Krell KSA-200s First Time Use

The Krell 200S is designed to be used with a 20amp circuit, but what you are describing is IMHO not attributed to using a 15amp supply. The 200S at idle, only consumes 150 watts, therefore, the 15amp current supply should not be starving the 200s. Something else is causing the amp to shut down. If you can try the amp with a 20amp circuit, that would confirm my suspicion.

Audiolabyrinth, the Krell KSA-200S manual states that the amp is designed to be used with a dedicated 20amp circuit. However, I believe that the OP’s problem is not attributed to him using a 15amp circuit due to the fact that the amp cannot even turn on at idle, plus the existing 15amp circuit does not trip. A 20amp supply is required for the amp to operate “optimally” under a difficult load requirement.

A 10g dedicated line with a hospital grade receptacle etc etc may improve on the sound, but is not the source of the OP’s problem.

Audiolabyrinth, the 20amp supply is required when the amp is required to provide large amounts of current under load. The OP's problem is that he cannot even get the 200S to stay on at IDLE.

My former KSA 250 would operate with a 15amp circuit, although peak performance was obtained with use of a 20amp circuit.

If the OP amp was trying to draw too much current from the 15amp circuit, why does the 15amp circuit trip?

The best advice is to give Krell a call or try the amp with a dedicated 20amp circuit to satisfy Audiolabyrinth's concern.

I agree, the KSA 200S does not need a load attached when powered on, it even states that in the manual.

Question for Audiolabyinth. Why doesn't the OP's 15amp circuit trip if the load is too great? The KSA 200S at idle only consumes 150 watts.

I hope the OP updates us on his progress.

No, I was asking if there was too much draw on the 15 amp circuit to cause a voltage sag, why wouldn't the 15amp breaker trip?