Tube Amp Archive

Surprised there isn’t more interest in this thread. Thanks for posting this and documenting it!

Other then JJ brand, in at least 20 years I have never seen a NEW strong testing 12AT7 out of EH/ Russian made stuff! I always end up searching out NOS ones for use in long lasting reverb driver circuits. I think I’m at the point where I’m only going to buy NOS or JJ. Never had a bad JJ… or a bad s...

Y’all have motivated me to reach out to them and see if there’s anything they can do. At very least I’d like to hear their thoughts.

Not sure about my exact motivation for this post, but I think it comes down to a blend of venting and warning. About a year ago I ordered about a dozen Mullard 12ax7 from TubeDepot and paid the extra couple dollars each for the “low noise and microphonics” binning on them. I’m finally getting around...