ARRAROWN ZK-1001U Mono Bluetooth 5.3 Amplifier – 100W, TWS, USB/AUX

Overview for DIY Audio Enthusiasts

The ARRAROWN ZK-1001U is a compact mono amplifier board designed for home and outdoor speaker projects. Powered by the TPA3116D2, it delivers up to 100W into passive speakers in the 3–8 ohm range, with a distortion rate under 0.3%. It supports Bluetooth 5.3 with AAC decoding and low latency, plus multiple wired inputs. The device is intended for DC operation within a wide range and should not be connected to AC mains. This setup is ideal for battery-powered builds and portable sound rigs where space and weight matter, without sacrificing clarity or control.

Power, Stability, and Outdoor Readiness

The ZK-1001U includes an auto-boost circuit that intelligently manages input voltage to maintain a steady output. It accepts common DC sources and can adapt to 19V or 24V depending on the switch setting, which helps keep audio consistent when you’re off-grid or using battery packs. Note that while the board tolerates a broad input window (7–24V), it should not be fed from AC mains and 24V batteries are not recommended for this module.

• Auto-boost helps sustain dynamic range as battery voltage fluctuates.
• Designed for battery-powered projects with portable speaker setups.

Connectivity that Fits Your Setup

Choose from four input options: AUX, USB flash drive, USB sound card, and Bluetooth wireless connection. The upgraded Bluetooth 5.3 module delivers low latency and reliable range up to roughly 15 meters, making it convenient to stream from phones, tablets, or laptops. In TWS BOX mode, two ZK-1001U boards can be paired to realize left-right stereo, expanding possibilities for compact, modular systems.

Sound Tuning at Your Fingertips

Despite its small footprint, the ZK-1001U carries a HiFi-oriented path thanks to the TPA3116D2 chip. Users can tailor the listening experience with treble and bass adjustments, achieving crisper highs and more defined lows to suit different music styles. The unit’s multi-function knob handles volume, playback, and mode switches for intuitive control during setup or ongoing use.

What You Get and How to Use It

• Mono 100W output into 3–8Ω passive speakers; ideal for DIY projects and compact PA builds.
• Bluetooth 5.3 with AAC decoding and low latency for smooth wireless playback.
• Four inputs: AUX, USB, USB sound card, and Bluetooth; optional TWS box pairing for stereo.
• Built-in boost circuit for outdoor or battery-powered operation; DC power range 7–24V with AC not supported.
• Treble and bass controls plus a responsive multi-function knob for on-the-fly adjustments.