Zailen Audio TW100U 2-Pack 100W Mono Amplifier Board with Built-in Boost (19V/24V), TWS Pairing, Bluetooth 5.3, AUX/USB

Overview

The Zailen Audio TW100U set delivers compact, high‑performing mono amplifier boards designed to power DIY audio projects with clarity and flexibility. Each module leverages the TPA3116D2 Class D chipset to deliver clean, detailed output, while a built‑in boost circuit helps sustain strong performance from varied power sources. This 2‑pack provides a scalable solution for small to mid‑sized speaker setups, offering real‑world headroom without overpowering your build.

Wireless and wired versatility

Two standout capabilities define the TW100U: wireless pairing and multi‑input convenience. When paired, two units can form a wireless left‑right stereo link, allowing you to assemble a true wireless stereo system without messy wiring. For source flexibility, you can choose Bluetooth 5.3, 3.5 mm AUX, or USB inputs, selecting sources with a simple physical switch for intuitive operation.

• Bluetooth 5.3 with an external antenna option for stronger, more reliable connections across larger rooms.
• Dedicated input switching supports Bluetooth, AUX, and USB for versatile configurations.

Power, performance, and practicality

The built‑in boost circuit is designed to raise voltage to 19V or 24V, helping maximize output when the supply is below ideal levels. This design aims to provide headroom for dynamic passages and varied speaker loads, which can help you explore different enclosure and driving approaches in DIY builds.

• Built‑in boost circuit enables higher output potential from 12–24V supplies.
• Low distortion and low noise deliver a clear, detailed sound profile suitable for passive speakers.

What’s included and practical notes

Each package includes two TW100U amplifier boards and a Bluetooth antenna base. The antenna base supports attachment of an external antenna to maximize stability in challenging installations, such as larger rooms or open spaces. The boards are designed to fit a range of DIY projects, from compact Bluetooth speakers to small home audio systems, offering a balance between size, power, and ease of use.

Benefits at a glance

• Two independent mono amplifier boards for scalable configurations.
• Built‑in boost circuit for elevated output with suboptimal voltages.
• TWS wireless pairing to create a wireless stereo link between modules.
• Multiple input modes: Bluetooth 5.3, AUX, USB, with a tactile mode switch.
• Operation from 12–24V DC with potential 19V/24V boost for better headroom.