Ended up with a Creek OBH-11 Headphone amp and I hooked it up thru zone 2 (thanks for the tip). put in a cd and the bass response sucks....is there a way to boost the bass this way or is it a problem with the headphone amp? I have heard that the power supply that is sent with it is terrible and should be replaced at all costs(within reason of course) but you would think for as much cash as that thing is it would come with a power supply not made for the trash...any suggestions?