ITEM NAME:TDA2822 DC 1.8-12V 2.0 3.5mm Stereo AMP Module Mini Audio Power Amplifier B I1V0 Product Description 1.Supply voltage: DC 1.8-12V 2.Output Power: 0.1W-5W ;4-32 Ohms 3.Dimensions: 52 x 31 x 23mm (L*W*H) 4.Input Interface: 3.5mm Audio input 5.Adjust form: volume adjustment 6.Using TDA2822M acts as amplifier chip, this chip is STMicroelectronics (ST) developed dual-channel monolithic power amplifier IC, usually in the pocket cassette player (WALKMAN), tape recorders and multimedia speaker in for the audio amplifier. 5.Simple circuit, good sound quality and wide voltage range Package Included: 1*TDA2822 DC 3V~12V 5V 3.5mm Stereo AMP Module Mini Audio Power Amplifier Board.Input Interface: 3.5mm Audio input. Output Power: 0.1W-5W ;4-32 Ohms.