Hi!
I have received a MKIII the 5 feb, so it is a very new thing and I have around 26 hours of use on it. I had and used portable headphone amps and was satisfied. they did the job...
Yesterday for the first time I listened to a movie through headphones, a very simple rig, an RCA cable from the audio out of the DVD player to the RCA in of the MKIII, then to Sony 7509HD headphones. I will not BS in saying this is the best score ,etc... but the experience was very pleasant and the sound was very well divided and it was really interesting. So the MKIII did a nice job there.
As regards music, it is the same. The sound is suppose to improve up to the 50-100 hours mark, but if it stayed like it is now I would have no problem.
There is a difference between portable amp and this amp. The sound is much more solid, more bass, it has a huge soundstage also. It renders well all the music listened.
I am over the "getting impressed" stage, as I am enjoying what I listen, if you see what I mean.
Also Penchum as written many reviews concerning the LD amps, so check them out here and also the site little-dot.com
regards,