I get distortion from my Heil HC3 and from LIN input if MIC+LIN is on. Even if I unplug the MIC from the front panel. I don't hear distortion the in TEST mode. So I cannot use recorded audio from my Hard Drive for now I guess. Anyone have any pearls besides buying a KDVR3? I don't think I can get one installed before CQWW (ha ha). 73, Steve WU9B