My background for reference: 25+ years of professional mixing experience.
I've had plenty of headphones and a few sets of monitors over the years, and well, the NDH30's just blew me away. My initial test was with multiple Orchestral instruments across Violin, Viola's, Tuba, Horn section etc. The detail in the sound across dynamic ranges was phenomenal. Very delicate and nuanced aspects were exposed. The depth and width of the sound stage had clarity for making appropriate placement choices. I was most delighted to hear the headphone respond well enough I could easily make the critical choices with confidence.
The next test was with the Moog Mariana plugin. Woah...I had no idea just how fat that plugin actually is until now....but back to headphones. The deep bass was present and not at all diminished like other headphones I've owned. A big plus here for low end response. The details of additional aftertouch material across many presets were crystal clear indeed. Like headphones of this calibre, information always present, but seldom heard were clear and discernible.
I read a lot of reviews on these headphones before purchase, and came across one that compared them to AKG K702, having mixed with those for probably 15 years, I can say this is very very much not the case. The low end response of the NDH30s is significantly better.
I bought these headphones to compliment a purchase of KH120 II / KH750 DSP setup for a new studio, but perhaps the NDH30 are competent enough, I might not rush to buy them just yet.
NDH30 are very much worth the money, I would be very surprised to hear anyone not happy with them for mixing duties.
