to know that your different tubes lend to different characteristics and just because a JJ or whatever will last a certain amount of time doesn’t mean its the BEST tone wise, its so much larger in tube amps, your headroom, the tightness of your compression and OD, the speed.
some tubes deliver so slow cuz they are basically of inferior design and materials. seriously, I just do not understand people bragging when they try to sell their tubes amps “oh I just put all new of the cheapest tubes on the market and they are balanced” PHOOEE!!! also, ALL presets got quieter, meaning the unwanted noises vanished! TRY some better tubes and I mean the GOOD tubes not names the industry tosses around cuz they are cheap and they make big money off em, try some these hi end Genelex,Telefunkin, so forth, see what happens.
I personally guarantee you they will change your world if you are a serious player and have a relatively decent tube amps, even the shoddiest of amps can a good tube transpose into a fine amp, maybe some filter caps and its ON like donkey kong! try these tubes, you WILL NOT be disappointed.
industry lore proves they have lasting power in the worst of conditions being pushed weekend after weekend. read up on the data sheets of your various tubes, this IS a quantifiable facet, they can tell you which tubes will lend more headroom, blistering cleans so on and so forth, quietness.
the worlds players need to do something about this travesty they call good music in the popular genres, its pathetic shenanigan under thought and embarrassing as a human to call this good music!! we as musicians have a duty even if its just waking the neighbors up with a creamier, warmer, crunchier tone! get your self a full chassis full of Genelx Gold Lions and change the world!.
I’ve entirely re-tubed my Hughes & Kettner head with Genalex Gold Lion Tubes, and the difference from the ones that came from the factory is very noticeable. Singing distortion, terrific responsiveness to touch.
They may be a bit pricey, but are clearly a superior component.
Groove Tubes’ highest-gain preamp tube. This tube has a huge amount of gain, with terrific output that makes it a great choice for driving modern, complex high-gain circuits. It has a relatively high quality variance (making Groove Tubes pre-testing procedures especially important in this case), with a tight, strong and relatively bright tone that can really liven up a weak or tired, old vintage amp or a new amp with grade-quality tubes.
These pass every Groove Tubes premium certification for micro-phonics, hum, physical characteristics and function. Quite simply the best 9-pin triode preamp tubes you can buy specifically designed and tested for musical instrument amplification and standard equipment on Fender amps.
Outstanding and consistent performance for mixing and matching to get a signature tone from your amp. Groove Tubes’ highest-gain preamp tube. This tube has a huge amount of gain, with terrific output that makes it a great choice for driving modern, complex high-gain circuits.
It has a relatively high quality variance (making Groove Tubes pre-testing procedures especially important in this case), with a tight, strong and relatively bright tone that can really liven up a weak or tired, old vintage amp or a new amp with grade-quality tubes.
These pass every Groove Tubes premium certification for micro-phonics, hum, physical characteristics and function. Quite simply the best 9-pin triode preamp tubes you can buy specifically designed and tested for musical instrument amplification and standard equipment on Fender amps.
Outstanding and consistent performance for mixing and matching to get a signature tone from your amp.
I play on a Mesa Stiletto Duce II. Yeah, very high gain amp. The amp is 6 years old have never changed the pre amp tubes have always used GT’s in my Marshalls so tried them in this amp. The tubes sounded great.
The high gain went from super cool to insane the clean tone is awesome. The big problem is that I started losing tubes in my high gain slot after 3 months. I know how to test my amp and everything is factory spec.
Maybe it is my amp, but the Mesa tubes lasted forever. I never had an issue with GT’s in my old Marshall. These tubes cost more than just about any other out there. Maybe if not using a high gain amp, or maybe I got some weak tubes.
However; I’ll buy another brand for this amp next time.
Ordered a GT Gold Series GT-ECC83-S Preamp Tube to replace the original, 15+ year old 12AX7 in a recently acquired (used, eBay) Rocktron Voodoo Valve Witch Doctor pre-amp. Man, what a difference. Note articulation, sustain, smoothness and especially the “spongy-ness” of the low/mid-gain is just amazing.
A little bright on the high-end, need to dial down the presence setting on a couple patches and on my ENGL head. But it’s all good. Best upgrade I have made in a while. As for GT — they source tubes from different suppliers globally, test and use those that have the best musical properties and durability (mine was made in Slovakia).
SO, IMO, the premium you are paying for a GT is to eliminate the guess work and expense of finding a good sounding tube yourself, you know you are going to get one that has been tested and has a definite musical “voice”.
