1. Power supply: DC12-30V/5A or higher
2. Bluetooth version: 5.2
3. Audio input: bluetooth + AUX + USB flash drive + USB sound card
4. Bluetooth audio decoding: AAC, SBC
5. USB flash drive decoding: WAV, FLAC, APE, MP3
6. The audio amplifier board uses a dual TPA3221 amplifier chip design, supporting left and right channel and subwoofer output, suitable for DIY audio systems, desktop audio systems, home audio equipment, and speaker upgrades.
7. Onboard multiple independent knobs allow for separate adjustment of left and right channel volume, treble, bass, and subwoofer volume and frequency, facilitating sound adjustments based on speaker specifications and usage environment.
8. Supports multiple audio input methods including Bluetooth, USB flash drive, sound card, and AUX, allowing connection to mobile phones, computers, and other audio playback devices. After Bluetooth connection, music can be played via mobile phone, and related controls can be performed using the XinYiLian APP.
9. All-in-one (without casing): 111x100x23mm/206g
10. All-in-one (with casing): 112x102x28mm/245g
11. External type: 111x100x23mm/245g