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Your cart is empty.The jj ECC803 is a long-plate version of the standard 12AX7, the longer plates give the tube higher gain, it has a rich and full tone with creamy distortion that does well in any 12AX7 application. Spiral Filament for reduced microphonics. Jj tubes are known for known for their high quality, durability, and their excellence in tone, formerly produced by Tesla, jj tubes are still made to exacting standards, they work well in all applications.
J. Werner
Reviewed in the United States on January 1, 2018
If your looking for a good high gain tube, this might be it. But I replaced my V1 in my JCA 50H with this, and it's no different than the stock preamp tube. Eurotubes recommends these for smoother lower gain tone applications. I have to agree, it's no Tung sol 12AX7. That tube gives gain. This one not at all. I'll be replacing this with either a Tung Sol, or a Genalex. EDIT: I tried a tung sol in the same amp, and it was too much tube. I have been switching the preamp tube rotation around , and this likes being in V2, between genalex gold pins. This is growing on me, as I break it in. I may get more of this, in the gold pin variety, for the last two positions. I have a mesa that tungsol can go in.
MuddeeWaters
Reviewed in the United States on May 28, 2016
Sounds like a five star.. I've been waiting until another JJ tube broke before I made this assessment.. I really like the JJ's in my low power class A amps.. without dragging this out. I've had 5 JJ's physically break and one was smashed in the box when I purchase one from Amazon (they sent me a new one!).. one just crumpled in my fingers, leaving the base in the amp and the broken glass in my fingers.. The 6V6.. the peace in the center went missing finally 6L6 .. In fairness, I've been tubing my amps with JJ's for a long time and this is relatively a recent situation.. and I would never complain about the tone because they are even.... musical... but now a days I guess I have to say be very delicate which I have always been, even not allowing my finger prints on the glass. I have never had tubes break in this matter and I'm talking way back to my 1st amp, a SUPER BEATLE amp. Over the years I've had my fair share of "blow-outs" but no physical problems.. However I will still buy JJ's and take the chance because they sound perefect for my applications..
JB
Reviewed in the United States on March 15, 2016
I bought a Bugera 333XL Infinium 212 combo a couple of years ago which my two sons didn't really care for. Lot's of gain but the muffled mid-range tone emphasis the amp delivered didn't appeal to either of them. After replacing all three preamp tubes (12AX7's) with the JJ ECC803 the mid-range "nasal" tone isn't there anymore. Add an equalizer in the effects loop (not in the input chain - too much hiss) in a "smiley face" arrangement to scoop mids, brighten higher freqs and add base punch and the 333XL sounds much more open. Turn the on board amp tone control to about 1 O'clock to get back a bit of the mids and you've got a Marshall kinda thing going on the crunch channel. I also use a pair of Eminence Governors in a 212 cab as the open back speakers on the 212 don't cut it for metal.
RaVen
Reviewed in the United States on December 1, 2015
This tube is a beast! Really opened up my VHT special 6. Much better gain structure and really opened up the low end and crispy mids. I've also tried this in my vox ac4c1 in the v2 slot and it improved the top boost feature immensely. Just a word of caution,this tube is about a inch taller then standard 12ax7 tubes. Make measurements as needed because this will not fit in tight amps. (Would not fit in the v1 slot on my vox) I plan to try 2 of these in my egnater tweaker as well.This really brings out the bluesy tones in your amp. You will be very impressed with both its sound and quality!
Joshua Amerman
Reviewed in the United States on December 2, 2014
I was a little bit apprehensive at first when trying these tubes because of the price, but it was totally worth it. I play a Vox AC4HW and it totally brought this amp to life. I was actually considering selling the amp before I put these tubes in. Previously I had a newer set of JJ 12AX7's in there, which I thought sounded good, and they were by no means bad, just not there. These ECC803S's just added a fidelity, clarity, more chime and robustness to my notes that scratched my itch. I'm no longer selling this amp. Both overdrive and cleans sound great, I play an Epiphone casino with Gibson p90's and a standard telecaster. Both sound phenomenal through this amp. All in all, I'm super happy, these tubes don'tâ get enough love and praise. A lot of guys have reported using this tube in the V1 position, which I did try, but personally preferred both tubes in my V1 and V2 positions. Enjoy these tubes, they are worth the price.
C. Jackson
Reviewed in the United States on November 26, 2014
I've been a fan of JJ preamp tubes for a while now; it was them that fully weaned me off the idea that NOS is always better. In particular, JJ's spiral filaments lead to an occasionally miraculous reduction in noise. That feature is somewhat obviated by the brutally high gain on this tube, but if you've got a properly shielded guitar with properly wired humbuckers and you're not standing 2 inches away from your speakers, it still sounds pretty surprisingly quiet. Even the best vintage tubes I have still get parasitic oscillation at extreme levels, and this one is completely clear even when it's pushed far past levels I'd actually use. The gain is extreme. My clean channel has gone from sparkling to crunchy, and my OD channel has grown a new set of teeth. I can still dial the guitar volume back to get clean, warm, and rich. Compared to the ordinary JJ ECC83 the sound is much more thick and saturated, but it is noisier. For my style of music, that's acceptable. I haven't yet tried to put it into my V2 slot so it only affects the drive and not the clean, but it has my clean sound like what I want it to sound like. I don't think I'm going back to regular 12AX7s.
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