yeah, I agree b_limo - you’ve been thru 4 units with exactly the same issue. Time to get the refund & move on.
I recommend the NAD 356 DAC + integrated amp:
http://nadelectronics.com/products/hifi-amplifiers/C-356BEE-DAC-Stereo-Integrated-Amplifier
or, the Wyred4Sound mINT DAC + integrated amp:
i've heard good things about both. My brother used to own NAD & it always punched well above its weight. FWIW.
I recommend the NAD 356 DAC + integrated amp:
http://nadelectronics.com/products/hifi-amplifiers/C-356BEE-DAC-Stereo-Integrated-Amplifier
or, the Wyred4Sound mINT DAC + integrated amp:
i've heard good things about both. My brother used to own NAD & it always punched well above its weight. FWIW.