Yes. The Driver Tubes(6922)must also be biased, as per ARC instructions.
How do you bias the 6922 tubes in ARC VT 200? HELP
Could some Audiogoner explain in simple English the steps in biasing the 6922 tubes in the Audio Research VT 200 Power Amplifier? I have read the Audio Research directions regarding this procedure, some part seems straight forward and simple, whilst other parts are complicated. Could you provide some simple steps to follow. I have already completed the biasing of the 8 pairs of 6550 power tubes, though I will welcome some tweaking pointers.