I received these headphones from Price Japan. I tried these headphones for first time on Friday 6 May 2016. They work extremely well single ended with the Sony PH3 and Sony NW-ZX1 WALKMAN in fact amazing sound for a portable DAP/DAC I also had a quick try with my JRiver into balanced Invicta Mirus dac into balanced GSX-Mk2 with the Pioneer balanced cable. Initial impressions: Very detailed (Similar to HD800) more bass slam than the HD800 and very euphoric sounding headphone - I thought the SE- Master1 was as if the HD800 and the TH900 had a baby. The SE-Master 1 takes some of the best qualities of both headphones. Still early days so I will provided further impressions down the track.