The Senn's would be fine with your gear. I use a pair of 580's on a HD radio and before that an Onkyo stereo receiver. If I can't go to sleep I will put the phones on and listen. I use my 600's with an X-can amp. The reason I got that rig years ago is my Krell didn't have headphone jack.

If you wanted to try a pair with no risk some of the online dealers will allow a 30 day return. www.amusicdirect.com used to be a Senn dealer but I have not looked at their site in a while. If you do this keep in mind Senn's need a break in period. I usually plug mine into something and let them play over night and while I'm at work.