DAMGOO ZK-TB21 Bluetooth Amplifier Board — 50W+50W+100W Output, 12-24V, Bluetooth 5.1, DAJUNGUO ZK-TB21 Black

Overview

The DAMGOO ZK-TB21 is a compact 2.1 channel Bluetooth amplifier board engineered to deliver robust, immersive sound in a small form factor. With Bluetooth 5.1 and a 3.5 mm AUX input, it’s easy to connect a wide range of devices—from smartphones to TVs and laptops—so you can elevate your everyday listening setups without clutter.

Power and performance

Driven by the TPA3116D2 HIFI chip, this board provides two main channels plus a powerful 100 W path for bass-enhanced configurations. A THD specification of ≤ 0.1% indicates clean, faithful sound across a broad DC input range of 12–24 V, making it adaptable for home, workshop, or vehicle use.

• Two 50 W channels plus a 100 W boost path for dynamic, room-filling audio
• THD ≤ 0.1% for clear and accurate reproduction
• Wide 12–24 V DC input supports multiple installation scenarios

Connectivity and range

The design includes both an onboard IPX antenna base and an external IPX (MHF1) antenna, improving signal strength and range without the need for soldering. This makes placement and adjustments easier in different room layouts.

• Bluetooth 5.1 plus 3.5 mm AUX inputs offer flexible source options
• Dual antennas improve stability and reach
• Customizable Bluetooth name to suit your setup, e.g., “DAJUNGUO ZK-TB21 Black”

Safety and support

Practical protections guard against overheating, reverse polarity, and voltage fluctuations, helping maintain reliable performance during regular use. The seller highlights responsive after-sales support and a commitment to customer satisfaction.

Real-world use cases

Envision this board powering a compact home theater booster, a desk-side audio workstation, or a portable speaker rig for events. The flexible power options, easy source switching, and name customization contribute to a setup that can grow with your needs while staying streamlined and user-friendly.