Note: This is a DIY kit, you need to assemble it.

Features:

Product name: 2.1 Audio amplifier board
Adjustment type: Master Volume + Treble + Bass
Chip selection: TDA2030A
Power range: AC8-18V 2
Recommended power: AC12V 2 30W
PCB material: FR-4 fiberglass board
Channel type: Stereo + Subwoofer
Left and right channel: TDA2030Ax2
Bass output: TDA2030Ax1
Quiescent current: 60MA (AC12V time)
Signal to noise ratio: 85%
Recommended speaker: 30-100W
Input impedance: 2K-3K
Output impedance: 4-16
Output power: 18W +18 W (4-6 inch,4-8 speaker) + 20-70W subwoofer (4-8 inch, 4-8 )
Weight: 135g

Special: This board has a MP3 decoder audio input block and also with an DC 9V power for MP3 decoder board.

Package included: (not include mp3 decoder board, and power supply adapter)

1 x TDA2030A Amplifier Board (board color send in randomly)
1 x Audio Cable

Test pictures, for reference only: