DescriptionModel:S-507 Product Features: Magnetically shielded satellite drivers, no need to worry about the screen nearby. Wooden case for whole set, including woofer and satellite speakers. Fashionable design Infrared remote control and front panel control keys. Rainbow LCD display and 3 colors auto-change Safety protection by adding power fuse. HQ BASS technology.Sensational audio effect. Unique built-in program on the PCB by our engineers, not easy to be copied. Specifications: Total RMS: 33w = 18w + 3w x 5 Driver: 5.25''/woofer, 3'' x 5/satellite speakers THD+N (Amplifier): <=0.5% (satellite, PO=3W) Audio Input Port: 5.1 channel RCA Line-in Infrared remote control keys: Main Volume, Front Vol., Rear Vol., Center Vol., Woofer Vol., Mute, CD/DVD and power. Front panel control keys: stand_by,5.1 ch input, Stereo input, Mode, Up Vol., Down Vol. Usage: desktop with high quality 5.1 sound card, CD player, MD, DVD player with 5.1ch or 6.1ch decoder, etc. Support Document: User Manual