I recently purchased a discontinued set of Hifiman HE500 headphones at a bargain price.I've owned a number of high quality headphones in the past such Sennheieser 650's,Beyer dynamics and Denons but was never impressed by their sound and always gravitated to my Axiom M80's.
At the present time the Hifimans are being powered by the headphone output of a Harman Kardon 3480 125 WPC RMS stereo receiver. The sound is truly fantastic to say the least.So much so that I find myself listening to them more often then I do to my Axiom M80 speakers.I'm just wondering whether I could further improve the sound by purchasing a quality dedicated headphone amp to power them.