120W+120W TPA3116 Bluetooth Amplifier Board - High Efficiency Stereo

Our review of the 120W+120W TPA3116 Bluetooth Amplifier Board finds it most compelling for hobbyists and small-system builders who want a compact, efficient stereo power stage with modern wireless input. The board pairs the TPA3116D2 digital amplifier chip with a CSR Bluetooth module to deliver two clean 120W channels from a 12-24V DC supply, and its built-in protection circuits make it reassuring for experimental installs. For anyone assembling compact powered speakers, desktop rigs, or instrument amplification, the main reason to buy is its combination of high efficiency and practical protection features in a tiny 98 x 80 x 18mm package.

Key Features

• High output power: Two 120W channels deliver ample headroom for bookshelf speakers or small PA use when paired with suitable speakers and power supply.
• Efficient digital amp: The TPA3116D2 digital amplifier chip runs above 90% efficiency, keeping heat and power waste low during extended use.
• Integrated Bluetooth: CSR865/BTM835 Bluetooth 4.0 provides easy wireless streaming up to about 10m, making source connections simple for portable setups.
• Comprehensive protection: Built-in overvoltage, undervoltage, overheat, DC detection and short circuit circuits protect the amp and attached speakers during testing and deployment.
• Status indication: A Bluetooth status LED clearly shows connection condition so users know when streaming is active.
• Compact footprint: At roughly 98 x 80 x 18mm the board fits tight enclosures and DIY speaker builds without hogging space.

Who It's For

The amp board is aimed at electronics hobbyists, DIY speaker builders, and small-studio users who need a compact, high-efficiency stereo amplifier with wireless input and strong protection features. Its size and thermal profile are well suited to desktop audio, powered bookshelf systems, instrument practice rigs, and conversion projects where space and power efficiency matter.

It is less appropriate for those who require full commercial packaging, integrated controls like balanced inputs or advanced DSP, or users who prefer plug-and-play consumer receivers with remote control and preamplifier features. Buyers should also plan for a suitable DC 12-24V power source rated above 3A per channel peak to realize full output.

Pros & Cons

Pros

• High-efficiency TPA3116D2 design that minimizes heat and power loss.
• Clear Bluetooth connectivity with a status LED for simple wireless streaming.
• Robust safety features including overvoltage, undervoltage, overheat and short-circuit protection.
• Compact size that fits into tight DIY enclosures.

Cons

• Board-level product requires external power supply and mounting, not a finished consumer amp.
• No onboard advanced input selection or remote control, so occasional manual switching may be needed.

Specifications

Our Verdict

This amplifier board is a strong value for DIYers who need a compact stereo power stage with reliable wireless input and extensive protection. It excels where efficiency, space savings, and straightforward Bluetooth streaming matter, but it is best used by those comfortable adding a power supply and enclosure rather than expecting a finished consumer product.

Frequently Asked Questions

What power supply does this board need?
Use a regulated DC supply in the 12-24V range capable of delivering sufficient current; the board specifies >3A and higher peaks for full output.

How far does the Bluetooth range reach?
Range is approximately 10m in open space using the built-in CSR865/BTM835 Bluetooth 4.0 module under normal conditions.

Does it include protection circuits?
Yes, the board includes overvoltage, undervoltage, overheat, DC detection and short-circuit protection to safeguard the amp and connected speakers.