Post

the sound output on my delta cep a shouldnt be outputting dc voltage? correct?

-- coyoteculler

Not necessarily. Some devices will output DC offsets via the audio, with the best-known example being the ARP 2600. It's been blowing up speakers for 50 years! But there IS a reason for this, and it's because these were built to also function as modulation and/or complex CV sources. So...annoyingly...there's a rule of thumb amongst some manufacturers that their stuff has to have that DC coupling, too.

Best solution, as always, isolation transformers.