I had a 2080, the explaination I got was the synths output is converted at 18bits, true of the XP60/80/30 not the XP50/JV1080 (which are 16 bit) this produces sample aliasing, distortion problems as the sample calculations are converted from the synths internal resolution to a different one. I dont understand totally, but the 2080 etc are clearer in the output but produce this god, damn annoying problem. Dont bother, Roland wont help, get a XV3080/5080 and feel ripped off like I did!