The module requires very high power, otherwise it may affect audio quality. To avoid interferences, power supply must be provided through LC filter circuit, especially when using a switching power supply. Module size PCB : 25*15.5*2.4MM Pin pitch: 2.54MM Common problems: 1 High wow & flutter level: Generally caused by power interference, the power line must be coupled with the LC filter circuit. 2 3.7V power supply: The module is to be powered with 5V by default. You can replace the diode on the JDY-62 module with either 0805 one OR resistance, or use a wire to short circuit, so that you can use a lithium battery 3 Bluetooth signal is too weak Do not cover the Bluetooth module antenna nor place the board under/over copper shielding. There must be no metal shielding around the antenna. 4 the sound is too loud Generally caused by the power supply interface interference, it is recommended that the power amplifier wiring is not too long, the Bluetooth port and the power port are separated https://elecena.pl/product/22624546/dual-channel-bluetooth-5-0-audio-stereo-module-jdy-62a 2023-02-23 https://elecena.pl/product/22624546/dual-channel-bluetooth-5-0-audio-stereo-module-jdy-62a 2025-10-28