Bluetooth Amplifier Board TDA7492P 225W V2.1 - Compact Stereo Power

In this review of the Bluetooth Amplifier Board TDA7492P HF63, the bottom line is simple: this is a compact, affordable stereo amplifier board for hobbyists and DIY audio projects who need reliable Bluetooth pairing plus a wired AUX option. The reviewer found the TDA7492P chip and Bluetooth V2.1 module deliver clean, dependable output at 2 x 25W into typical 8 ohm speakers, and the board accepts DC 10-25V through a 2.1mm socket, which makes it easy to integrate into small powered speaker builds. It is best for users who value practical performance and long service life over fancy features.

Key Features

• Output Power: The board provides 2 x 25W stereo output which is enough for bookshelf or desktop speakers and casual room listening.
• Flexible Speaker Load: It supports 4, 6, 8 and 16 ohm speakers, with 8 ohm being the most balanced option for performance and heat.
• Bluetooth + AUX: Bluetooth receiver V2.1 gives wireless input and a dedicated AUX input allows wired sources to be used without extra adapters.
• Wide Supply Range: The DC 10-25V input via a 2.1mm socket makes it compatible with many small power supplies and battery setups for portable use.
• Trusted Amplifier Chip: The TDA7492P power amplifier chip provides stable audio drive and the PCB uses quality components intended to extend service life.
• Protection Considerations: The board is designed with reverse connection protection to reduce risk from incorrect power hook-up during DIY assembly.

Who It's For

The Bluetooth Amplifier Board is aimed at electronics hobbyists, DIY speaker builders, and small workshop projects that need a simple, compact stereo amplifier with both wireless and wired inputs. It fits well into custom bookshelf speakers, desktop audio rigs, or lightweight portable systems where a modest 25W per channel is sufficient.

Those seeking high-end audiophile fidelity, multi-channel home theater amplification, or integrated features like tone controls, digital inputs, or higher continuous power should look elsewhere. This board is a focused, no-frills solution rather than a full-featured receiver.

Pros & Cons

Pros

• Compact stereo design delivers usable 25W+25W output for small speakers.
• Bluetooth V2.1 plus AUX input offers flexible wired and wireless sources.
• Wide 10-25V supply range and 2.1mm socket make power choices simple.
• Built with quality components and PCB for long service life and reliability.

Cons

• Power rating is modest and not suited for large rooms or high-SPL applications.
• The feature set is basic, lacking onboard tone controls or digital inputs.

Specifications

Model	HF63
Amplifier chip	TDA7492P
Audio input	Bluetooth receiver V2.1, AUX interface
Supply voltage	DC 10-25V (2.1mm socket)
Output power	2 x 25W
Output impedance	4 / 6 / 8 / 16 ohm (8 ohm recommended)
Board size	72 x 48 mm (2.83 x 1.89 in)

Our Verdict

The HF63 Bluetooth Amplifier Board is a practical, value-oriented choice for DIYers who need a compact stereo amp with wireless convenience and a wired AUX input. Its TDA7492P chip, flexible supply range, and solid construction make it a dependable core for small speaker projects, even though it lacks advanced receiver features and high power for large rooms.

Frequently Asked Questions

Can this run from a 12V battery?
Yes, the board accepts DC 10-25V so a 12V battery or regulated 12V supply will work with the 2.1mm socket.

What speaker impedance is best?
It supports 4, 6, 8 and 16 ohm loads, with 8 ohm recommended as the best balance of power and heat.

Does it include Bluetooth pairing and AUX simultaneously?
Yes, the module provides Bluetooth V2.1 connectivity and a separate AUX input for wired sources, allowing flexible switching between inputs.