Of course, there's always the Stevie Wonder test.
So tell me again why anything else matters?
Hook up a dummy load, your function generator and a scope.
Set your bias/balance for as little a crossover notch as possible.
Look for hum, instability, etc.
Make sure it works: signal in, signal out.
Make sure that the signal looks like an analog of the input; no visible distortion.
Measure actual gain if you care.
Put in a 1kHz then 10kHz square wave, trim the NFB if needed to square it up or stop ringing, if it exists.
Measure voltage into your load at clipping if you care. Otherwise look at how the amp clips. Take pictures of the scope screen for posterity and possibly to ask questions.
These are sort of tune up/checkout tests before hooking the beastie up to an expensive speaker system.
If it works, put on a record, sit down, shut your eyes and enjoy!
You can test the biotch for three weeks to have reams of results and gigabytes of files. Who cares?
Won't make it sound any better.
Trust your ears. Nothing else really matters.https://www.google.com/url?sa=t&rct=j&q ... C_5DggNfrA