Bluetooth Amplifier Board 2.1, 15W x2 +30W - App Control & Tone EQ

In this review of the Bluetooth Amplifier Board 2.1, the bottom line is simple: this board is for DIY speaker builders who want flexible power, tone control and modern connectivity without fuss. The reviewer found the standout advantage is the mobile APP support that goes beyond basic Bluetooth pairing, letting users tweak sound, rename the device and manage prompt tones, while the board's wide 9-24V compatibility and included DC adapter plug make it easy to integrate into a variety of projects.

Key Features

• APP Control: The companion app allows adjusting sound effects, changing the Bluetooth name and password, and toggling prompt tones for a tailored listening experience.
• 2.1 Channel Output: Delivers 15W per stereo channel plus a 30W sub channel so small speaker builds benefit from defined mids and fuller bass.
• Treble and Bass Adjustment: Physical knobs provide quick, hands-on tone shaping when fine tuning onboard EQ is preferred over app control.
• Input Memory: The board remembers the last input (Bluetooth or AUX), so the unit resumes in the preferred mode after power cycles.
• Wide Voltage Range: Works from DC 9V to 24V, giving flexibility to power it from a variety of adapters and battery solutions.
• High Compatibility: Standard 5.5x2.1mm DC plugs are supported and a DC conversion plug is included to reduce setup friction.

Who It's For

This board is aimed at hobbyists and DIY speaker builders who want an affordable way to add Bluetooth streaming and adjustable tonal control to bookshelf or desktop speaker projects. The mix of app and physical controls suits people who like to experiment with sound signatures or need to rename or secure their Bluetooth unit.

It is less suited for audiophiles demanding high-end discrete component amplification or installers who require rack-mount hardware and professional connections; the board is optimized for compact consumer and DIY use rather than pro studio or high-power PA systems.

Pros & Cons

Pros

• App functionality gives detailed control over sound effects, Bluetooth name and prompt tones.
• Clear 2.1 channel configuration (15W+15W+30W) provides usable power for small speaker enclosures.
• Physical treble and bass knobs offer immediate tonal adjustment without opening the app.
• Wide 9-24V input and included DC conversion plug simplify power options for DIY builds.

Cons

• Not intended for high-end pro audio installations; performance is tuned for consumer DIY projects.
• Documentation for the app and advanced settings may require experimentation to fully master.

Specifications

Brand	Gugxiom
Channels	2.1 (15W + 15W + 30W)
Input Voltage	DC 9V to 24V
Inputs	Bluetooth and AUX
Controls	Treble and Bass knobs plus app digital controls
Compatibility	5.5x2.1mm DC adapters; conversion plug included

Our Verdict

For DIYers building compact speakers who want streaming, on-board tone shaping and flexible power options, this Bluetooth Amplifier Board delivers strong value. The APP plus physical EQ give both deep and immediate control, and the 2.1 output is a practical balance of clarity and bass for small enclosures, making it a sensible choice for hobby projects.

Frequently Asked Questions

Does the board work with a 12V car battery?
Yes. The board supports DC 9V to 24V, so a 12V supply such as a car battery or vehicle power source is compatible when connected via the correct adapter.

Can the Bluetooth name and password be changed?
Yes. The developed app lets you set the Bluetooth name and password for the amplifier board for easier identification and basic access control.

Will it remember AUX if that was the last input?
Yes. The board includes an input memory function so it returns to the AUX input if that was the last mode used.