OK 1st off why would a Pre amp connect to your USB. 2nd Ive heard of some kinda fucked up shit like this before. Ok what a Pre Amp is supose to go before your mixer. but you can hook it up to your sound card. now I think your talkin about a midi interface of some kind that hooks up to your USB. I dont think Ive seen a Pre Amp that goes into usb. not a real pre amp anyways. show me what you plan on buying

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