Poking around with the oscilloscope on a Dynaco SCA-35 Tube Stereo Amp

[brettezra]

I'm curious.... you're using a 100hz square wave for this test... but how would the volume control with the bass response circuit affect a sine wave?

[teflondon91]

@brettezra 100hz square... its because it has tone compensation circuit to compensate bass loss at low volumes. It's kind of passe now to do. I think it was because of the speakers they had back then may not have replicated bass well at low volume.