Icstation Bluetooth Receiver Board BT 5.0 Stereo Audio Amplifier 2x5W Mini Power Amp Module 3.75V for DIY Wireless Speaker

This Icstation Bluetooth audio receiver board is able to give your amplifier/home Stereo Bluetooth capability, just a very simple operation can be converted into Wireless audio. You won't need to be tethered by a cord when you play music through the wireless Bluetooth input on the home Stereo. Say goodbye to the wire! This Bluetooth is version 4.2, compatible with most mobile phones and Bluetooth adapters. The maximum transmission distance is about 15 meters. It will automatically connect to already paired devices and automatically plays music. The Bluetooth audio receiver board already has dual 5W power amplifier circuit. It doesn't need to connect with extra power amplifier. The output of dual amplifiers can not be connected in parallel or connected to the negative electrode, otherwise the power amplifier chip will be damaged. 2-8 ohm and 3-10W speakers are compatible with the receiver board, but 3 ohm&5W or 4 ohm&10W are recommended. It outputs stereo. It also supports USB sound card, without drive. Just plug and play (in normal lithium battery power supply situation). Maximum working current is 5V 2A. Better sound quality when you use 5V 2A or more voltage power supply. We suggest using 3.7-5V lithium battery. (the lithium battery should have charging protection!) The on-board USB interface can not only be used to USB sound card but also charge the lithium battery and also used as a 5V power supply port. But you should note that do not use the power supply with unstable voltage and current, such as dry battery, portable charger, multi-function transformer and so on.