JJ 12AX7 / ECC83 Preamp Vacuum Tubes (Three Pack)

Nice! Sweet sound

I just received these tubes in the mail yesterday, and I installed them right away in the preamp section of my Jet City 20w combo amp (JCA2112). The tubes in the amp previously were marked "made in china" and were 12ax7R, which I think must be the same as the ax7s, do to their pretty high gain tendency. I picked the JJ's at the recommendation of the Jet City's product support guy, and based on some positive feedback from fellow musicians. I've only had the tubes in for about 36 hours now, but last night I put them through about 3 hours of gig time and they sounded great. The item description that Amazon provides is really pretty right on- these tubes increase clean headroom nicely. The original stock chinese tubes broke up almost instantly, and while that was fun for heavier rock, I've always been displeased with the lack of clean tones my amp could provide. The JJs changed all that in a hugely noticeable way. I'm reserving my final judgement for a few weeks from now when they've had another 10 hours of playing time, but here's what I've noticed so far: -Great headroom and very musical, lush breakup- not harsh, jagged distortion, but creamy, bluesy drive. -tight lows, very pronounced mids, and a nice, chimey high-end that isn't brittle at all. -The note separation that the increased headroom gives is really great, and even with the preamp gain cranked, lead runs and hammer-on pull-of stuff has a nice, clear quality to it that allows notes to cut through the breakup in a really cool, vintage sounding way. I guess I should also add that while this 3-pack isn't eligible for Prime, I received the package in 3 days and it was very well-protected. I would recommend the JJs, especially if you have an amp that comes stock with chinese tubes. These really do make a difference in tone.

Replaced my Fender Blues Deluxe reissue amplifier pwr tubes with jj 6l6's A very noticeable difference. So I decided to replace my preamp tubes with these even though I don't think they were faulty. Even more noticeable difference. Worth it. 😛🤟

For My Fender Custom Pro Reverb! Absolutely Love New Tubes!

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I recently bought an class D amp that had 3 of these amplifier tubes. I noticed the amps output just didnt have the clarity or ooomph so i figured the tubes are just weak. I was right, and now the amp is powerful , clean and has the oomph i need.

Easy install, but don't sound quite as good as the Mesa Boogie tubes.

These JJ pre-amp tubes are perfect for my Park 1206 !