XH-M567 TPA3116D2 2x80W Digital Amplifier Board – Treble Bass Adjust Stereo

FAQ:

1. What is the XH‑M567 TPA3116D2 stereo amplifier board and its key specifications?
   This board is a 2.0 stereo Class‑D audio amplifier built around the Texas Instruments TPA3116D2 chip. It delivers efficient, high‑power sound with built‑in treble and bass tone controls. Key specifications: operating voltage 12 V – 24 V DC (24 V recommended for full power), rated output up to 2 × 80 W into 4 Ω (at 24 V, 1% THD+N), efficiency > 90 %, switching frequency 400 kHz, and built‑in over‑current, over‑temperature, and DC protection. The board includes an on‑board volume, treble, and bass potentiometers, screw terminals for power and speakers, and a 3.5 mm stereo input jack. It is a popular choice for DIY bookshelf speakers, soundbars, and compact home audio systems.

2. How do I connect the XH‑M567 to speakers, a power supply, and an audio source?
   Wiring is very simple. Power input: connect a DC supply (12 V – 24 V, at least 4 A for full power) to the screw terminals labelled VCC (+) and GND (-). Speaker outputs: connect the left speaker to L+ and L‑, and the right speaker to R+ and R‑. The board supports 4 Ω – 8 Ω speakers; 4 Ω yields maximum power, while 8 Ω runs cooler. Audio input: a 3.5 mm stereo jack accepts standard line‑level signals (phone, MP3 player, Bluetooth receiver). The on‑board volume, treble, and bass knobs let you adjust the sound directly on the module.

3. What power supply do I need for the XH‑M567 TPA3116 amplifier?
   The board accepts a wide DC voltage of 12 V to 24 V. To achieve the full 2 × 80 W output, a 24 V power supply capable of at least 4 A – 5 A is recommended. For lower volume applications, a 12 V / 3 A supply provides approximately 2 × 30 W into 4 Ω. Do not exceed 26 V — sustained over‑voltage may damage the chip. A well‑filtered switching power supply or a high‑current battery (e.g., 5S Li‑Ion pack) works well. The board has no reverse‑polarity protection, so always double‑check the wiring before powering on.

4. What is the actual output power? Is it really 2 × 80 W?
   The 2 × 80 W rating is a peak marketing specification under ideal conditions. The true continuous RMS power depends on the supply voltage and speaker impedance. At 24 V into 4 Ω, the board can deliver about 2 × 50 W RMS (1% THD+N). Into 8 Ω, the power drops to around 2 × 30 W RMS. At 12 V, expect roughly 2 × 30 W (4 Ω) / 2 × 15 W (8 Ω). These are still very respectable power levels for a compact stereo amplifier that runs from a single DC supply.

5. How do the treble and bass controls on the XH‑M567 work?
   The board includes three on‑board potentiometers: VOLUME (overall output level), TREBLE (high‑frequency boost/cut), and BASS (low‑frequency boost/cut). The tone controls are passive RC networks placed before the TPA3116 amplifier input. Turning a knob clockwise boosts that frequency band, while counter‑clockwise cuts it. This allows you to adjust the sound to your liking without an external equalizer. The tone controls do not affect the amplifier's gain or power output; they simply shape the incoming audio signal.

6. Does the TPA3116D2 chip require an external heatsink? How hot does it get?
   The TPA3116D2 uses the PCB copper area as a heat spreader (the chip has an exposed thermal pad soldered to the board). For moderate power levels (up to 30 W – 40 W per channel), the board runs warm but typically does not need an extra heatsink. For sustained high‑power operation near the maximum rating, especially into 4 Ω, the chip temperature can rise. It is advisable to attach a small aluminium heatsink to the top of the TPA3116 chip and ensure some airflow. The built‑in thermal protection will shut down the amplifier if it overheats.

7. What protection features does the TPA3116D2 chip include?
   The TPA3116D2 provides a robust set of protections: cycle‑by‑cycle over‑current protection (OCP), over‑temperature protection (OTP) with automatic recovery, under‑voltage lockout (UVLO) to prevent malfunction at low voltage, and DC detection on the speaker outputs to protect speakers from damaging DC offset. It also includes a pop‑free start‑up/shutdown circuit that eliminates annoying clicks. These features make the module reliable for long‑term use in both hobby and commercial audio projects.

8. How does the XH‑M567 compare to the XH‑M544 mono amplifier?
   The XH‑M544 is a mono PBTL amplifier using the same TPA3116D2 chip, delivering higher single‑channel power (up to 150 W peak) but only one channel. The XH‑M567 is a stereo board, providing two independent channels with treble and bass controls. Choose the XH‑M567 for stereo speakers, bookshelf systems, or soundbars; choose the XH‑M544 for driving a single subwoofer or a high‑power full‑range speaker.

9. Can I add Bluetooth to the XH‑M567 amplifier board?
   Yes, it is very easy. Simply connect a low‑cost Bluetooth audio receiver module (such as the CSR8635, MH‑M18, or similar) to the 3.5 mm input jack. Power both the Bluetooth module and the XH‑M567 from the same DC supply (the Bluetooth module typically needs 5 V, so you may need a small step‑down regulator if your main supply is 24 V). The result is a compact, wireless stereo amplifier that can stream music from any smartphone.

10. Why is my XH‑M567 module not working or producing distorted sound?
    Common causes: 1) Insufficient power supply – ensure the supply can deliver enough current and the voltage is within 12 V – 24 V. 2) Speaker impedance too low – the board works best with 4 Ω – 8 Ω speakers; 2 Ω may cause over‑current shutdown. 3) Input signal too strong – reduce the source volume. 4) Wiring error – check speaker polarity and power connections. 5) Tone controls misadjusted – set treble and bass to the centre position first. 6) No sound – verify the volume knob is turned up and the audio source is playing.

11. What are the most typical applications for the XH‑M567 TPA3116 stereo amplifier?
    It is widely used in DIY bookshelf speakers, compact soundbars, PC speaker upgrades, portable Bluetooth speakers (with an added Bluetooth module), arcade cabinet audio, and small home theatre systems. Its combination of a common 12 V–24 V supply, built‑in tone controls, and generous stereo power makes it a versatile and beginner‑friendly amplifier for anyone building their own sound system.