Hello, I have a couple of XAP units, I want to pass PC audio through one of the units (so it's PC -> XAP -> amp -> speakers) but at some point I get loss of quality and the sound comes out echoey and generally distorted (vocals quieter than should be, some instruments are really loud while you can't hear others at all, etc.). The results are exactly the same for both XAPs. I have tried a few Phoenix connector to RCA/3.5mm jack cables and the results are the same for all of them (admittedly, I have made those cables myself but they worked in other applications [mostly for outputs] so, while it's possible that it's the cables that are causing the problems, I believe that it's unlikely. There doesn't seem to be any settings for line inputs, so I am baffled by this. Anyone has any ideas?