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RE: Phase inverter tube choice question

The sound improved (not subtly either) by changing the 12Au7 out of the center position and putting in a more linear 12BH7. The only reason I haven't changed the outer two positions is because Bob said it made no difference. Only until recently have "I" noticed - it DOES.

I was never a big fan of the 12AU7. WHY I bought them, I don't know???

Honestly, if this doesn't improve the sound while using the EL34 output tubes, I'm selling the amp. I bought this amp to use those tubes. It sounds WONDERFUL with the KT66's, but unfortunately I didn't want a KT66 type amp.

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