Unleash room-filling sound with the Douk Audio M4: a four-channel Bluetooth 5.0 USB power amplifier that powers your entire home audio setup.
- Up to 50W per channel into 4Ω across four speaker sockets, with independent channel control and a tight 98dB+ SNR, 0.05% THD (1kHz/1W), 20Hz–20kHz.
- Inputs and playback: Bluetooth 5.0, wired stereo RCA, and U-disk playback (MP3/WAV/APE/FLAC/WMA) up to 32GB; U-disk takes precedence over Bluetooth (remove it to switch).
- CH3/CH4 routing: use as inputs or outputs to drive two speaker pairs or link multiple M4 units for multi-room audio.
- Compact, durable aluminum CNC case with anodized finish and built-in Bluetooth antenna; includes 24V/4.5A power supply, 128×134×33 mm, 540 g, and supports 12–24V.
