Sailcappy, has anyone recommended installing a current inrush limiter? This is a device (goes inside the amplifier) that when cold has a high resistance and as it heats up, goes to a low resistance. They come in different current ratings; for example in our MA-1 we use CL-30s, two of them, which limit inrush current in the two AC circuits in the amp. They prevent the power switches from being damaged, and there are MA-1s out there made back in 1987 that still have good power switches, so these things work.
In your case they would give the power supplies a little more time to charge and obviously could keep the inrush current to an acceptable level. I think this would work much better than a long power cord, and if there are no inrush limiters in the unit, there totally should be...
In your case they would give the power supplies a little more time to charge and obviously could keep the inrush current to an acceptable level. I think this would work much better than a long power cord, and if there are no inrush limiters in the unit, there totally should be...