Creative A550 5.1 Multimedia Speaker System Creative DSE (Dual Slot Enclosure) incorporates a truly functional, conventional port tube within a tight enclosure improving frequency distribution of the whole system Improved IFP (Image Focusing Plate) features a flare surrounding the satellites to improve sonic directivity and imaging Small satellite foot print ensures easy placement options Custom tuned, down firing ported subwoofer for that oomph in your music Wired remote contol with Power On/Off and volume control for convenience