Just add a power supply, speakers, and a case, and you have a Bluetooth audio system.
For those who want to make DIY bluetooth speaker system.
You will need to supply a power supply not included.
12V DC input socket is 5.5- 2.1 connector Center Pin Positive.
Can also be powered by a 3 cell LiPo Battery.
25W x2 Bluetooth Power Amplifier Board
Bluetooth Audio Receiver Power Amplifier CSR4.0 Digital Power Amplifier Board Module.
This model automatically enters the pairing mode after powering on, and the search shows the device name: SANWU Audio.
Power supply: 2.1 interface DC 12V power supply.
Audio input: various versions of Bluetooth connection stereo input, using CSR8635 Bluetooth chip, Bluetooth V4.0, extremely high software compatibility.
Output impedance: 8 ohms (can drive 4, 6, 8, 16 ohms Impedance speaker).
Output power: adding the front-stage 5532 output power DIP switches makes it more convenient to directly adjust the gain of the rear-stage power amplifier.
Be careful changing the default dip switch settings as it will drive more power to speakers and possibly cause damage. Change at own risk.
Please pay attention to speaker polarity during install. Board is marked + and -.
Working Voltage: DC 12-25V
1x 25W x2 Bluetooth Power Amplifier Board
1x DC input pigtail, will need to solder connector of choice at end of pigtail.