2 x 50W Class D Bluetooth Stereo HiFi Amplifier Board - TSA3118

In this review the TinySine TSA3118 proves to be a compact, no-nonsense board for anyone building or upgrading a small Hi-Fi or multi-room setup. The bottom line: it delivers reliable 2 x 50W output from a class-D design and convenient Bluetooth pairing, making it a sensible choice for hobbyists and installers who want clean power and wireless audio without fuss. Setup is straightforward and the board is flexible about power sources, so it fits projects where space and budget matter.

Key Features

• Class-D architecture: Based on TPA3116D2 the board gives efficient, low-heat amplification well suited to sealed enclosures and continuous use.
• 2 x 50W output: Each channel provides 50W of nominal power so it can run two speakers or drive four if bridged appropriately across channels.
• Wide DC input range: Accepts DC 10V-24V which lets you power it from many common adapters or battery systems for flexible installations.
• Bluetooth 4.0 pairing: The AudioB module appears as TSA3118 with no PIN required, enabling quick streaming from phones and computers.
• Speaker compatibility: Designed to drive 4 or 8 passive speakers, making it useful for compact Hi-Fi, desktop, or small room audio setups.

Who It's For

This board is aimed at DIY audio builders, hobbyists, and installers who need a compact amplifier with wireless input and reliable continuous power. It works well in small bookshelf systems, desktop rigs, soundbars, and multi-room installs where a simple Bluetooth source and efficient class-D amplification are desirable.

People who want a finished consumer amplifier with enclosure, remote control, or advanced DSP should look elsewhere; this product is a bare board best suited to those comfortable with wiring speakers and providing a suitable DC supply. It is not a full consumer-ready unit with a built-in case or display.

Pros & Cons

Pros

• Clean, efficient class-D design keeps heat and power draw low during long sessions.
• Convenient Bluetooth pairing with no PIN makes streaming quick from phones or PCs.
• Flexible power input of DC 10V-24V supports a range of adapters and battery solutions.

Cons

• Sold as a bare board so it requires external mounting, wiring, and a power supply for safe use.
• No advanced onboard controls or display beyond Bluetooth and basic inputs, so additional components may be needed for refined control.

Specifications

Model	TSA3118
Output Power	2 x 50W nominal per channel
Amplifier Type	Class-D (based on TPA3116D2)
Bluetooth	AudioB module, Bluetooth 4.0, appears as TSA3118
Power Supply	DC 10V-24V
Speaker Load	Compatible with 4 or 8 passive speakers

Our Verdict

The TSA3118 is a practical, value-oriented amplifier board for DIY audio projects and small Hi-Fi installations. With reliable 2 x 50W outputs, wide DC input tolerance, and easy Bluetooth pairing, it gives good performance for the price as long as you are prepared to handle external wiring and mounting. It is a smart choice when efficiency, Bluetooth convenience, and straightforward power are the priorities.

Frequently Asked Questions

Can this board be powered by a 12V car battery?
Yes; the amplifier accepts DC 10V-24V so a 12V car battery or regulated 12V adapter will power it provided connections are secure.

Does the Bluetooth module require a PIN?
No; the AudioB Bluetooth module shows up as TSA3118 and pairs without a PIN for quick streaming from phones and computers.

Can it drive multiple passive speakers?
Yes; the board is designed to drive 4 or 8 passive speakers, but ensure speaker impedance and wiring match your setup.