I'll throw my hat into the ring.
Headphones: HiFiMan HE-400, Sennheiser HD-600, Beyerdynamic DT990 Pro
Amps/DACs - JDS Labs O2 + ODAC, iFi iCAN, Bravo Audio V3, JDS Labs C5
Sources - PC with Hi-Res FLAC, AAC and ALAC, Toshiba SD-3960 CD transport
Portable Players - HiFiMan HM-700, iPhone 5S, iPod Classic 6th Generation 120GB through Pure i-20 DAC
I have a ton of great music (somewhere around 200GB all total) to test these cans with and my recent...