Sorry it took me so long to reply, I've been away for a few days. I'm using a Marantz AV-7005 preamp that has it's own headphone section. The Denons do sound quite good with it as the Marantz is no slouch in it's own right. I'm just curious as to what my options are. I rather like these cans, bass is very good and the highs have plenty of sparkle to my ears. They are a bit loose fitting and I have a rather large head but its not bothersome and doesn't affect the sound.
Regards, Sam