Model: TPA31162.1 Bluetooth digital amplifier Working mode: Class D Mute current: 50MA Working efficiency: 90% Output power: 50W*2+100W Frequency response: 20HZ-20KHZ Working voltage: DC18V-DC24V Output current: 6A Receiving range: 10 meters Weight: 0.4KG Potentiometer function: From left to right switch 1. Left and right channel volume. 2. Bass volume. 3. Master volume. Adopts TPA3116 chip, QCC3034 Bluetooth 5.1 module Supports , AAC, , -HD decoding Bluetooth decoding Partly adopts ES9023DAC decoding chip, power filter capacitor Uses 3300UF/25V capacitor Adopts the latest Bluetooth version 5.1, the way to connect Bluetooth is the same as the connection method of ordinary devices Input method: analog and Bluetooth input function. When both methods are input at the same time, Bluetooth input is prioritized. After Bluetooth is connected, input is automatically disconnected; when analog input is required, please turn off the Bluetooth function of the mobile phone before switching Color:Black Material:Metal Package Contents: 1 * Digital Amplifier Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.