The black A2+ 2.75" Powered Desktop Speakers from Audioengine are a 2.0 speaker system that features a powered and passive speaker. Each speaker incorporates a 2.75" Kevlar woofer and ¾" silk dome tweeter that can produce up to 30-watts of peak power. With a frequency response of 65 Hz to 22 kHz, the Audioengine A2+ speaker system can handle a wide range of audio material. The speakers also feature magnetically shielded designs to avoid interfering with closely placed video monitors.