Tube Amp Archive

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But infortunately im too much curious, so i tried anyway.

When i switch from standby to on.. Amp starts to hiss and squeal .

Il switch immediately to standby.. No problem.

I think something in ot is not optimal...

My 5 cent

They answer.

Its better dont switch..

Thank you for reply.

Do you have any schematic to understamd?

Good morning Guys,


I tried to contact koch support without any luck.

I buyed this amp recently and noticed switch is not present but pcb is ready(with 2 cuts on the inferior layer, 2 tracks cutted)

What about it?