I've been playing around with the M1060 for the past 2 days. Stock I do not like them very much, very in your face upper midrange, uneven tonal balance, vox on men sound congested, blots out treble detail/air.
I tried my vegans on them, an improvement, tones down the upper midrange spike some, increases treble detail, lifts soundstaging from three blob to slightly off face(which IMHO is about the best one can hope for in any planar I've heard).
Removed the ear side stock driver covers, very very thick felt, makes the can with vegans darker. Time to play with the rear damping.
Ran them grilless with no damping foam, bass is stronger, highs are too much, needs some degree of damping on the outer driver side.
Knowing what we know about the physical design of the driver, I looked to the damping scheme in early LCD3s, namely fleece block+felt circle.
Now we are getting somewhere, very very strong bass but the highs are attenuated down too much, loosing air/treble detail again, and getting some bass tubbiness/bleed into the mids.
Looking at an old LCD3 thread fine some convincing measurement that 2 ply toilet paper can both step down the bass a touch and raise the high end, at least on a real pre-fazor LCD3 driver.
Bingo! This is now the most tonally balanced I've heard these cans sound, very very similar to a LCD2.2 with a little bit more lit up upper midrange.
Still overall a dark can, darker than I generally prefer, but this is now at a place that I think it should have been stock. Who ever tuned the damping on these cans for monoprice either didn't care, wanted excitement over neutrality, or was imho deaf. Now I can play them at spirited volumes without fatigue. I don't know if I'll keep them, I need a spend a few days in post modded form and see if i can live with the laid back sound.