The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.
2.Clearly lower impedance
vs 42Ohms (the average)
vs 4Ohms (best: Flips Solo 2 Social)
Impedance is the device’s electrical resistance to the current being pushed through it. The lower the impedance, the easier it is to get higher volume and requires less power.
3.Has an over-the-ear form
vs No (58% don't have it)
Comfortable full-size form with earcups that fully enclose your ears. This model is loved for its increased sound isolation and the fact that it won't leak sound to your neighbors. It offers potential for maximum bass and loudness levels.
4.Appreciably longer cable
vs 2m (the average)
vs 6m (best: AKG Q 701)
A long cable ensures more freedom of movement.
5.Is open backed
vs No (90% don't have it)
The device is designed to allow sound out through the back of the earcup and provides very natural and accurate sound. It's good for home listening.