XH-M566 power TPA3116D2 2.1 digital power amplifier stereo + subwoofer audio amplifier

Product description Chip Type: TPA3116D2 x 2 Power Supply: DC 12-24v Output Power: 50Wx2; 100Wx1(Super Bass) Output Load: 4-8Ω Frequency Response Range: 14-100KHz Signal Noise Ratio: 100db Channel Amount: 3(left+right+bass) Switch Frequency: 1.2MHz Product Size: 134x137x68mm Precaution: 1. NOT include a power supply, please prepare a DC 24V 5A 120W power supply with 5.5*2.1mm barrel connector; 2. Do not use power transformer to power on this amplifier! (Because power transformer uses AC electricity, this amplifier only applies to DC electricity); 3. Do not connect the amplifier in series or parallel arbitrarily to get higher output power; 4. It is a normal phenomenon that there is rustle coming from the amplifier even if no sound is played. Well connect the audio wire and MP3, there wont have noise when playing music and please turn off the amplifier if you do not play music. Package Dimensions 6.1 x 6 x 3.3 inches