ARRAROWN ZK-1001B 100W Mono Bluetooth Amplifier Module

ARRAROWN ZK-1001B is a compact 100W mono Bluetooth amplifier module (sold as a 2-pack) that can pair as a TWS stereo set and powers passive speakers via Bluetooth, AUX or USB with APP control.

This pair of ZK-1001B modules turns passive speakers into smart, high-power drivers without bulky receivers. Each module is a mono-channel amplifier built on a TPA3116D2-class design with Bluetooth 5.1 support, multiple input options, a multifunction control knob and built-in protections. Housed in protective boxes and small enough for tight speaker cabinets, the modules are intended to be versatile building blocks for DIY speaker upgrades, customized bookshelf systems and compact home audio projects.

How does the ZK-1001B create a stereo system from two mono amps?

When you use the two modules together, the TWS BOX function links them so one module acts as left and the other as right, producing a true stereo image from two mono amplifiers. Pairing is done via the control knob or APP so no extra wiring is required beyond speaker connections and power.

• 2-pack supports TWS BOX mode for left/right channel separation
• Bluetooth link handles synchronization and low-latency playback
• Works with passive speakers rated 20–100W and 3–8Ω impedance
• Simple pairing via multi-function knob or mobile APP

What inputs and controls are available on this amplifier?

Each ZK-1001B accepts Bluetooth 5.1, AUX analog input, USB flash drive playback and USB sound card input, so you can feed music from phones, laptops, or stored files. Playback and navigation are handled by a single multifunction knob that controls volume, play/pause, track skip and power.

• Bluetooth 5.1 for reliable wireless range up to ~15 m (49 ft)
• AUX, USB flash drive and USB sound card inputs for wired sources
• Multi-function knob: click to play/pause, double-click next track, triple-click TWS
• APP compatibility for remote control and settings adjustments

How safe and durable is the module for permanent installations?

The ZK-1001B is compact (89 × 45 × 20 mm) and ships in a protective case with multiple protection circuits to suit long-term use in installed speakers. Built-in safeguards reduce risk to the module and connected speakers during irregular power or thermal conditions.

• Over-voltage and under-voltage protection to guard supply issues
• Over-heat and short-circuit protection for safe operation
• Metal or plastic enclosure options to fit compact speaker boxes
• Wide DC input range: 7–24V (recommended 3A+ supply for stable output)

What sound performance should I expect from a mono 100W amplifier?

The board delivers a rated 100W mono output suitable for driving a single passive speaker; distortion is specified below 0.3% thanks to the amplifier chip and upgraded decoding hardware. Expect robust mid/high output from compatible speakers, with stereo separation achieved when using the two-pack in TWS mode.

• 100W mono output per module, ideal for bookshelf or small floor speakers
• Low distortion design for clearer playback at typical listening levels
• AAC Bluetooth decoding and low-latency performance for audio/video sync
• Best results when matched to 20–100W, 3–8Ω passive speakers

Who is this for? The ARRAROWN ZK-1001B 2-pack is made for DIY audio enthusiasts, custom speaker builders and hobbyists who want a compact, high-power Bluetooth-enabled amplifier pair to convert passive drivers into a modern stereo system. It’s also a good fit for small home theater projects, music setups in bedrooms or offices, and anyone needing a protected, app-controllable amp that fits inside a speaker cabinet.