Greetings - Newbie here. I've got an old homegrown PC (Athlon XP 2700), Audacity, an SM58, an SM-57 and an AT-2020. Just recording vocals, guitar & mando. Perhaps some keyboards. If I watch my room positioning, I can occasionally get a decent recording of my wretched performances, but there's more background hiss than I'd like (samples at http://oldWithoutmoney.com). I'd like to think that it's the M-Audio MobilePre that's the weak link here and, if folks agree, I'd welcome suggestions for new or used cost-effective upgrade for the mic preamp / DAC part of the chain. 2 channels ought to be plenty, and the AT2020 needs phantom power. I could see spending $500 if the end-of-year bonus is kind, but $200-$300 is more realistic. And, if it matters, I have a FireWire card in the PC. Thanks kindly. - Richard P.S. - If folks don't agree that it's the preamp, what might be introducing the hiss?