Soundhound -

Thank you for the response. I did an experiment in which I switched the amps into "music-mode" and power-cycled only the amplifiers - the transient is substantially reduced.

Is the amp output muted in the "music" mode or the 12V remote mode? Would it make any sense to strap the amps into 12V remote control mode, and wire up a delay circuit to attempt to power-cycle the amps at the appropriate time?