@audphile1 , both are in the range and hence pulling the hair.
Not to be anal about it, but I was also checking the cost of electricity to run the amps based on their power specs
A48S:
Idle = 200W
In accordance with IEC62368-1 = 220 W
Stand-by = 0.3W
P-4600
Idle = 94W
In accordance with IEC62368-1 = 250 W
Stand-by = 0.3W
I told AI to calculate the monthly costs based on daily usage of 0.75hr of idle time and 3 hours playing time and here is what it came back with:
| Amplifier | Monthly Cost |
|---|
| A-48S (200W all the time) | $3.60/month |
| P-4600 (94W idle, 250W playing) | $3.94/month |
@westcoastaudiophile , do you see this similar difference? How much heat is generated in summer?