I got some advice from a friend on how to make my Marshall TSL100 sound like a Marshall should, after I told him that my purchase of a used TSL100 was very disappointing because of the sound he recommended changing the original Marshall preamp tubes for the GT ECC83-s Gold Series tubes.
Wow! The clean channel just sounds about as sweet and smooth as any amp I’ve ever owned, The other two channels “lead” and “crunch” are just as tight and punchy as one could ever hope for! Every note is heard distinctly the highs are awesome and the bottom end is very solid! I followed this up with a matched set (4) of Winged C’s (EL34) in the power section and I am loving every minute of it!.
This matched set of four Telefunken ECC83-TK/12AX7 Black Diamond Series Vacuum Tubes with Balanced Triodes is ideal for use in input and inter-stage audio amplifiers in homes, studios, and live stage applications.
From stompboxes and guitar amps to compressors and microphones, 12AX7 tubes are widely used for their even-order harmonic distortion and full frequency range. Offering high gain and low noise, these dual-triode tubes deliver extended headroom and balanced tone complementary to an array of musical genres, while the balanced triodes help to ensure a more consistent response from your equipment.
The ECC83-TK/12AX7 is characterized by its clean highs, thick midrange, and prominent bass.
Good clean full tone without any graininess. Nice smooth and sweet highs. N/A So far so good! When I put this tube in the tone and gain stage slot (v1) of my Blues Jr III Limited it immediately got rid of the slight treble harshness caused by the GT 12ax7-R that was there before.
I believe GT-12ax7-R’s are Sovtek 12ax7WA’s, so at this point I’m liking the WC’s more. The WC is supposed to be a higher gain tube than the WA but my amp sounds pretty much just as clean as it was, just minus the aforementioned slight treble harshness.
I also ended up trying a JJ ecc83 and thought that it took the amp in a noticeable step away from the Fender cleans direction. I didn’t give it a rating for this because several other websites are selling these for a different price, so I don’t want to downrate the tube just because I bought it for a different price.
Great for Marshalls and Fenders. Sweet warm mid range tone, complements tone of European amps. A tube that takes some of the edge off of high gain amps by reducing the brightness while still having the gain and articulation.
For those that change first stage gain preamp tubes to change the taste and character of their amps (remember, this can be done in less than a minute without tools, adjustments, or a “tech”). This is one tube that should be in your basic toolbox.
The basic tube sets generally are the 12AX7C, ECC83, and 7025 to cover a wide range of styles and tastes for most amplifiers. These pass every Groove Tubes premium certification for microphonics, hum, physical characteristics and function.
Quite simply the best 9-pin triode preamp tubes you can buy — specifically designed and tested for musical instrument amplification and standard equipment on Fender amps. Outstanding and consistent performance for mixing and matching to get a signature tone from your amp.
Great chiming tone with sweet, warm midrange excellent for Fender amps. Smooth distortion characteristics and one of the highest-output preamp tubes in the GT 12AX7 line, with very consistent quality.
Loved the JJ stock tube in my Orange MT20, but decided I wanted to try something else. Bought this on a whim in the Ocean NJ store. LOVED what it did to my Orange. added chime and sparkle to my MT20.
To my ears very Fendery. Not surprised thought Fender owns Groove Tubes, and it’s reported that this is the preamp tube they used in there “reissued” classic amps. Really cool sound combining Orange’s circuitry in the MT with a Fender Tube.
I bought a set of 5 to upgrade my stock Carvin MTS 3200 head. I’ve had this head for six years and it has never really satisfied me. When you look at it you see USA quality but I could never get the sound I wanted.
The hi-gain channel was just was not right for me. I had it packed away for the last 3 years and a few weeks ago I decided to give it another try thinking it was a good candidate for Ebay. I spent hours trying everything.
I got good but nothing satisfying. The clean on this was always great. it was the hi gain side that stunk. I changed the stock pre-amp tubes to this and the results were amazing. The distortion and reverb had a huge improvement.
In just seconds I was able to get the sound i wanted. The transformation was stunning to say the least. Next up, the power tubes. but for now my Carvin MTS3200 is smokin hot.
Given that I just bought a bunch of them and are happy. SO FAR. I’ll probably buy more of them when it comes time to get more. These are Shuguang tubes, bought in bulk by Groove Tubes, tested, labeled with Groove Tubes logos and so on, and sold.
There’s nothing really special about them compared to other tubes, other than GT tests them. 7 for this one, because I’ve purchased around 20 of these, and had 1 that was bad, so a couple stars off for that, and, the ones that are good are *borderline* microphonic.
but they have a VERY stong output. which (simply put) higher-output = more prone to microphonics. These are borderline – meaning if you crank up the gain, and point your guitar just right at it, it will give the microphonic feedback squeal, but if you tap them, they don’t ring or pop or anything like that – so, physically they are spot on, just have a very high level of output.
