DAJUNGUO X400HS 2.1 Bluetooth Amplifier Board 200W+400W

The DAJUNGUO X400HS is a compact 2.1 amplifier board that delivers high-power stereo plus subwoofer output with Bluetooth 5.0, twin TPA3223 chips, and six studio-style controls for DIY and home-theater builds.

Designed for hobbyists and audio tinkerers who want a turnkey amplifier stage without sacrificing control, the X400HS combines robust power handling, flexible inputs, and hardware knobs for hands-on tuning. It accepts 12–42V DC, supports USB/aux/Bluetooth playback, and uses Texas Instruments TPA3223 amplifier ICs to produce separated left/right and dedicated subwoofer channels in a single compact PCB.

How much power does this amplifier actually provide?

The X400HS uses dual original TPA3223 chips to produce a three-channel configuration rated at 200W (left) + 200W (right) + 400W (sub) peak per the board's design. Real-world continuous power depends on supply voltage, speaker impedance, and enclosure tuning, so choose a matching power supply and drivers for safe, reliable output.

• Peak configuration: 200W + 200W + 400W (L/R/Sub)
• Input voltage range: 12–42V DC for scalable power
• Works best with properly rated speakers and suitable power supplies

What controls and tuning options are available on the board?

This board features six independent knobs allowing precise control of sub frequency, sub volume, left/right treble, left/right bass, left/right volume, and a master volume. The multifunction knob also offers play/pause, track skip, and reset for USB/Bluetooth sources, letting you mix hands-on analog control with digital convenience.

• Six studio-grade knobs for tone and level adjustments
• Dedicated sub frequency and level controls for crossover-like tuning
• Master volume plus multifunction playback control on the knob

Which inputs, outputs, and protections does it include?

The X400HS provides Bluetooth 5.0, a 3.5mm AUX, and USB playback (MP3/WAV/FLAC/APE up to 32GB FAT32), plus a physical mode switch for immediate source selection. Protection circuits guard against short-circuit, over-current, over-temperature, and reverse polarity, increasing reliability in custom builds.

• Bluetooth 5.0 for stable wireless streaming
• USB playback and 3.5mm AUX for wired connections
• Safety features: short-circuit, over-current, over-temp, reverse polarity protection

How do I integrate this into a DIY speaker or home theater setup?

The board's full-range left/right outputs are unattenuated, making it compatible with full-range drivers, 2-way cabinets, or active/passive subwoofer arrangements. It ships with a pre-soldered ipex antenna and a standard 5.5x2.5mm DC jack, but power supply and speaker cables are not included so you can pair with components to meet your voltage and current needs.

• Compact PCB for easy mounting inside custom enclosures
• Standard DC jack simplifies connecting user-chosen power supplies
• Best paired with drivers and power supplies rated for the chosen voltage

Who is this for: The DAJUNGUO X400HS is intended for electronics hobbyists, DIY speaker builders, small home-theater integrators, and anyone upgrading an existing amplifier stage who wants tactile control plus wireless streaming. If you can solder basic connections and match speakers and power correctly, this board offers a high-power, flexible foundation for a custom audio system.