100W+100W Bluetooth Amplifier Board with Treble and Bass Control - DIY

In this review the EPLZON 100W+100W Bluetooth Amplifier Board is examined as a DIY-friendly stereo amp board for hobbyists and small home audio systems. The single biggest reason to buy is its combination of dual TPA3116D2 chips delivering clear 100W per channel output while offering dedicated treble and bass control knobs to shape sound without requiring external EQ gear. It is a compact, versatile board that supports both Bluetooth 5.0 wireless input and a 3.5mm AUX jack for devices without Bluetooth, and it includes multiple protection features that make it simple to integrate into custom speaker projects.

Key Features

• Dual 100W output: The left and right channels each provide up to 100W output for a powerful stereo experience suitable for medium-sized rooms and outdoor gatherings.
• Treble and bass control: Three independent knobs for high, low, and volume let users tailor sound without extra hardware, useful for music and movie playback.
• Bluetooth 5.0 and AUX inputs: Wireless streaming with longer range up to about 49 ft in open environments plus a 3.5mm jack for wired sources when Bluetooth is not used.
• High-fidelity amplifier chips: Dual TPA3116D2 chips offer ultra-low distortion and AM interference suppression for clearer audio reproduction.
• Wide voltage support: Runs on DC 9-24V and works with 12-24V/5A or higher supplies, allowing flexible power options for different builds.
• Comprehensive protection: Built-in protections include over temperature, short circuit, reverse connection, clipping, overvoltage and undervoltage safeguards to protect speakers and the board.

Who It's For

The EPLZON amp board is aimed at DIY audio builders, hobbyists converting passive speakers to active ones, and users who want a compact stereo amplifier with tone controls for home, party, or small outdoor use. Its treble and bass knobs and Bluetooth plus AUX inputs make it a practical choice for people assembling custom bookshelf or portable speaker systems.

Those who need ultra-compact class-D modules with lower power, integrated enclosure solutions, or advanced digital DSP features should look elsewhere; this board focuses on straightforward analog tone control and robust power output rather than built-in wireless multiroom features or turnkey speaker housings.

Pros & Cons

Pros

• Generous output of 100W per channel for lively, room-filling sound.
• Physical treble and bass controls let listeners dial tone quickly without extra equipment.
• Bluetooth 5.0 plus AUX provides flexible connectivity for most source devices.
• Multiple protection circuits improve reliability during DIY builds.

Cons

• Requires an external DC power supply (DC 9-24V, recommended 12-24V/5A or above) which adds cost and setup steps.
• Not a finished product with enclosure or speaker protection beyond the board-level safeguards, so DIY skill is needed to mount and wire it safely.

Specifications

Our Verdict

The EPLZON 100W+100W Bluetooth Amplifier Board is a solid value for DIYers who want a powerful, tone-adjustable stereo amp with modern wireless connectivity. Its dual TPA3116D2 topology and protective features make it reliable for custom speaker projects, and the physical treble and bass knobs deliver immediate tonal control. Purchase this board if you can supply an appropriate DC power source and plan to mount it in a custom enclosure for home or portable use.

Frequently Asked Questions

Does it support Bluetooth and wired input at the same time?
Use either Bluetooth or the 3.5mm AUX input; when AUX mode is used, ensure the Bluetooth connection to the module is disconnected to avoid signal conflict.

What power supply is required?
It accepts DC 9-24V; a 12-24V supply rated at 5A or higher is recommended to reach the higher output power ranges.

Will it work with 4 ohm speakers?
Yes, the board supports 4-8 ohm speakers and is recommended for speakers between 20-200W per channel.