I hear ya on the Audigy Line In. Do you find it has sort of low noise probably due to grounding, that comes and goes ?
Question: What Lexicon do you have ?
I'm looking for for something better with multichannel inputs and MIDI ... leading towards
M-Audio Fast Track Ultra.
I saw Lexicon Omega, however is only USB 1.1 and is only 16/48, where FTA is 24/96, and $175 vs $400.