Audio-Technica ATH-AD700X are over ear open back headphones of Japanese production. If you are going to get one, you will find the following review useful to make the right choice. Turn your attention, that it is used with wired connection only.
Audio-Technica ATH-AD700X specs show brilliant features of frequency response that states 5Hz-30KHz. It has low impedance of 38 Ohm and high sensitivity of 100 dB. All these specs allow the headphones to reproduce quite a decent sound quality for critical and casual listening even at loud volumes.
These headphones are not bass-heavy. They reproduce a harmonious sound with crystal fidelity and clear imaging. That makes me feel present at the music stage, feel the direction of sounds, and location of instruments and voices. I would call the sound live. The mids and highs are emphasized. The open back does its work and makes them sound spacious.
The pair of headphones are connected with a 3 m/9.8 ft wire that is detachable.
The unique design of Audio-Technica ATH-AD700X is the special headband shape. Its circular wired headband is super comfortable and reduces pressure on the head. There is also a hanging padding that repeats the shape of the head. Its size is adjustable. Large circular ear cups are well padded and very breathable with a fully open back. They are also foldable and very lightweight with 265 g/9.3 oz. The design seems to me bulky.