The Rapco TDI-100 Consumer-to-Pro Interface converts any stereo RCA output from tape decks, CD players, VCRs, or DVDs into a single channel balanced mic level signal for use with mixing consoles. Most people don't know this, but it also works the other direction - splitting a microphone signal into dual stereo unbalanced line-level signals, with independent volume controls. When used as intended, the TDI-100 also offers separate left and right volume controls which make it perfect for split-track background tapes and CDs. If you've ever wished for just one more channel on your audio mixer, this is a perfect way to get it.