Good question.

No, I have not. Right around -10 is about all I can stand (at most). I think I may have had it around -6 before. No way I could listen at 0 for an entire disc. Some discs I can't get any higher than -15.

signed,
busylistening

Pio Elite VSX-94TXH, M80v2s (x2), VP150v2, QS8v2s (x4), Epik Tower