5W 5W Mini Amplifier Board Pam8406 Dc 5V Digital Stereo Power Amp 2.0 Dual Product features: 5W+5W Class D digital power amplifier Power supply voltage: DC 5V (Do not over-voltage, over-voltage will burn IC) Input method: single-ended Output power: 5W 2? 5V \ 3W 4? 5V \ 1.8W 8? 5V Size: 55.12mm*32.26mm Product weight: 25g Process materials: high-grade pure black immersion gold circuit board, imported KEMET audio capacitor, large-capacity filter capacitor per channel. Specially customized pure black pure copper terminals, gold-plated audio input terminals. Low quiescent current, excellent noise suppression Protection: power input reverse connection protection, short circuit, overheating, and over EMI Additional features: External amplifier type selection function can be connected (MODE: high level D type, low level AB type, factory default high level) Can be externally shut down (SD: chip shut down when low level, factory default high level) Can be connected to mute (MUTE: low level mute, factory default high level) Parameters:Audio amplifier board working voltage is DC 5V, output power is 5W (2? 5V)/3W (4? 5V) / 1.8W (8? 5V). Input method is monaural input. Artificial Material: this New-designed mini power amplifier is made of noble black immersion gold circuit board, imported KEMET speaker capacitor, large-capacity filter capacitor for channels. Besides, we customized black copper terminal blocks and gold-plated audio input terminal blocks for this new amplifier module. High Performance: the digital amplifier module is with high efficiency of over 90%, general harmonic distortion noise is less than 10%, low quiescent current and noise suppression. Safe Protection: the class D dual-channel amp board is designed with input reverse connection protection, short circuit protection, over heat protection; what's more, EMI is allowed to pass. Additional Function: it is available to connect amplifier type to choose different function (MODE: high electricity level is Type D, low electricity level is Type AB. Factory defaults high electricity level); available to add an external Shutdown (SD: the chip will be Shutdown at low electricity level, factory default high electricity level.