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 ATH-SR5BT has an integrated microphone and volume, music player function, and call connect/disconnect controls for use with paired Bluetooth devices. Additional features include optional NFC Bluetooth pairing, pairing memory for up to 8 Bluetooth devices, and earcups that swivel to flat for ease of carrying and storage. This model comes with detachable 50-inch long audio cable with a built-in mic and call answer/music player control button for iPhone/iPod/iPad/ and smartphone use, a USB charging cable, and a carrying bag.
Sound quality: We found the ATH-SR5BT 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 lean. Bass (as in bass drums, bass guitars, stand-up bass, etc.) goes fairly deep and has decent impact, but the mid- and upper bass is slightly subdued, while the lower bass is a bit boomy. The midrange (voices, guitars, horns, etc.) is somewhat congested (think sonic traffic jam) and a bit thin, grainy, and etched (a bit more sharply outlined then it should be). The treble (cymbals, the upper range of violins, etc.) is extended but a bit smeared (sounds that should have a delicate shimmer sound blurred) and somewhat prominent. 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 Bluetooth and wired modes.
Comfort: We found that these headphones produce a moderately light sense of pressure on the ears. The ear pads might feel hot and/or sticky after prolonged use.