1. Using the original TPA3116*2 NE5532.
2. Using 4.2 Bluetooth chip, the signal is more stable.
3. The power supply filter capacitor uses 5 470UF/25V electrolytic capacitors.
4. Adopt the special power amplifier inductor of red ash ring to ensure that the voice is crisp and strong.
5. The way to connect Bluetooth is the same as common device connection.
6. Input mode: analog and Bluetooth input function.
Bluetooth input is preferred for both input modes. After Bluetooth connection, RCA input is automatically disconnected. When analog input is needed, please turn off the Bluetooth function of the mobile phone before switching over.