JVC KS-DR3004 4-channel power amplifierFeatures:Output power: 800W maxOutput power RMS: 90W / 2Ω 4-channel 60W / 4Ω 4-channelGebruckt: 180W/4Ω 2Kanal4 CincheingängeHigh level connection for car radios withoutpreampautomatic switchIntegrated low-pass filter (80Hz / -12dB / oct.)Integrated high-pass filter (120Hz / -12dB / oct.)Total harmonic distortion: less than 0.04%Frequency range 5 -50kHz (-3dB)Signal/Rauschabstand: 80 dBA an 4Ω, 1W