bluetooth 5 0 multi channel amplifier

{"cid":"91222503","title":"Integrated Desktop Bluetooth 5.0 Multi Channel Amplifier with 4.1 Channel and 400 Watts for Home Theater","imgUrl":"https:\/\/img.ismap.com\/nimg\/52\/bf\/679bdf75eda2089141fd4641004b-200x200-1.jpg","attrs":{"Price":"$93.50-98.50","Model Number":"BTA-450","Minimum Order Quantity":"300","Place of Origin":"Guangdong, China","Output Power":"4*50 W output RMS","Max Power":"400 watts","Output Impedance":"4 ohm","Bluetooth Version":"V5.0","Input Methods":"Bluetooth, coax, 3.5MM, Optical, HD-MI","Frequency Response":"20-20KHz","Net Weight":"2kg","THD":"< 0.05% (@ 1kHz)","S\/N Ratio":"> 95dB","Output Noise":"< 1mv","Input Sensitivity":"580 mv","Work Efficiency":"more than 85%","Working Voltage":"AC 110-240V\/50Hz","Channels":"4.1 channel amplifier, 4 speaker outputs, 1 subwoofer output","Panel Material":"Aluminum"}}