Right now I'm figuring out what which Fiio portable amp to pick up. Im using the old Fiio E1 through iPhone 4 and it gives me moderately louder better sound by bypassing the internal headphone amp. I may shoot for the E11 and daisy chain it with the E1. 

Oh ok, I didn't know your pair were still new. They do require quite a bit of burn in, just leave them playing over night at a moderate volume or witness the sound change. Try amping them from a HI-FI receiver to speed up the burn in.

yeah, the headphone cable went bad about a couple months of me owning the headphone. I was a subtle change but definitely noticed a change. These are pretty dark sound headphones so there should be no bright spikes.   Just mashed that button in and pull on the cable. Its pretty hard, but the...

My problem was by the ends of the cable where it meets by the jack on the headphone. I looked in-between those ridges and found the outer plastic was cut. I cut the wire to replace with my own jack from ebay. After cutting the cable i noticed the copper oxidized and leaked on the cotton membrane...

For comfort get the velour pads it deepens the bass and cuts very little of the brightness and has a deeper opening. I had an overly bright problem too, and found out my cable was faulty. Inspect/replace your mini xlr cable, its pretty crappy from factory.

I used all three extensively and my conclusion is Audirvana is the superior player by far. Bitperfect is mainly for auto sample rate switching. Fidelia was quite decent I used it for a long time for flac files. But Audirvana sounds excellent, works with iTunes library and supports SACD(DSD) and...

My macbook powers them up fine just the bass is a little thin/flabby without an amp. BTW I noticed the k240 studio require amped burn in to relax the sound. The headphone sounds compressed from factory. Got them for $67 from amazon. I think its the best cheap headphone I could find other than...