The new ADC0804 is running cool, that's good news!

I'll measure around the ICs tonight and report.

> Can you get the oscillator to play over a wide range of frequencies? If you crank the filter resonance, does it oscillate? Can you hear any sound from the channel through the audio output? Does it respond to sliders or levers?

Unfortunately, I only hear the normal hum in the background, I had tried the filter auto-oscillation already, but nothing, total silence. Moving the faders I hear some digital noise and some clicks pushing the buttons

Thanks!