Hi I just got the Z and while I only have 3 hours on it, it seems to make lots of noise for loading above 500 - 47K ohms. On my Pass XONO (DIY) all loadings from 10 - 470 are fine, I think it actually sounds great at 470, but I wanted to try 870, 1k and 47K, but when I change the loading to these values, I get lots of loud "rustling" noise as I cue to the tonearm over the record. Is that just strange? I noticed you load it at 1000 ohms and everything is fine. Wonder if my has a defect?