Just got the hm5 pads and it sounds a lot better than the srh840 pads. The comfort is way better than the stock pads, softer, better seal on my ears. The sound is quite impressive, deeper bass, larger soundstage, smoother upper mids / highs, it's definitely more balanced now. But to get good sound u need to rotate the pads in the right angle though.
I'm using a very budget setup - hifimediy u2 async dac + smsl sap lll, very good sound so far.
Edited by rhiga - 7/11/14 at 7:23pm