DAMGOO TB21 2.1 Channel Subwoofer Amplifier Board – 50W+50W+100W, Bluetooth 5.0, Treble & Bass Control, DC 12-24V, DIY Wireless Speakers AMP

Powerful 2.1‑channel amplification for DIY wireless speakers

The DAMGOO TB21 amplifier board is a compact, high‑power solution designed to drive a subwoofer and satellite speakers with clarity and punch. Built around dual TPA3116D2 chips, it delivers strong, continuous output across a 2.1 channel setup and maintains low distortion (THD ≤ 0.1% under typical loads). With a wide DC input range of 12–24 V, TB21 fits a variety of power sources—from portable packs to automotive or desktop supplies—making it a versatile core for your DIY audio projects.

Whether you’re upgrading a bookshelf system, building a compact home theater, or crafting a custom wireless speaker, TB21 offers the performance and flexibility to shape sound without a bulky rack. Its small footprint makes it easy to tuck inside enclosures, behind furniture, or inside a dedicated cabinet, while still delivering meaningful headroom for lively listening sessions.

Sound shaping and easy connectivity

A dedicated treble and bass control lets you tailor tonal balance to your room and music, enabling brighter highs or deeper lows to suit your preferences. The block feels responsive, so you can adjust midrange and bass with confidence while testing different speaker placements. In practice, this control helps you approach cinematic impact without swapping components.

• 2.1-channel configuration with 50W+50W for left/right channels and a 100W sub path, offering ample headroom for medium rooms.
• Tweaks to treble and bass enable room‑sensitive sound tuning from a single board.
• Low THD (≤0.1%) helps preserve detail at higher listening levels.

Connectivity, protection, and practical DIY design

TB21 provides flexible input options to suit different setups. Bluetooth 5.0 supports wireless streaming from compatible devices, with a practical open‑air range up to about 49 feet. If Bluetooth isn’t available, you can connect via the 3.5 mm AUX input for a wired source. The platform also supports a broad 12–24 V DC input range for varied power scenarios, including portable or automotive projects.

• Bluetooth 5.0 plus AUX input for versatile source options.
• Wide 12–24 V input to accommodate diverse power arrangements.
• Protection features including overheat, reverse polarity, over‑voltage, and under‑voltage safeguards.

Supportive build and service

The TB21 board is designed for straightforward wiring and testing, with a focus on practical DIY workflows. Its password‑free pairing streamlines setup, and DAMGOO backs the product with accessible after‑sales support, available around the clock to help with questions or issues and to ensure a satisfying experience.