Wuzhi Audio ZK-1001B Mono Bluetooth Amplifier Board 100W

The Wuzhi Audio ZK-1001B is a compact mono Bluetooth amplifier board that delivers up to 100W peak power, supports TWS pairing, and runs from DC7–24V for flexible speaker builds.

Designed for DIY speaker projects, compact soundbars, and small powered speaker assemblies, the ZK-1001B packs the TPA3116D2 chip, multiple input options, and built-in protections into a slim PCB. It accepts Bluetooth audio and wired sources, offers True Wireless Stereo (TWS) pairing to create left/right channels from two modules, and tolerates a wide voltage range for battery and mains-adapter setups. The board is intended for hobbyists and installers who want high-efficiency Class D amplification with modern connectivity in a small footprint.

How does the ZK-1001B connect to my devices?

The board supports Bluetooth wireless streaming plus several wired inputs so you can use it with phones, laptops, MP3 players, or a USB thumb drive. Inputs are selectable and the USB socket can accept a flash drive or act as a USB sound card depending on how you configure the source.

• Bluetooth wireless streaming for phones and tablets
• 3.5mm AUX line-in for older devices or mixers
• USB input supporting flash drives and USB audio modes
• Wiring terminals for speaker outputs and power (DC7–24V)

What audio performance and power can I expect?

Powered by the TPA3116D2 Class D amplifier chip, this board offers efficient amplification and clean output suited to bookshelf or compact PA speakers. The specification lists a 100W peak output — real continuous output depends on supply voltage, speaker impedance, and cooling — but the board is built to deliver strong, low-distortion sound for its size.

• TPA3116D2-based Class D amplification for efficiency
• Peak output rating of 100W (dependent on voltage and impedance)
• Works with typical 4Ω–8Ω speaker drivers
• Requires adequate cooling for sustained high-power use

How do I use the TWS feature and multi-board setups?

TWS mode pairs two identical ZK-1001B boards so one plays the left channel and the other plays the right, creating a stereo field from two mono amplifiers. Pairing is handled by the multifunction control — a short press initiates sync — making it simple to set up without extra wiring for stereo separation.

• Quick-press multifunction knob to initiate TWS sync
• Once paired, boards act as left and right channels wirelessly
• Use two identical units for best channel balance
• Maintain stable Bluetooth conditions during pairing

What protections and installation details should I know?

The ZK-1001B includes multiple protective circuits to help prevent damage during improper use, and it supports a broad input voltage to suit portable and fixed systems. Proper wiring, a correct voltage supply, and ventilation ensure reliable operation and avoid triggering protection modes.

• Over-voltage and under-voltage protection to guard supply faults
• Over-temperature and short-circuit protections for safety
• Wide DC7–24V input for battery packs or external adapters
• Follow polarity and grounding best practices when wiring

Who is this for: The Wuzhi Audio ZK-1001B is aimed at audio tinkerers, small-scale OEMs, and hobbyists building compact powered speakers, portable boomboxes, or desktop stereo pairs. Choose this board if you want efficient Class D power, Bluetooth with TWS stereo capability, multiple input methods, and built-in safety features — provided you can supply appropriate voltage, ensure cooling, and wire speakers correctly.