ITEM NAME:TPA3116D2 Dual 50W Channel Stereo Digital Amplifier Board DC 5-24V ME Features: With all-around protection system. With power supply reverse connected protection. With short circuit protection for horn output. With the switch anti impact design. Switch machine without "POP" sound. Specifications: Chip: TPA3116D2 Input voltage: DC 5-24V Output: max 50W dual channel Working frequency: 20Hz-20KHz Audio type: dual channel stereo Protection: over-voltage, under-voltage, over-heat, short-circuit Size: 84 x 51 x 29mm Package includes: 1 x TPA3116D2 Amplifier Board.Chip: TPA3116D2. 1 x TPA3116D2 Amplifier Board. Output: max 50W dual channel. Audio type: dual channel stereo. With short circuit protection for horn output. Switch machine without "POP" sound. With the switch anti impact design.