Velleman 200W POWER AMPLIFIER MODULE (VM100)

so this is the velman 200 watt discrete power amplifier k80 60 that's the picture of it this is the real deal the real thing all set nicely with its heatsink and everything else it's taking a very little while to do this but there they have it 200 watt discrete amplifier by velma nice and ready to go question does it work answer find out in a second so this is the velman 200 watt discrete amplifier the k80 60 and this is wired to the terrible transformer it's been powered up by the variac over here and what we're gonna do is increase this voltage to 120 volts what can we hear come over here think i'm just going to turn the now the volume is down so we come back over here and we set this to 120 volts that's so much of an annoying sound let's change things a bit now then i know that this potentiometer here is right down wow that's my it's going to square triangle sorry sawtooth wave let m