Just like Robbo99999, I have the G6 for about 4 months and I have never had any problems, I use an HD558 in lo gain amp, the volume in Windows I always use at 8 to 14, on top of that it already starts to bother my ears for some time . I already had some creative products, SB Live, Audigy 2 ZS, X-FI Titanium Fatal1ti pro and HD Titanium, I never had any problems with these products, together with HD Titanium, the G6 were the best dacs I used, I know they exist better, but the G6 has served me well. Regarding the volume in 79%, if it is used in the headphone output, I believe it is impossible to withstand such a high volume, I believe that for many 40% it would be a blow to the ears.