Thanks for the insight! The cans are essentially new, they were returned as unwanted by the previous owner. I will let them fully burn in before making the final judgment. I recall that the pair of k701s I had before conveyed the same unnatural feeling to music when I used them with the Little Dot MK3 and that pair was fully burned in. I'm not fully convinced that the sound will change fundamentally though.
That's certainly interesting to hear. What other headphones do you have? What DAC do you have this hooked up to?