Diymore TPA3116DA 100W Mono Digital Amplifier Board - High Power

In this review of the Diymore TPA3116DA 100W Mono Channel Digital Power Audio Amplifier Board, the bottom line is simple: this board is for DIY builders and audio hobbyists who need a compact, efficient mono amplifier for a subwoofer or single high-power speaker. Our review finds the board's single biggest selling point is its use of the TPA3116D2 chip, which delivers robust output without excessive heat under normal loads and supports a wide supply range for flexible installations.

Key Features

• Chip Type TPA3116D2: Provides efficient Class D amplification with solid audio clarity and the protection features expected in modern amplifier chips.
• 100W Output Power: Delivers enough power to drive a medium to large subwoofer or a single high-sensitivity speaker for strong low-frequency performance.
• Wide Supply Voltage: Works from DC 12-24V (listed DC 12-28V in some specs), allowing use with common 12V systems or higher-voltage audio setups.
• Protection Features: Built-in safeguards for short circuit, overvoltage, overheating and undervoltage help protect the board and connected speaker.
• Good Thermal Transfer: Customers report the board runs hard without getting too hot, indicating the layout and heat dissipation are effective for extended use.

Who It's For

This board suits electronics hobbyists building a single-channel amplifier for a subwoofer, a DIY car audio project, or a compact home theater LFE channel. It is particularly useful where a small footprint and efficient Class D operation are priorities and the installer can provide a suitable DC power source.

People who need stereo amplification, a finished enclosure, or plug-and-play consumer electronics convenience should look elsewhere; this board is a module intended for integration by users comfortable with wiring, power selection, and speaker matching.

Pros & Cons

Pros

• High real-world output that pairs well with subwoofers, giving strong low-end performance.
• Robust build quality and heat transfer make continuous use more reliable than cheaper boards.
• Flexible supply voltage range lets you use 12V systems or higher-voltage setups in many projects.
• Onboard protection reduces risk from shorts, overvoltage, and overheating during DIY use.

Cons

• Mono-only design limits use to single-channel applications; not suitable if you need stereo without adding a second board.
• Requires external power supply selection and wiring by the user, which can be a barrier for beginners.

Specifications

Chip Type	TPA3116D2
Output Power	100W (mono)
Supply Voltage	DC 12-24V (specs mention up to DC 28V)
SNR	100 dB
Input Impedance	10K
Recommended Speaker Impedance	2-8 ohm

Our Verdict

The Diymore TPA3116DA 100W mono board is a strong value for tinkerers who need a compact, efficient amplifier for a subwoofer or single speaker channel. Its TPA3116D2 chip, protection features, and good thermal behavior make it a reliable module when paired with an appropriate DC supply and matched speaker.

Frequently Asked Questions

Can this board run on a 12V car battery?
Yes, the board supports DC 12V and is commonly used in 12V systems, though output will depend on speaker and battery capability.

Will it drive a subwoofer directly?
Yes, customers report it works well with subwoofers; ensure the speaker impedance is within the 2-8 ohm range.

Does it include thermal and short-circuit protection?
Yes, the TPA3116D2 includes protections for short circuit, overvoltage, overheating and undervoltage as part of the board design.