[bloosnail11]

Recently, I purchased a Tube Magic D1. After I first received it everything was well, but now it has started to develop a buzzing noise in the left channel. The buzzing noise seems to grow louder the longer the Tube Magic is on. Additionally, the buzzing noise gets quieter if I turn on the Direct button. When the volume knob is very high, the buzzing noise actually goes away and is replaced by hiss. I tried optical and USB and the buzz is still there. If I turn off the Tube Magic, the buzzing noise actually lingers for a bit, even after it's off. I tried a pair of AKG K701 and a pair of HD 555 and it's still the same. I really don't have a clue what could be causing this. The 14 day warranty is almost up, so I have to fix it now or I'll be stuck with it. Thanks.

 

[Ultrainferno]

I advise you to post this in the D1 thread and to contact Ryan of Mav-Audio, he will help you for sure
 
http://www.head-fi.org/forum/thread/446764/maverick-audio-dac-amp