NDH 20 Black Edition : Good but not great

The sound is nowhere near flat. The bass is super hyped and there is a weird peak around 3-4k. These factors make the headphones unsuitable for mixing/mastering purposes, and also a little bit fatiguing. I personally don't find them enjoyable either, even just for sitting down and listening to music. They are good but for the price, I definitely expected more. My favorite headphones (Sennheiser HD600s) cost half the price and deliver better in almost every aspect. Neumanns have better imaging and lower bass extension (which is too much for my taste). So if you're a bass head go for it, but if you listen to music with distorted guitars, be aware.

The comfort is surprisingly bad. The headphones are very heavy and the headband is quite hard. After an hour you will feel like taking a break. The ear cups are big enough but I wish they were oval shape, rather than round.

Overall, its a pretty good closed back headphones. If you are restricted to closed backs, this will probably be a great choice. But if you can open backs, there are much better options out there for cheaper prices.