2 x 50W + 100W Class D 2.1 Bluetooth 4.0 Amplifier Board with Filter and Volume Controls

This TPA3116D2.1-BT amplifier module is a compact yet powerful solution for adding high-quality three-channel audio amplification to your electronic projects. Designed around the renowned Texas Instruments TPA3116D2 chip, this amplifier module delivers clean, efficient Class D amplification suitable for a wide range of applications.

Ideal for DIY audio builds, portable speaker systems, or upgrading existing sound setups, this module provides ample power to drive multiple speakers with clarity. Whether you are constructing a home cinema system, a multi-room audio installation, or a custom boombox, the three-channel output offers flexibility for stereo plus subwoofer configurations. Its compact dimensions (100 x 100 x 23 mm, excluding the 15.3 mm potentiometer shaft) make it easy to integrate into enclosures without sacrificing performance.

Technically, the module delivers a nominal 2 × 50 W plus 1 × 100 W at 4 Ω minimum load, with a signal-to-noise ratio of 1 and current limiting protection. Input connectivity is via a 3.5 mm stereo jack or a three-pin line input terminal, while speaker outputs use screw terminals for secure connections. The Class D topology ensures high efficiency and low heat generation, making it reliable for extended use.

This versatile amplifier module is an excellent choice for anyone seeking robust, multi-channel audio amplification in a compact form factor.