hi every1 , im experiencing a problem with my e30 ... as soon as the dac is connected to the pc for either power or usb.
there is a really high pitch sound .. like a ground loop but the sound is different , i would compare the sound as a coil wine sound from graphic card.!?!
its only happening in games , or hvy demanding apps . and as i navigate ingame , the pitch sound change tones.
when i am using spdif , its completly gone.
When i switch to spdif but the usb still connected , the sound is still there. I have to unplug the usb completly to get rid of the sound. Ive tried different usb and its all the same.
The dac dsnt even need to be power on to ear the sound ..
So basicly to get rid of the sound , i had to use a usb phone charger for power and spdif from pc...