Feature: 1. Durable and Practical: The amplifier board is made from high-quality materials, ensuring durability and practicality for long-term use in various audio setups. 2. TWS Wireless Stereo Pairing: The audio amp board supports True Wireless Stereo (TWS) pairing, instantly transforming into a left and right channel stereo sound system for an immersive audio experience. 3. Supports Multiple Audio Formats: The audio amplifier module is compatible with MP3, WMA, and lossless formats like WAV, FLAC, and APE, providing versatile playback options for high-quality sound. 4. Customizable Bluetooth-Compatible Name: The audio amplifier board allows you to change the Bluetooth-Compatible name, making it easy to identify and manage multiple devices in your audio network. 5. Wide Application Range: The mono audio power amplifier module is suitable for 4-8 ohm, 5-30W speakers, offering broad compatibility for various audio projects and speaker setups. Specification: Origin: Mainland China Compatible Audio Video Equipment Style: Amplifier Package: Yes Name: Mono 30W Bluetooth-Compatible audio amplifier board module Bluetooth-Compatible version: 5.3 Bluetooth-Compatible transmission distance: 15 meters Audio input: Bluetooth-Compatible + AUX + USB driver + USB sound card Audio output: Mono 30W Adaptive power supply: DC9-24V, 3A (cannot be connected to AC power) Adaptive speakers: 4-8Ω, 5-30w Total volume with buttons: Click: play/pause Double-click: next track Triple-click: enter or exit TWS mode Long press: turn on/off Featured functions: Support five-finger audio APP. Modify Bluetooth-Compatible name, password setting, prompt volume adjustment, on/off prompt tone, sleep aid songs, firmware upgrade, etc.; speaker pairing function and true wireless function enable two sets of speakers to be combined into left and right channel speakers, providing a stronger sense of spatial positioning Note: If using 4Ω speakers, please use a 12V power supply. If the voltage is too high, it will be damaged Shell material: ABS Product size: about 71.00x46.00x21.00mm Product size: 2.8x1.81x0.83inch