This digital amplifier board adopts large output power of 2*50W/1*100W to offer super heavy bass sound effect. High signal to noise ratio up to 100dB makes sound very clear with no noise, Furthermore, built-in multi-level protections ensure safety when using. Features: Super Heavy Bass - Large output power of 2*50W/1*100W gives you a super heavy bass stereo sound. Make you feel you are at the music world. 100dB Signal to Noise Ratio - Adopting high signal to noise ratio up to 100dB to make sound very clear. 3 Sound Channels - It adopts 3 sound channels to create a stereo surrounding sound. Gives you greater hearing enjoyment. Multi-level Protection - Built-in over voltage protection, over heat protection, undervoltage protection, DC detection and short-circuit protection of this digital power amplifier board helps provide a safe amplification. Stable Current - This digital power amplifier board makes sure a stable current, thus ensuring the stability and smoothness of sound. Specifications: Product type: Audio Amplifier Chip: TPA3116D2 chip Maximum output power: 2*50W/1*100W Signal to noise ratio: 100dB Power supply voltage: DC12-24V Output loading: 4-8Ω Switch frequency: 1.2MHz Channel number: 3 sound channels Heat dissipation: Detachable heat sink Protection: Over voltage protection, over heat protection, undervoltage protection, DC detection, short-circuit protection Package size: approx. 16 * 14 * 9 cm/ 6.3 * 5.5 * 3.5 in Package weight: 389g/ 13.7oz Package List: 1 * Audio Amplifier 1、Super Heavy Bass - Large output power of 2*50W/1*100W gives you a super heavy bass stereo sound. Make you feel you are at the music world. 2、100dB Signal to Noise Ratio - Adopting high signal to noise ratio up to 100dB to make sound very clear. 3、3 Sound Channels - It adopts 3 sound channels to create a stereo surrounding sound. Gives you greater hearing enjoyment. 4、Multi-level Protection - Built-in over voltage protection, over heat protection, undervoltage protection, DC detection and short-circuit protection of this digital power amplifier board helps provide a safe amplification. 5、Stable Current - This digital power amplifier board makes sure a stable current, thus ensuring the stability and smoothness of sound.