@jea48 ... it's amazing how much diversity of opinion there is on this subject. It makes for voluminous reading. I agree that the power switch likely will outlast me, and have discovered that keeping the amp on perennially likely could result in excessive wear on caps, etc. So, in the spirit of "k.i.s.s." (not the band), I'm just going with the on/off route as per the designer. This issue has been almost as difficult as trying to understand the BJT vs MOSFET debate, which is something I considered before purchasing my new amp. Methinks I have way too much time on my hands.