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.