Works but distorts quite often

Mixes the two stereo channels just fine but has a lot of distortion when amplifying either source either outside or by its own gain knob. I was running 64 Ohm headphones which arent particularly hard to drive but do require a little more power and I could not get to a decent volume without a lot of distortion. I dont know how it would perform on batteries but i was plugged into the micro usb power and it would sometimes have static noise on idle without sound until i turned it off and on again.

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