TPA3255 Bluetooth 5.1 Power Amplifier Board 2.1 Channel - High-Output

In this review the TPA3255 Bluetooth 5.1 Power Amplifier Board is assessed as a DIY-focused 2.1 channel solution that aims to deliver high output and flexible inputs for home audio projects. The board's single biggest reason to buy is its combination of Class D TPA3255 chips and multiple input options, which provide both raw power and modern connectivity for custom speakers or compact home theater rigs. For hobbyists who need lots of clean power with Bluetooth 5.1 convenience, this unit is worth considering.

Key Features

• High output: Dual 220W left and right channels plus a 350W subwoofer channel deliver ample headroom for large bookshelf or floorstanding speakers when paired with an appropriate power supply.
• Bluetooth 5.1 and multi-inputs: The amplifier supports Bluetooth 5.1, AUX, U disk and USB sound card inputs so users can stream wirelessly or play local audio files without extra converters.
• TPA3255 Class D chips: The use of two Texas Instruments TPA3255 chips provides Class D efficiency and a design focused on low distortion across the audio band for clearer highs and controlled bass.
• APP and control features: The 5.1 version supports APP control with adjustable volume, timed shutdown, playlist display from U disk, and options like phone-shake song change and dial/mode key playback.
• Protection and reliability: Built-in protections for short circuit, overcurrent, overheating and anti-static events help the board report faults and recover without permanent damage.
• Wide compatibility: With a wireless range up to about 15 m in open space, the board is compatible with tablets, phones, PCs, TVs and laptops for versatile use around the home.

Who It's For

The amplifier board targets DIY audio builders and hobbyists who want a powerful 2.1 solution for custom speakers or compact home theater setups. It is also suited for users who value modern features like Bluetooth 5.1 streaming, U disk playback and APP-based control alongside substantial power delivery.

It is less suitable for someone looking for an out-of-the-box all-in-one speaker system or those who cannot provide a suitable DC power supply. Casual listeners who prefer plug-and-play bookshelf speakers with integrated amplification may prefer a finished product instead.

Pros & Cons

Pros

• Very high output capability for both stereo channels and a dedicated subwoofer channel, ideal for driving large drivers.
• Flexible input options including Bluetooth 5.1, AUX, U disk and USB sound card make sources easy to connect.
• Professional TPA3255 Class D chips and integrated feedback design keep distortion low while preserving clarity.
• Comprehensive safety protections reduce the risk of permanent damage during faults.

Cons

• Requires an external DC supply (DC16~38V, 10A) and appropriate speakers, so not plug-and-play for novices.
• Control features and APP functions may need time to configure to personal preference.

Specifications

Channels	2.1 channel (L, R, subwoofer)
Output power	R & L 220W each, Subwoofer 350W
Bluetooth version	5.1
Audio inputs	Bluetooth, AUX, U disk, USB sound card
Power supply	DC 16~38V, 10A
Size	141 x 132 x 26 mm
Protection	Reverse connection, undervoltage, overcurrent, overheating, short circuit

Our Verdict

The TPA3255 Bluetooth 5.1 amplifier board is a strong pick for DIYers who need a high-power, feature-rich 2.1 module with modern connectivity and robust protection. When paired with a suitable DC supply and speakers, it delivers clear, powerful sound and flexible control options, representing solid value for custom home audio builds.

Frequently Asked Questions

What power supply does this board need?
The board requires a DC supply between 16 and 38V and should be able to provide around 10A for full output capability.

Can it play music from a USB drive?
Yes, the unit supports U disk playback and can display playlists when a compatible U disk is connected.

Does it include protection against faults?
Yes, the amplifier has protections for short circuit, overcurrent, overheating, undervoltage and reverse connection with automatic recovery where applicable.