The HDA-V90 Hi-Res Audio certified 5 channel amplifier redefines the industry benchmark in sound performance, delivering true high-resolution sound reproduction. The all-new digital design provides huge amounts of power output and an extraordinary damping factor making these amplifiers class-leading in every way. With performance at the highest standard, the HDA-V90 has a frequency response of 10-60kHz and a CH1-4: >500, CH5: >1,000 dampening factor to deliver high power output with precision, as well as a superlative high-definition sound experience. RMS Output Power 75Wx4ch+300Wx1ch (4Ω) 100Wx4ch+500Wx1ch (2Ω) Bridged 200Wx2ch (4Ω) THD+N ≤0.02% (10W), ≤0.07% (Rated Power) S/N Ratio CH1-4: >105dB, CH-5: >104dB Frequency Response (-3dB) 10-60kHz (Hi-Res) Damping Factor CH1-4: >500, CH-5: >1,000 Size (mm) W297xD192xH50.8