i'm not aware of the original amp this is based on... there seems to be a few clones of this on the usual places
i assume it will be pot luck on how YOUR unit actually sounds like
but I am a bit bemused by the fact it has dual vol. knobs... effectively L/R trimmers but the POWER button gives me nightmares
anyone who has worked industrial automation will recognise this button in many colors as a common thread in many many factories around the world