AMP555 4-Zone 8-Channel Non-Fan Low-Noise Multiroom Audio Digital Amplifier(2U)

AMP555  4-Zone 8-Channel Non-Fan Low-Noise Digital Amplifier .The Versatility of Amplifier makes it the perfect choice for almost every type of custom multiroom audio system. Its tabletop or rack mountable design allows it to be integrated easily into high-end whole house audio systems. Features: 8channels(4 stereo zones)in one convenient enclosure Stable class D design delivers superior audiophile sound quality and performance High efficiency . low heat . no fan , no noise, the latest technical design  Independent bus inputs provides unparalleled flexibility Bridgeable channel outputs provide additional power when needed Independent channel gain controls allow the output of each speaker to be perfectly matched Manual , auto or triggered on/off for integration into any automated system Multi-Stage protection circuitry for reliability and easy troubleshooting of audio system Installer-friendly setup and connections Can be converted easily between rack mount and tabletop configurations Heavy-duty steel chassis with brushed aluminum faceplate AC100--240V wide voltage. Suitable for any region in the world Specifications 80w per channel RMS@8ohm 160w per channel RMS@4ohm Bridged 300w per channel RMS@8ohm Input Sensitivity: 775 mV for full output with all level controls at max. Input Impedance: 10 K ohm  Frequency Response:  20 Hz to20 kHz Distortion: 0.05% THD 20 Hz-20 kHz @ 10W (8 ohm)  Distortion (Bridged): 0.1 % THD 20 Hz-20 kHz @ 150W (8 ohm) Channel Crosstalk: 80 dB Signal tonNoise Ratio: 10 dB A-weighted  Efficiency:85% (all CH full power) Power Requirements: 100 - 240V AC, 60 Hz/50 Hz  Auto Turn-On Sensitivity: 13.7mV Dimensions: 16.7” W x 4” H (including feet) x 14.25” D