Originally Posted By: Micah
...it seemed like it was outputting TWICE the amount of bass!!! I supposed this could be because the MP3 player was turned almost all of the way up compared to the Denon only being at around 2/3rds of the way up, eh?

Oops, no one said to turn your player down before starting the test?

Yeah, almost full headphone level is way more voltage than 2/3rd of line level. -- Although some newer players do change the impedance they are driving and switch to line levels when lower than headphone impedance is detected. Still that would put out full line level, which would be like having the receiver at -0 dB.

Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris