Probably OK on most speakers, as long as it does not alter as the devices
heat up, and hopefully there is some kind of protection against excessive
currents at DC. I mention this as I had a Memorex brandreceiver, obtained
from Tandy which sounded great, but also had the ofset you mention, and a
few years back one channel died and put some large volts and amps through a
speaker and welded the cone to the pole pieces.

Brian

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From the Sofa of Brian Gaff Reply address is active
"Eiron" wrote in message
...
Hi experts,

How much DC offset would you consider acceptable in a power amp?
What can you do on a rainy Sunday afternoon? I was poking around inside
an old Rotel RA-970BX amp. It works OK except that the DC offset is
about 100mv and 50mv on the two channels, which seems rather high to me.
There is no adjustment, except for bias current, so any tweaking would
probably have to be adjusting the current in one of the long-tailed pairs
by swapping resistors.

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Eiron.