@Katfnc
Thanks for the nice response.
Thinking about it a little further, though, I’m not completely certain as to the correct interpretation of Spectral’s reference to a "0.5 volt range" of the "DC protection servo." And a good deal of further research I did failed to shed any light on its intended meaning.
One interpretation, which was the basis of my previous response, is that the design incorporates a protection mechanism that will limit any DC that may appear at the output of the amplifier to a maximum of 0.5 volts. That would be fine.
Another possible interpretation, though, is that the "protection" will only be effective for DC voltages at the amp’s output that would be no greater than 0.5 volts in the absence of the so-called protection. Under that interpretation the "protection" would essentially amount to a performance enhancer, as I see it, as opposed to providing effective protection against secondary damage that might result from major failures.
It might be worth contacting Spectral and asking them to clarify exactly what that spec means.
BTW, that same spec and wording appears in the description of many of their amplifiers, not just your DMA-260.
Best regards,
-- Al