Buy.com Rebate: Get the Logitech X-540 Speaker System - 970223-0403 for $81.29 - $30 rebate Offer valid from 2/24 to 3/7 = $61.29. Includes shipping. The X-540 speakers use FDD2 (Frequency Directed Dual Driver) technology to produce a uniform soundfield anywhere in the room. Immerse yourself in the game using the selectable ''matrix mode'' which automatically creates 5.1 surround sound from common 2-channel stereo sources. The compact satellites are wall-mountable, and a special clip lets you place the centre channel speaker on top of most flat-panel monitors to reduce desktop clutter. Use the wired control centre to control volume and bass levels or connect headphones to enjoy your games and music privately.