Yamaha's NX-B55 2 3/4-Inch Full Range Driver Desktop Computer Speakers with Bluetooth is not your ordinary small speaker system. The NX-B55 employs a unique cabinet shape and front-ported design that delivers exceptional frequency response with clear sound fields. An ideal companion for your PC or Mac, these powered speakers also work great with iPad, iPhone, and Android devices. Tuned to deliver maximum performance from every type of digital device, the unique cabinet shape prevents internal sound loss and gives the best possible frequency response. Plus, a bass port in the front pushes sound straight out into the room, providing clear sound fields. The automatic loudness control accurately adjusts bass output to match the volume. Simply pair your phone or tablet via Bluetooth for instantly great sound quality. You can also plug in your computer or TV to upgrade their sound output. And, with modern metal grilles and a unique design, this speaker system looks as stylish as it sounds.