Audio Power Bluetooth Amplifier Board 50W+50W - Portable Stereo

In this review of the Audio Power Bluetooth Amplifier Board 50W+50W the bottom line is simple: this compact board is for DIY audio builders and small-system installers who need a flexible, efficient stereo amplifier with modern inputs. The reviewer found it especially useful for projects that require Bluetooth reception, TF card or U disk playback and a built-in microphone for handsfree calls. Its single biggest selling point is practical versatility - it combines multiple input options, decent power output and a small heat sink into an affordable, portable package.

Key Features

• Bluetooth reception: Reliable wireless input that lets users stream audio from phones or other Bluetooth sources at a longer transmission distance.
• Multi-format decoding: Native support for FLAC, WAV, MP3 and WMA files means high-resolution and compressed files play without extra converters.
• TF card and U disk playback: Local playback support allows standalone operation without a phone or computer, useful for kiosks and displays.
• Microphone and hands-free calls: Built-in microphone support enables telephone conversation through the amplifier for intercom or basic call handling.
• Remote and IR control: Includes remote control and infrared support for convenient operation from across the room.
• Compact cooling: Integrated heat sink and efficient design keep the unit portable while managing thermal load under typical use.

Who It's For

This board is aimed at hobbyists assembling powered speaker enclosures, small venue installers adding Bluetooth capability to legacy systems, and makers building portable PA or store solicitation systems. The combination of Bluetooth, TF card and U disk playback is handy when a single affordable board must handle multiple source types.

Those who need studiograde amplification or balanced XLR inputs should look elsewhere, as this board is optimized for convenience, portability and consumer-level connections rather than pro audio installations. Also, if you require a fully enclosed amp with chassis and speaker protection circuits built in, a finished amplifier product will be a better fit.

Pros & Cons

Pros

• Flexible input options cover Bluetooth, TF card, U disk and wired sources for varied use cases.
• Supports lossless FLAC plus WAV, MP3 and WMA for better fidelity from local files.
• Remote control and IR support make it easy to operate from a distance in finished builds.
• Built-in microphone adds hands-free call capability, useful for intercom or phone-linked playback.

Cons

• Not a finished consumer amp enclosure, so extra work is needed to mount and protect the board.
• Limited to consumergrade connections and may lack protections expected in higher-end amplifiers.

Specifications

Power output	50W + 50W
Power supply	DC 8-26V
Audio formats	FLAC, WAV, MP3, WMA
Inputs	Bluetooth, TF card, U disk, wired
Controls	Remote control and infrared
Extras	Built-in microphone, heat sink

Our Verdict

The Audio Power Bluetooth Amplifier Board 50W+50W is a practical value for DIYers and smallsystem installers who want an all-in-one receiver and decoder with multiple inputs and handsfree call support. It delivers useful power, multiple playback formats and remote control in a compact package, but requires external mounting and lacks advanced pro audio features.

Frequently Asked Questions

Can it play lossless files from a TF card?
Yes. The board supports FLAC and WAV file decoding from TF card or U disk for higher-quality local playback.

Does it support hands-free phone calls?
Yes. The amplifier includes a microphone input and supports telephone conversation through Bluetooth-connected phones.

What voltage does it need?
The board runs from DC 8-26V, which makes it compatible with a wide range of external power supplies.