Design and features:These headphones can be used wirelessly with Bluetooth devices or can be cord connected. When cord connected they have medium sensitivity so they can provide satisfying volume levels when used with home audio equipment and all but the lowest-powered portable audio devices. The Grind Wireless has an integrated microphone and built-in volume, music player function, and call connect/disconnect controls for use with paired Bluetooth devices. This model comes with detachable 47-inch long standard audio cable for wired use, and a USB charging cable.
Sound quality: We found the Grind Wireless delivers sound quality that falls in the very good range - it reproduces music and voice very well, although it does have some noticeable sonic quirks. The overall sound can best be summarized as somewhat boomy and bright. The bass (as in bass drums, bass guitars, stand-up bass, etc.) has good impact and goes deep, but is prominent and somewhat boomy. The midrange (voices, guitars, horns, etc.) is constricted (think straightjacketed), a bit hazy and gritty, and slightly thin. The treble (cymbals, the upper range of violins, etc.) is extended, but is a bit pronounced and lacking in detail. The sound has a good sense of liveliness and is somewhat open--sound-wise it almost seems like you don't have anything covering your ears. There was no significant difference in sound between the wired and Bluetooth modes, and this model sounds very similar sound to the wired version of the Skullcandy Grind.
Comfort: We found that these headphones produce a sense of light pressure on the ears. The ear pads might feel hot and/or sticky after prolonged use, and the overall fit is loose - the headphones will tend to fall off if the user leans forward when wearing them.
