Chad- Hello!! I already answered your question. TC Electronics M300, $200 at Guitar Center. You can plug any 2 line inputs from a mic preamp or DAW into the 1/4" ins of the M300. That signal comes out as either two 1/4" line levels (ins and outs are balanced, BTW), or by S/PDIF. S/PDIF is pretty easy. It's just a way to transmit 2 signals in the digital domain using basically one RCA male to RCA male cable. Get at least one well made digital transfer cable. Then the unit sending the digital signal and the thing receiving it must be matched for transfer rate and density. Try 44.1kz- it's CD friendly. Some boxes can have a master/slave unit tendency. (isn't that antiquated? I hereby emancipate all of Mr. Q's units, give them $50 and a camel) .
The M300 is pretty good at both analog to digital, *and *the reverse, with S/PDIF in and out, as well as midi. Aside from that, you get usable reverbs, a rudimentary compressor, a mediocre de-esser, good delay, as well as flange, slapback, pingpong. Really good A-D and D-A convertors are $600 and up. I've had good luck with Lucid AD9624. But- the M300 is as good at A-D conversion as the other cheap convertors, and you get a very useful effects box from a respected company known for high end FX, thrown in. I've used it as a cheap A-D box for a couple of years. It's quiet, makeup gain is usable, to a point, and it has never failed me. What's not to like? Best $200 box I have.-Richie