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In Reply to: RE: PL Prologue autobias adjustment ...part 2 posted by Chuck Y on December 27, 2015 at 07:52:49:
I put in a brand new quad of EH 6ca7 and with the screw turned to max position I could only get 340mv. So, the old tubes are probably fine. I guess i'll call Upscale Audio next.
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- RE: PL Prologue autobias adjustment ...part 2 - rotarius 17:50:38 12/27/15 (0)