On my recently bought ESQ-1 there is a noise emitting in the background everytime I push a key. It is there even when I shut off all three VCAs and it is more prominent when the filter is wide open.
Is this normal? It sounds like a digital noise and it sometimes changes pitch on different keys but not always.
I have done a hard reset with no change and I also listen to the outputs directly from the output buffer TL084 and the noise is still there.
One thing I noticed is that if I shut of all VCAs the noise is there for a about halv a minute and then gradually disappear. When I turn on the VCA the noise comes back.
I would highly appreciate If any ESQ-1 owner out there could test their machine to see if you also have this noise or if you know how to fix it.