Professional Power Amplifiers GDA series are popular for DJ market. SPECIFICATION OF GDA SERIESMODELGDA80GDA100GDA150GDA200GDA250GDA300GDA350GDA400GDA450GDA5001KHz 0.1% THDRMS @ 8 ohm Stereo80W100W150W200W250W300W350W400W450W500WRMS @ 4 ohm Stereo120W150W220W300W350W420W500W550W630W700WRMS @ 2 ohm Stereounavailable715W820W915WRMS @ 8 ohm Bridge250W350W470W650W750W850W1000W1100W1200W1300WRMS @ 4 ohm Bridgeunavailable1400W1600W1800WSignal to noise100dB100dB100dB100dB100dB100dB103dB103dB103dB103dBSlew Rate50V/μS50V/μS50V/μS50V/μS50V/μS50V/μS50V/μS50V/μS50V/μS50V/μSDamping Factor80:180:1200:1200:1200:1250:1250:1250:1350:1350:1Frequency response+/-0.015dB,20Hz+20KHzTHD≤0.1%Rated Power @ 8 ohm 1KHzIMD≤0.1%Rated Power @ 8 ohmInput sensitivity1.0VInput impedance10K/20K ohurs,unbalanced or balancedImput CMRR≤-75dBCross talk≤-70dBLEP indicatorSignal, Protect, Power, Clip/limiting, Bridge, ParallelMain power supply 220V 50/60HzFuseFuse:T3AFuse:T5AFuse:T8AConnectorInput: Male/Female XLR; Output: Speakon / Binding postDimensions(mm)420WX410DX44H (1U)420W*410D*88H (2 U)Class of circuitABHHHNet weight10.75kg10.98kg12.25kg12.38kg15kg15.55kg16kg17.25kg17.65kg17.85kg