... . Volume, bass, treble, echo, mic-volume separately control4. Compatible with PC/VCD/DVD/CD/TUNER/TAPE/TV and other audio input ... selling model by 2010-2011yearSpecification:2.1CH home theatre with remote controller 1,Output power:30W+10W*2(RMS)2,Speaker ... system speaker ,With usb ,sd ,vfd display, fm , karaoke , mini remote function