JR-502MT 2.0 Dual-Channel Amplifier Board, Car Bluetooth 5.0 Power Amplifier Board, 50W+50W HiFi Stereo High & Low Tone Adjustable Module, DC12-24V Stereo AMP Module for Car DIY Speakers.

2.0 Dual-Channel Power
Amplifier Module: JR-502MT audio power amplifier with mini size 8.9 x 6 x 2.1 cm / 3.5 x 2.36 x 0.82 inch, but Powerful, Dual channel stereo output power 50+50W, suitable for 4-8 speakers, It is recommended to use 15-50W speakers for the best effect.; HiFi
Audio Amplifier Board: JR-502MT 2.0 Dual-Channel Amplifier Board can contact two passive speaker(50+50W), DC12-24V ( 5.5X 2.1 mm). distortion rate below 0.3 %, low latency.;
Bluetooth 5.0 Inputs: The Bluetooth power amplifier board with 2 kind of inputs: AUX and Bluetooth inputs, the upgrade large chips support Bluetooth 5.0, low latency, The range of audio devices (smartphones, tablets, laptops, etc. ) with Bluetooth connectivity is 15m/49ft.
Note: When using AUX mode, please confirm that the Bluetooth connection of this module has been disconnected.;

Details

and Quality: Amplifier circuit board with 4 groups of red and gray ring inductors and 684 film capacitors, with low loss, high bandwidth, high fidelity characteristics; 2 pieces of chips have AM interference suppression, to ensure that the high-power output, and low distortion (less than 0.3 %), the electrolytic capacitor array filtering effect is very good, ensure the output of the sound quality is more pure. They are specially customized for the JR-MT21 digital amplifier