I've tried wiring directly from phones 1/4" out to 1/8" input or composite input in the back of the unit. I've also tried a Bluetooth adapter hooked into different ports of the A/V receiver.
To hear the HD-200 at a decent volume I must turn up the volume to +10 on the controls. Every other device I use I keep the unit at -30 and it's plenty loud.
What can I do to not need to crank my A/V receiver to get the HD-200 at a decent volume output? At +10 there is a noticeable static noise coming off the speakers that makes me uncomfortable.