200W Amplifier Board 2.0 Channel Stereo AMP Board - DIY Bluetooth AMP

In this review of the 200W Amplifier Board 2.0 Channel Stereo AMP Board, the bottom line is simple: it is a compact, versatile DIY amplifier for people who want a clean, loud stereo output without complicated setup. Designed for hobbyists building wireless speakers, the board delivers 100W+100W output from a DC 9-24V supply and combines Bluetooth 5.1 and AUX inputs for broad compatibility. The single multifunctional knob and password free Bluetooth pairing make daily use straightforward, while the smart protection system helps prevent damage during extended projects.

Key Features

• High output power: The board provides 100W per channel for robust stereo playback suitable for medium to large rooms.
• Multiple inputs: Built-in Bluetooth 5.1 plus AUX, USB sound card and USB flash drive support let users connect phones, laptops and other players easily.
• Wide voltage range: Operates from DC 9-24V so it works with a variety of power adapters and battery setups for DIY speaker projects.
• All in 1 knob: The multifunction knob handles pause, skip, power on/off and reset, simplifying control without extra buttons.
• Smart protection: Over-voltage, under-voltage, overheating and short-circuit protection reduce the risk of component failure during builds.
• Support and pack-in tools: The package includes the amplifier, a screwdriver and an instruction sheet, and the seller offers lifetime technical support.

Who It's For

The board suits DIY audio enthusiasts, makers and hobbyists who want a high-power, compact amplifier module to build Bluetooth-enabled bookshelf or portable speakers. Its flexible input options and 9-24V operation make it a good choice for projects using external power adapters or custom battery packs.

It is less appropriate for people who need an integrated enclosure, power adapter or a plug-and-play home theater receiver with remote control; a finished amp or powered speaker would be a better fit for those users.

Pros & Cons

Pros

• Delivers solid stereo power with 100W per channel for clear, punchy sound.
• Easy connectivity through Bluetooth 5.1 and AUX plus USB options for many sources.
• Multifunctional knob simplifies control and reduces the need for extra components.
• Built-in protection and lifetime tech support provide peace of mind during DIY builds.

Cons

• Power adapter is not included, so buyers must select a compatible DC 9-24V supply separately.
• As a bare board, it requires basic soldering or wiring and an enclosure for finished installations.

Specifications

Output Power	100W + 100W
Channels	2.0 stereo
Input Types	Bluetooth 5.1, AUX, USB sound card, USB flash drive
Operating Voltage	DC 9-24V
Control	All-in-1 multifunctional knob (pause, skip, power, reset)
Protection	Short circuit, over-voltage, under-voltage, overheating, clipping
Package Includes	Amplifier board, screwdriver, instruction sheet (power adapter not included)

Our Verdict

The 200W Amplifier Board is a practical, good-value component for DIY speakers and hobby projects because it pairs serious per-channel power with flexible inputs and built-in protection. Buyers who can provide their own DC power and enclosure will find it delivers reliable performance and easy Bluetooth pairing, making it a smart choice for custom wireless speaker builds.

Frequently Asked Questions

Does the amplifier require a specific power supply?
The board runs on DC 9-24V and does not include a power adapter, so choose a stable adapter within that range sized for the total current draw.

Can it connect to a phone via Bluetooth?
Yes, the amplifier supports Bluetooth 5.1 and pairs without a password for simple phone connections.

Is the amplifier protected against overheating and shorts?
Yes, it includes smart protection for short circuit, over-voltage, under-voltage, overheating and clipping to protect the board and connected speakers.