S-299 4.1-Channel Bluetooth 5.0 Hi‑Fi Power Amplifier — 40Wx4 RMS + Subwoofer (DC 12V/5A)

Compact 4.1-Channel Hi‑Fi Amplifier: The S-299 powers four passive speakers (each 4-8 Ω, 40W) with a rated output of 40Wx4 and a peak power capability up to 800W. It also supports connection to an active SUB subwoofer (active subwoofer has no power limit), making it suitable for home theater, PC audio setups, and car audio systems. Power input: DC 12V/5A. Advanced audio processing and sound tuning: Built on an improved circuit board with 2 integrated YD7377 audio processing chips and a robust transformer, the S-299 delivers high output with lossless decoding and minimal distortion. Integrated treble and bass controls plus six selectable equalization presets let you tailor the sound from deep bass to clear highs. Multiple inputs and Bluetooth 5.0: Play music from USB, TF card, SD/MMC, AUX and RCA sources or stream wirelessly via the built-in Bluetooth 5.0 chip (recommended Bluetooth range within 5m). USB/TF card plug-and-play simplifies local playback. Zone volume control: Two independent volume controls allow separate level adjustment for speakers A and B and for speakers C and D — for example, set one pair for indoor listening and the other for outdoor or balcony use. Portable size and convenient operation: The S-299 measures 5.3 x 6.9 x 1.7 inch, making it easy to place or transport. A remote control is included for effortless operation and mode/EQ switching.