TDA7492 50W x2 Digital Stereo Amplifier Module - Bluetooth V4.0

In this review the TDA7492 50W x2 Digital Channel Amplifier Module is evaluated as a hands-on option for DIY audio builders and hobbyists who want to turn passive speakers into Bluetooth-enabled systems. The bottom line: this board pairs a reliable TDA7492 power stage with an NE5532 preamp and CSR8635 Bluetooth V4.0 to deliver clear, punchy stereo output from a compact module, and it is best for those who can supply a suitable DC source and do basic wiring. It is not a finished enclosure product, but it does offer a solid path to higher output without analog crossover distortion.

Key Features

• Digital amplification: The TDA7492 chip delivers a higher overload capacity than typical analog amps and avoids crossover and transient intermodulation distortion for cleaner peaks.
• Bluetooth V4.0 input: The CSR8635 receiver provides convenient wireless audio input so existing speakers can be converted into Bluetooth speakers without extra gear.
• Wide voltage range: Accepts DC 8V to 25V input, offering flexibility for 12V and 24V systems and a variety of power supply choices.
• NE5532 preamp: The onboard NE5532 improves input stage fidelity so the amplified sound retains detail and musicality.
• Speaker compatibility: Supports 4, 6 and 8 ohm speakers, making it suitable for many bookshelf and compact speaker drivers.
• Microphone included: The module includes a microphone input for basic voice pickup or hands-free use when paired via Bluetooth.

Who It's For

The module is ideal for DIY enthusiasts, electronics hobbyists and small workshop projects where the goal is to upgrade passive speakers or build a compact Bluetooth-enabled amplifier. It is especially useful when a modest but robust 50W per channel output is needed without adding complicated crossover networks.

It is less suitable for users who expect a finished, plug-and-play stereo amplifier with case, front panel controls and certified safety approvals; those buyers should look for a finished integrated amp or powered speakers. Also, if you need multi-room network features or high-resolution codecs beyond standard Bluetooth audio, consider alternatives.

Pros & Cons

Pros

• High output capability per channel with digital design that resists crossover distortion.
• Built-in Bluetooth V4.0 receiver makes wireless pairing simple for phones and tablets.
• Flexible DC input range supports common power supplies and battery systems.
• NE5532 preamp improves sound clarity compared with bare power stage modules.

Cons

• Module form factor requires user enclosure and wiring; not a consumer-ready finished amplifier.
• No advanced wireless codecs or network streaming features beyond standard Bluetooth audio.

Specifications

Our Verdict

The TDA7492 50W x2 module is a pragmatic choice for hobbyists who want a compact, high-output amplifier board with Bluetooth convenience and improved preamp fidelity. It represents strong value when you factor in the NE5532 front end and CSR8635 receiver, but it requires basic electronics skills and an external enclosure to reach its full potential.

Frequently Asked Questions

Can this board drive bookshelf speakers?
Yes, the board supports 4, 6 and 8 ohm speakers and can drive typical bookshelf speakers when paired with a suitable power supply.

What power supply does it need?
The board accepts DC 8V to 25V; a stable 12V or 24V supply of sufficient current is recommended depending on speaker load and desired volume.

Does it include Bluetooth and a microphone?
Yes, the module includes a CSR8635 Bluetooth V4.0 receiver and a microphone input for basic hands-free use.