Anyone A/B'd Rega Ear on HD600's to other HP amps?

With the arival of my first daughter, my beloved hi fi consising of Talon Khorus,EMC1 CD Aloia pre,Alcheist amp Etc.are getting less used and my 'phone rig with Rega Ear and HD600's connected to the tape out on the Aloia(with the inductive PS) are getting used more. I have the Cardas cable for the 600's. Any suggestions on how to tweak this? Has anyone heard the Ear v/s other headphone amps? Is there a way to better the Ear with a power supply upgrade-it comes with a cheap wall wart and doorbell wire! I am new to this headphone game but am enjoying it so far-this is a great sonding combo, but we all know how this hobby is, as we are always seeking better! Thanks for your help! Scott