But, in real-world application, that won’t be an issue. so I enjoy their stronger output, GT charges quite a lot for their tubes compared to other tube vendors, but with the idea that they give the buyer value by testing them so well and weeding out the bad ones.
I went through MF to get these instead of my normal channels because I didn’t feel like waiting for shipping and, as I found out, MF’s return policy on bad tubes is great – they took back the bad one and sent me a new one.
MESA SPAX7 preamp tubes are a premium grade 12AX7 that possess an even higher standard of overall performance due to their incredibly low sensitivity to microphonic noise. This is the ultimate preamp tube to use in critical gain stage applications, particularly in first stage/input positions or other high gain stages in the preamp tube string.
These tubes are selected during our rigorous 12AX7 testing process and when found to be substantially more stable and quiet in extreme high gain applications, they are fitted with a shrink-wrap shielding, further stabilizing the tube and reducing external interference and noise.
MESA SPAX7s deliver the lowest noise floor for the highest gain output. While not required for optimum performance, SPAX7s are a great tube to have on hand as spares and for any applications where the absolute lowest noise floor and low-microphonic response is needed.
MESA preamp tubes are among the highest quality available and selected for their exceptional full-range tonal quality, stability, low noise and low microphonics. They provide the maximum level of high gain output with low sensitivity to microphonic noise while producing a balanced response across the tonal spectrum that is extremely lively, open and expressive.
All MESA tubes offer unsurpassed consistency and reliability for ANY tube amplifier, and certainly MESA amplifiers! Remember our dedication is to create the worlds finest tube amplifiers. And to achieve that goal requires a deeper commitment to tube quality because the reputation of our amplifiers depends on it.
Awesome tube for your Tube Preamp Effects Processor! Programs on my Digitech RP21d, never sounded so good! Distortion sings like a Banshee, Will buy a set of Mesa Boogie Tubes, for my Fender 68 Custom Twin Reverb Amp soon! Thanks Good people.
Re tubed Mesa 5:50 with these. Old mesa tubes were not bad (they were just 6 yrs. old). These seem to have more snap in the clean and more growl in distortion. LOVED them in this one! Bought a PRS Archon 50 EL34 head that came with JJ’s in both preamp and power section.
Could not believe the NOISE that came from this head when compared with the Mesa! I REALLY wanted the Archon with the EL34’s SOOOO I had to bite the bullet and re tubed the Archon with ALL Mesa tubes.
MAAAN WHAT A DIFFERENCE! there was a separate BEAST hiding in the Archon!! And with the arrival of the beast I also said Bye Bye to 80-90 % of the NOISE!!! YAAAAY!!! THESE ARE A WELL KEPT SECERET BY the tube community.
I installed the SPAX7 in the clean channel of of my Carvin V3M replacing the stock Sovtek 12AX7. I couldn’t be more happy with the results. I am getting a very nice articulate clean. I am considering replacing the remaining valves with them.
A crossbody cell phone purse with touch screen window is a type of purse that has a strap that goes across the body, and a small window on the front that allows the user to see and use their cell phone without having to open the purse. This can be helpful in keeping track of…
An iPhone tripod with ring light is a type of tripod that has a ring light attached to it. This type of tripod is ideal for taking pictures or videos with your iPhone, as the ring light will provide evenly distributed, soft light that will help to reduce shadows and create a more professional looking…
All terrain tires are designed to provide excellent traction and handling on a variety of surfaces, including pavement, dirt, gravel, and mud. They typically have deeper treads than other types of tires, and they may also have special features such as reinforced sidewalls and aggressive tread patterns. 275/65R18 all terrain tires are a common size…
The backs for diamond stud earrings are typically made of metal, and they are responsible for holding the earring in place. There are many different types of backs for diamond stud earrings, and the type that you choose will depend on your personal preference. Some people prefer to have a back that is invisible, so…
Some people may prefer to wear running shoes or sneakers when walking on concrete floors, while others may prefer dress shoes or loafers. It is important to choose a shoe that is comfortable and provides good support to avoid injury. 20 Best Shoes To Wear On Concrete Floor 1. New Balance Men’s 608v5 Training Shoes,…
There are many different types of flag pole kits that are made in the USA. Some are made of wood, while others are made of aluminum or steel. The most common type of flag pole kit is the ground set flag pole kit. These kits come with everything you need to install a flag pole…