Krell KSA100 clone from Aliexpress bench test 

Here is a detailed bench test and comparison to the original design.
0:00 Intro
0:11 Build quality
0:39 Bias check
0:50 1kHz into 8ohms
1:13 Rebviasing
1:41 Thermals
2:04 1kHz into 4ohms
2:30 Bandwidth
2:45 50Hz square, sine
3:08 Summary