Davidzhezhe wrote the Little Dots were made with the the HD650 being one of a few reference HPs in mind. I have the LDMKIII here and the IV would be an upgrade to it.
The HD650 sound quite nice through this amp, but be sure to do some tube rolling to get the best out of it.(There are also 2 tube rolling threads in the forum for starters).
Edited by superdux - 11/14/13 at 3:21pm