I have a Pioneer VSX-305 receiver. It has one of those large headphone ports. Is this an amplifier? (Sorry if this is a dumb question). If so, how good is it and how do these big receivers compare to ~$200 headphone amps?
They seem to be able to drive my HD 650's adequately well.
Here is a photo for reference.
I'm listening to music played through my phone's headphone jack inputting into the receiver via the red/white inputs.