ZK-TB21 TPA3116D2 Bluetooth 5.0 Subwoofer Amplifier Board 50W × 2 + 100W 2.1 Channel – Voltech Electronics

Product Description

The ZK-TB21 TPA3116D2 Bluetooth 5.0 Amplifier Board is a compact and powerful 2.1 channel Class D digital amplifier, delivering 50W + 50W stereo output along with a dedicated 100W subwoofer channel. This makes it a perfect solution for home theater systems, desktop audio setups, car audio upgrades, and DIY sound projects.

Powered by the TPA3116D2 chipset, the ZK-TB21 offers high efficiency, strong bass performance, and ultra-low distortion, even at high volumes. With Bluetooth 5.0 wireless connectivity, you can stream music seamlessly from smartphones, laptops, or tablets. It also supports AUX input, giving you multiple ways to connect your devices.

Available now at Voltech Electronics, this amplifier board is a great choice for Bangladeshi audiophiles, hobbyists, and sound system builders looking for a budget-friendly, high-quality 2.1 amplifier solution.

Key Features

• Power Output: 2 × 50W (stereo) + 100W (subwoofer)

• Chipset: TPA3116D2 Class D amplifier

• Channel Type: 2.1 (stereo + subwoofer)

• Connectivity: Bluetooth 5.0 + AUX input

• Audio Quality: Clear highs, detailed mids, and powerful bass

• Protection Features: Short-circuit, overheating, and over-voltage protection

• Applications: DIY speakers, home theater, desktop audio, car sound systems

• Design: Compact, lightweight, and energy-efficient

• Official Availability: Sold in Bangladesh by Voltech Electronics