4 ohm output impedance subwoofer amplifier board

{"cid":"91222503","title":"Class D Subwoofer Amplifier Board with 4 Ohm Output Impedance 30-200 Hz Frequency Response and Toroidal Power Supply","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/97\/01\/aea23e7c84d91c4551f6d4717c57-200x200-1.jpg","attrs":{"Price":"$129.50-138.50","Minimum Order Quantity":"300","Place of Origin":"Guangdong, China","Output Power":"1000W RMS 4ohm","Max Power":"2000W","Output Impedance":"4 ohm","SNR":">90dB","Volume Range":"-60~10 dB","Frequency Response":"20-200 Hz","THD":"< 0.05% (@ 1kHz)","Output Noise":"< 1mv","Input Sensitivity":"580 mv","Efficiency":"> 85%","Working Voltage":"AC 110-240V\/selectable","Input Methods":"2 XLR-1\/4\" combo, 2 RCA","Panel Material":"Aluminum or iron","Protection":"Anti-clipping circuitry","Class Type":"Class D"}}

{"cid":"91219651","title":"50W*2 100W TPA3116D2 BT 5.0 HIFI Digital Power Subwoofer Amplifier Board for Audio","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/20\/80\/a563a3766a50b5b79105623a734c-200x200-1.jpg","attrs":{"Price":"$9.90\/pieces 10-99 pieces","Brand Name":"creatall","Model Number":"CA-3169B","Minimum Order Quantity":"10 pieces","Place of Origin":"Guangdong, China","Application":"TPA3116D2 power amplifier board","Series":"TPA3116D2 power amplifier board","Mounting Type":"standard","Description":"TPA3116D2 power amplifier board","Package":"Yes","Channels":"3 (2.1)","Maximum Power Per Channel":"50W","Product Name":"TPA3116D2 Digital Amp","AMP Chip":"dual TPA3116D2","Max Output Power":"2*50W+100W","Power Supply":"DC12~24V"}}

{"cid":"91212211","title":"ZXY2207 600:10K Audio Isolator Power Amplifier Noise Reduction Module Board","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/4e\/ac\/8700f0a860b85afaf4ecadb8722e-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"ZXY","Model Number":"ZXY2207 600:10K","Minimum Order Quantity":"Negotiable","Delivery Time":"Stock Or 3 weeks","Certification":"RoHS,ISO9001,CE","Place of Origin":"Shenzhen,China","Payment Terms":"T\/T ,paypal transfer","Supply Ability":"1000K-pcs\/month","Packaging Details":"100pieces \/ Carton; Size:380mm*325mm*345mm","Model number":"ZXY2207 600:10K","Product name":"600:10K Audio Isolator Power Amplifier","Application":"Professional recording studio","Function":"Noise elimination","Advantage":"High sensitivity, high reducibility","Apply for":"Integrated circuit"}}