Test conditions:
input at both channels 8 ohms resistors at both outputs
Channel 1: Input
Channel 2: Output
Channel 3: Negative rail
Channel 4: Positive rail
Startup behavior
.
Shutdown behavior.
Clipping
More clipping (looks nasty)
2OkHz
ldt
32kHz
e
r
200kHz
.
Comparing the rise time for 4V and 60V output
Supply ripple
This is the supply ripple at full power.
After a good warm-up I ran at full power for 15 minutes just to se the heat protection in action. The heat sink turned hot as H... you could not touch it more than 1 sec. But I did not see any protection in action so I chickened out and turned the volume down .