100W+100W Bluetooth Amplifier Board 2.0 Channel Stereo - Compact DIY

In this review of the 100W+100W Bluetooth Amplifier Board, the bottom line is simple: it's a compact, affordable way to add clean stereo power to DIY speakers and small home theater projects. The reviewer found the single biggest reason to buy is the combination of the TPA3116D2-based amp chip and wide DC input range, which delivers solid 100w+100w output from common 9V to 24V adapters while keeping distortion low during extended use.

Key Features

• TPA3116D2 chip: Provides clear sound with AM interference suppression and keeps total harmonic distortion under 0.1% during long runtime.
• Wide voltage range: Runs from DC 5V to 24V so it can be powered by 9V, 12V, 15V, 19V or 24V supplies for flexible installations.
• Reliable connectors: Copper DC connectors and barrier terminal blocks handle high current without heating or damaging speaker wires.
• Dual inputs: Bluetooth 5.0 wireless (password free) and 3.5mm wired input let users switch between near 49 ft wireless range and a wired source.
• Protection features: Built-in over temperature, short circuit, reverse connection, clipping and over/undervoltage protection keep the amplifier and speakers safer.
• Compact cooling: A large heatsink and low-ripple capacitor array help maintain stable output under continuous high-power use.

Who It's For

This amp suits hobbyists building DIY bookshelf or portable speakers, car audio tinkerers, and small home theater builders who need a compact stereo amplifier with reliable protection and flexible power options. The board is useful when a small footprint and strong heat dissipation are required.

Those who need wireless features without pairing complexity will like the password-free Bluetooth connection, but audiophiles seeking premium DACs or ultra-low noise sources may prefer a higher-end integrated amplifier with separate digital inputs and larger chassis for additional shielding.

Pros & Cons

Pros

• High continuous power capability with 100w+100w output across a wide DC range.
• Good thermal design with a large heatsink and low-ripple capacitors for stable performance.
• Convenient wiring: DC jack, barrier terminals and printed interface labels speed installation.
• Robust safety features protect the board and connected speakers in adverse conditions.

Cons

• Bluetooth range and performance can be affected if the board is placed near WiFi signals, so location matters.
• Requires a sufficiently powerful adapter; using an underpowered supply can cause distortion.

Specifications

Model	ZK-1002L
Output Power	100w + 100w
Input Voltage	DC 5V - 24V
Speaker Impedance	4 - 8 ohm
Bluetooth Version	BT 5.0 (up to 15m)
Size	69 x 53 x 22 mm
Included Items	Protective shell, DC jack with cable, screwdriver, knob, power block

Our Verdict

The EPLZON 100W+100W Bluetooth Amplifier Board is a practical, value-oriented amp board for DIY speakers and small audio projects. With strong protection features, flexible power options and a low-distortion TPA3116D2 design, it delivers reliable stereo power when paired with an appropriate adapter and proper placement away from strong WiFi sources.

Frequently Asked Questions

What power supply should I use?
Use a DC adapter with sufficient wattage at 9V to 24V depending on desired output; a supply rated for the combined speaker load prevents distortion.

Does Bluetooth require a password?
No, the Bluetooth connection is password free and supports typical ranges up to about 49 ft in open space.

Is the board protected against faults?
Yes, it includes over temperature, short circuit, reverse polarity, clipping, overvoltage and undervoltage protection.