... 20Hz-20KHz,-.2dB/+.2dBTourClass protectionACL,IGM,AutoRamp,short circult,DC voltage,turn-on/off transient,current inrush,sub/ ... 3Power,4Ω)9450 BTU/hrCoolingTWO real panel variable speed DC fans,filters,detachable without toolscontrolsFront panel;2 attenuators,magnetic ... gain switchsLED indicators(per channel)Clip/limit,singal,temp/DC,activeConstuctionSteel chassis,16 gauge,double thickness in rack ...