TDA3116D2 high-power digital power amplifier board TPA3116 two-channel amplifier board 2*50w
The main technical parameters: Board size ( board in 2015): 50(W) X 79(D) X 22(H)mm (excluding potentiometer protrusion 15mm)
Operating voltage range: DC 9-25V (current 3A or more, if you want more power, 19-24V/4A or more is recommended), Audio input sensitivity: 600mv

Speaker Impedance:
Two-channel speakers: 4-8 ohms.
Maximum output power:
50W(left channel) + 50W(right channel) dual channel
Dual channel output power:
12V/10+10W (8 ohms)/15+15W (4 ohms)
15V/13+13W (8 ohms)/25+25W (4 ohms)
19V/22+22W (8 ohms) / more than 39+39W (4 ohms)
22-24V/ more than 32+32W (8 ohms).
Colour: Black+Blue
Material: pvc+metal
Size: 50 x 79 x 22mm

Package Contents:
1 x digital amplifier board