Anything but a fragile speaker. A dummy load will work. If you have a 120v incandescent lamp, that would be better. Just tap it at first to see if the amp draws excessive current.
Is the DC the same on both channels?
If you touch a load across the output, does the DC drain off or does it try to pull excessive current?
It pulls 1.1a at idle and 2.1 with a load
What's the voltage across the load when connected?
What is the load?
Don't leave it on long enough for the outputs to heat up.
What is the load?
Don't leave it on long enough for the outputs to heat up.