I'm looking for an inexpensive line-level amp and attenuator. What I want to do with it is insert it into a signal chain so that when the signal is too loud I can turn it down, and when it is too quiet, I can turn it up. I've seen some products, I just thought you guys probably know even better.Here's the problem: My E-MU 0404, which can pre-amplify signals well doesn't handle over-powering well. My Audio 8 DJ, which has no pre-amp, is maybe 20dB quieter. There's a range of signals for which the E-MU is too loud and the A8DJ is too quiet. This will be used in live performance contexts. I can't simply record and change gain afterwards.I'd prefer RCA ins/outs. 2 channel, ideally. More is acceptable.