Final Sonorous III is one of the best values in mid range ($500-$1000 in our eyes) full size closed back headphones. Final use similar drivers in all their models, changing the housing, earpads or adding supertweeters to improve the sound. The III fits very comfortably, striking a nice balance of weight on the headband with very little clamping pressure and little heat for a great fit over many hours. The Sonorous III's gives a great balance of fast, deep bass, clear midrange and surprisingly clear, quality, detailed treble with no sibilance (no 'ssss' sound to female vocals).
Sonorous 3 are fun to listen to, never boring like some monitoring headphones, clear, have punch and are dead easy to drive, making them easy and affordable to use with a computer or ipad. Pairs really well with a Dragonfly dac or the excellent iFi nano Black label. These are pretty tough to beat for under $700.
Reviews: digitalaudioreview.net: Best Products of 2016: 'Final Audio’s Sonorous III is a closed back headphone that doesn’t sound like your average closed back headphone. I continue to enjoy its strong dynamic contrasts and clean, articulate midrange..'
Cnet.com: Audiophiliac's Headphones of the year, 2016: