In article ,
says...
From your question, I wonder if you have any idea what a PITA Windows
development is -- especially when it relates to dealing with hardware at a
low level.

1994 was a long time ago.

Sorry, all sound cards that I know of are AC-coupled, with a roll-off

I've never studied them, but I would expect this to be the case. And even
if it were not, I can't imagine why the DAC would be designed to support DC

Hmm. I'm not sure how to design one that doesn't.

Usually, all that's necessary is to locate the output coupling
capacitors on the sound card and bridge them. This may be easier with
older Sound Blaster 16-era sound cards, before they all went to SMT.

-- jm

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