This unit was used with a bench power supply, so the stock power supply
has never been powered-up except to verify operation. The amplifier was
never pushed hard, just played occasional music for thirty minutes to
an hour at a time maybe a once or twice a week. Works like new, no
dings or scratches or anything. I have two of these listed, they were
purchased a few months apart and came with slight variations in power
supply, so I've listed them separately. The amplifiers look identical,
the only variation is the power supply.