All About Your REQ20 Professional Graphic EQ: How To Set Up Your REQ20: Features: Rockville REQ20 19 Rack-Mount Dual 10 Band Professional Graphic Equalizer With Dual VU Meters Level Monitors Dual 10 Band Graphic Equalizer (20 Bands Total) Frequency Response: 20Hz - 20KHz Blue LED on each Equalizer Slide Control Stereo RCA Line Input Stereo RCA Line Output Stereo RCA Line Output for Record Vacuum Fluorescent Display Bass/Midrange/High EQ Controls Separate Left/Right Channel Volume gain control Signal to Noise Ratio: >88dB Input Power: AC ~ 110V 60H/220V 50Hz 110/220V Switchable Front Panel Power Switch Removable Rack Mount Brackets Dimensions: 17 (19 w/brackets) x 9 x 2.2 Weight: 5 lbs