RCA LOW LEVEL & HIGH LEVEL INPUTSREMOTE LEVEL CONTROLGREEN & RED LED POWER STATUS INDICATORPHASE SELECTOR SWITCH: 0 OR 180 ADJUSTABLE INPUT SENSITIVITY: 0.2V 6V0 12 DB VARIABLE BASS BOOST @ 45 HZSUBSONIC FILTER: 20 HZ 50 HZLOW PASS FILTER: 20 HZ 150 HZSOFT DELAY REMOTE TURN-ONTHERMAL SHORT & OVERLOAD PROTECTION CIRCUITS8900WDIM: 14L X 9.88W X 3HUPC : 791489112710Shipping Dimensions : 16.25in X 11.80in X 5.25inEstimated Shipping Weight : 11.75[]