Specification:
Item Type: Power Amplifier Board
Material: PCB
Bluetooth: Bluetooth 5.0
Voltage: 3.7V 5V
Speaker.
Working Voltage Lithium 3.7V, or Regulated Power Supply DC 4.5?5V
Current (1A When Connected to A Speaker, 2?3A or so When Connected to Two Speakers)
Lithium Powered Speakers with 4 Ohms 3W and 3W, Regulated Power Supply 5V Speakers with 4 Ohms 5W and 5W
Package List:
1 Amplifier Board
1 Cable
2 x Sound Cable
Note:
1. B + connected to the power supply positive DC3.7V to 5V +, GND ? connected to the negative terminal. 2.
2. working voltage lithium 3.7V, or voltage regulator DC DC 4.5?5V, current (connected to a speaker 1A; connected to two speakers 2A?3A or so. If you use 3.7V lithium battery, please ensure that the lithium battery and discharge can reach 2A, some lithium batteries have voltage but the current is unstable or can not meet the requirements, please use caution, otherwise it will always restart or sound quality is not good sound or distortion and other bad phenomena (if you have this problem, please check your power supply); voltage can not be higher than 5V, otherwise It will damage the main chip and amplifier IC and related components, please note.
3. SP? SP+ from the bottom to the top L?O? L?O+ connected to the speaker.