Bluetooth Amplifier Board 2x50W 100W Stereo - High Power BT 5.0

Our review of the Bluetooth Amplifier Board looks at whether this compact 2.1 channel board is a practical upgrade for DIY audio builds and small home systems. The bottom line: this board is best for hobbyists and custom installers who need a high power, flexible amplifier with both AUX and wireless input, and an affordable way to drive left, right and a subwoofer from a single PCB. It stands out for its combination of BT 5.0 wireless, adjustable tone controls and protective circuitry that keeps installations reliable.

Key Features

• Input and Output: Supports both AUX and Bluetooth sound sources so you can connect wired devices and phones without extra adapters.
• Subwoofer Support: Built-in subwoofer and stereo left/right outputs let you create a true 2.1 system for fuller low end with separate channels.
• Adjustable Controls: Frequency, volume, treble and bass adjustments give hands-on tonal control to tune the sound to room and speaker choice.
• High Power: Delivers up to 2x50W (100W total) under the DC12-24V range, making it suitable for medium-power speaker setups.
• Protection Features: Anti reverse connection, overheating, overcurrent and short-circuit protection help protect the board and connected speakers.

Who It's For

This amplifier board is ideal for electronics hobbyists, DIY speaker builders and small custom home theater projects who want a compact, high power solution that supports Bluetooth streaming and a dedicated subwoofer output. It works well in desktop speaker rigs, small living room systems and portable enclosures that run from a DC12-24V supply.

People who should look elsewhere include those needing full consumer-grade enclosures with finishing, remote controls or multi-zone features. Also avoid this board if you require certified commercial audio equipment with formal warranties and installation support.

Pros & Cons

Pros

• Clean integration of AUX and BT inputs for flexible source options.
• Dedicated subwoofer output and adjustable tone controls for better bass management.
• Robust protection features reduce the risk of damage during installation and use.
• Wide operating voltage (DC12-24V) for compatibility with many power setups.

Cons

• Not a finished consumer amplifier-requires basic wiring and mounting skills to install properly.
• Documentation and labeling may be minimal, which can slow first-time setup.

Specifications

Item Type	Power Amplifier Board
Channels	2.1 channel (left, right, subwoofer)
Power Output	2 x 50W (100W total)
Working Voltage	DC 12-24V
Bluetooth Version	BT 5.0
Protection	Anti reverse, overheating, overcurrent, short circuit
Material	PCB

Our Verdict

The Bluetooth Amplifier Board is a strong value for DIYers and small-system builders who need high power stereo plus subwoofer support in a compact PCB form. Its combination of BT 5.0, adjustable tone controls and protection features make it a practical choice when you want power and flexibility without a finished enclosure, provided you are comfortable with basic electronics installation.

Frequently Asked Questions

Does this board support wired and wireless sources?
Yes. It accepts both AUX input and Bluetooth 5.0 streaming so you can use phones or a wired source interchangeably.

What power supply does it need?
The board runs from DC 12-24V; choose a supply capable of delivering sufficient current for the speaker load you plan to drive.

Is the subwoofer output active or passive?
The board provides a dedicated subwoofer output as part of the 2.1 configuration for integrating a powered or passive sub depending on your system design.