Krell KSA100 MKI power consumption

Jsd52756, 7 amps at idle for the KSA 100 seems about right. Dont't forget that the KSA 100 is class A all the way to 100 watts. The KSA series of amps did not have a sliding or sustained bias outputs as the newer models.

I know for a fact that it consumes a lot of power at idle.

Jsd52756, the FPB300cx uses 60w on standby, 175 at idle and 1700w at full output.

We assumed a North American Standard of 7amps x 110v = 770 watts. Take a look at another 100w amp and see what the current draw is at full output, because in Class A, your amp is at full output at idle...that is why it gets so hot because it need to dissipate all that power when not driving a load.

My old (100w Class A) ML 20.6 amps drew 500w each at idle for a total of almost 10 amp (1000w). Since the Krell KSA 100 is also 100w Class A, 700-800watts at idle does not seem that far off.