Tube Amplifiers
Bud asked:

Just curious if you pay the extra tubes of channel, pipe or any other major brand change and improve? my sound that much?


2 Comments so far

  1. freetarot on August 22, 2009 10:36 am

    It will likely make a difference.

    If a producer makes 1000 “identical” tubes, you’ll going to find they are not “identical” if you check every one of them. The manufacturing and component variances pretty much dictate this. While all of them will “work”, only a small percentage will have specs that are right in the “sweet spot” that gives you the best tone.

    Groove Tubes doesn’t make tubes — what they do is check vast batches of tubes looking for those in the “sweet spot”. Those few tubes become “Groove Tubes”. They cost more because many tubes are eliminated during the process — which drives the cost up.

    So — you could buy generic tubes and they’ll sound good. You might luck out and get some that are matched enough to sound great. Or, you could buy Groove Tubes and be pretty much guaranteed you’ll get tubes that sound fantastic.

  2. Kurt Moss on October 16, 2009 10:45 pm

    I just replaced the tubes in my old Deluxe. I found some 40 year old tubes made in U.S.A. It’s night and day. I found some 7025 str Ruby. They replace 12ax7. V2, V3 and V4 are critical. I took the last tube out for more gain. The 6v6 tubes are rca. A 12ax7 can go in the V6 phase inverter slot, but your bias will be higher.Don’t ever mismatch pwr tubes because of plate voltage.

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