i was listening couple of months ago to QA Transdyn at thinkers place with SR-009 and SR-007MK1,it was overall excellent sound ,some sort of meaty/warm detailed presentation with lots of power.Other people who heard it liked it quite a bit.I have been at he's place many times and heard lots of different stat amps and this is one of the best .Phenomenon phones are already in third generation and are coming in next month from Russia ,i will report something about them.