Audio Amplifier Board, Icstation ???? ????? Compatible Stereo Audio Amplifier Module 2X5W Bt 5.0 Mini Amplifier Board 3.7V 5V Fo

This Icstation ????-?????-Compatible Audio Board Is Able To Give Your Amplifier/Home Stereo ????-?????-Compatible Capability, Just A Very Simple Operation Can Be Converted Into Audio. You Won'T Need To Be Tethered By A Cord When You Play Music Through The ????-?????-Compatible Input On The Home Stereo. Say Goodbye To The Wire! This ????-?????-Compatible Is Version 4.2, Compatible With Most Mobile Phones And ????-?????-Compatible Adapters. The Maximum Transmission Distance Is About 15 Meters. It Will Automatically Connect To Already Paired Devices And Automatically Plays Music. The ????-?????-Compatible Audio Board Already Has Dual 5W Power Amplifier Circuit. It Doesnt 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 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.