Sun Jun 19, 2011 7:57 pm by BillD
Well, with that low a bias, you are probably getting crossover distortion (the positive/negative transistors shut off before the waveform crosses zero). What I would try is to move the adjustment trimmer a little while measuring and see if it increases (or decreases depending on where your probes are.
It should sound like it isn't there!
There is a difference between hearing and listening...
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