Bluetooth 5.0 2.1 Channel 50W+50W+100W Subwoofer Amplifier Board

Our review of this Bluetooth 5.0 2.1 channel amplifier board finds it best for DIY home theater builders and hobbyists who need a compact, powerful amp with versatile inputs. The board uses the TPA3116D2 HIFI chip and delivers a clear, full sound across paired satellite channels and a dedicated subwoofer output, making it a straightforward choice for small rooms where deep bass and clean treble matter. Setup is direct: Bluetooth 5.0 pairs quickly and a 3.5mm AUX input offers a wired fallback when needed.

Key Features

• TPA3116D2 stereo output: Provides 50W per left and right channel plus 100W to a subwoofer for a true 2.1 setup that fills a small room.
• Bluetooth 5.0 and AUX input: Fast wireless pairing and a 3.5mm jack let users choose wireless streaming or wired connection without extra converters.
• Wide DC input range: Accepts DC 12-24V so it works with common bench supplies and many battery setups for flexible installation.
• Protection suite: Built-in overheat, reverse connection, short circuit and over/under voltage protection protects speakers and the board in real-world use.
• Independent bass and treble controls: Dedicated knobs for high and low adjustments let you tailor sound for music or movie playback without external EQ hardware.
• Robust connectors: Copper DC connectors and barrier terminals handle higher current and simplify wiring for longer-term reliability.

Who It's For

This board is ideal for DIYers building compact home theater systems, small powered speaker boxes, or square speakers where a true 2.1 output is desired. It suits users who want the convenience of Bluetooth streaming plus the stability of a 3.5mm wired input and who can provide an adequate DC supply to reach advertised power levels.

It is not intended for those who need a full-featured consumer receiver with source switching, remote control, or network streaming services. Buyers who require extremely high-fidelity audiophile circuitry or multi-zone amplification should look at larger, dedicated amplifiers instead.

Pros & Cons

Pros

• Clear, full sound courtesy of the TPA3116D2 chip with noticeable low-end support from the 100W sub output.
• Reliable Bluetooth 5.0 connectivity that pairs quickly and operates at longer range than older Bluetooth versions.
• Comprehensive protection features and sturdy connectors make it practical for repeated DIY use.

Cons

• Power output depends heavily on the supplied DC voltage and current, so buyers must provide a capable power source to hit peak output.
• No remote control or onboard display for source and level feedback, which may be limiting for some living-room setups.

Specifications

Our Verdict

The Bluetooth 5.0 2.1 amplifier board is a strong value for DIY home theater builders who need a compact, powerful module with flexible inputs and reliable protection. With the TPA3116D2 chipset and dedicated subwoofer output, it delivers solid low-end presence and clear stereo output at a budget-friendly price, provided you supply an adequate DC source. It is a practical, cost-effective way to add hi-fi 2.1 sound to small rooms and custom speaker projects.

Frequently Asked Questions

Can I use Bluetooth and AUX at the same time?
The board gives priority to Bluetooth when both inputs are present; disconnect Bluetooth to use AUX exclusively.

What voltage do I need for full output?
Maximum recommended operation is within DC 12-24V and sufficient current; power output depends on stable voltage and current capacity.

Does it protect speakers from faults?
Yes, the board includes overheat, reverse connection, short circuit and over/under voltage protection to reduce risk to connected speakers.