Hello I have had my AD's for about 3 weeks now. I figured d they are a superb headphone, the sound seems to effortlessly to project into your head. The sound is lush, vibrant. The level of detail is amazing and they seem pretty transparent to my ears. The treble is perfect, seems to compliment the sound. Furthermore the bass is great, it's there but not overwhelming. Overall the sound is neutral and that is what I desire out of a set of cans.
I am using stock tubes for now, and after 80 to 100 hours of burn in, the soundstage seemed to open up and the overall signature sound seemed more lush, the midrange seemed to open up. The highs seemed smoother, more pronounced. My course is a old Kenwood cd player, which goes into my pioneer Reciever/ dac 24 bit to 192 , then my lyr 2. I am hoping to get a better schiit audio dac ( either the Gungnir or the Uber Bifrost),but for now my system sounds great I have listened to Mozart, Beethoven, Bach, Tchaikovsky, Frank Zappa, Led Zepplin, Eric Clapton, Sex Pistols, Vangelis, Tomita, Moody Blues, Uriha Heep, Dave Brubeck, Thelonious Munk, John Coltrain, Charles Mingus, Pink Floyd, Negativeland, and bunch or pirate chants and stuff. I really enjoyed Chesky's The Ultimate Demonstration Disc.
P.s I plan on getting a computer to replace my o l d workhorse. Please have a goodnight and happy listening.