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Back to HomeFrequently Asked Questions
Quick answers to the most common questions about our products, setup, and support.
TWS (True Wireless Stereo) lets you pair two ZK-1001U boards for true left/right stereo sound. Power on both boards, then triple-press the volume knob on one board — the blue TWS indicator will flash. The second board automatically connects. Once paired, one board becomes the left channel and the other the right. They auto-reconnect every time you power them on together.
The ZK-1001U supports 9–24V DC input (minimum 4A). The ZK-1002T supports 12–24V DC via a standard 5.5×2.1mm jack. For best performance and maximum output power, we recommend using 19V or 24V. The ZK-1001U has a built-in boost circuit that automatically steps up lower input voltages for consistent output.
Yes — always. All Wuzhi Audio boards use genuine Texas Instruments TPA3116D2 amplifier chips, not clone or counterfeit versions. We guarantee authenticity with every order, and all boards are tested before shipping to verify full-spec performance.
All Wuzhi Audio products come with a 2-year warranty against manufacturing defects. If you experience any issue, contact us at [email protected] with your order details and a description of the problem. We'll resolve it quickly.
Absolutely. The ZK-1001U is specifically designed for vehicle use with its wide 9–24V input range — matching standard 12V car batteries. The built-in boost circuit ensures consistent output even with voltage fluctuations common in vehicle electrical systems. The reverse polarity protection is also an important safety feature for automotive installations.
The ZK-1001U is compatible with speakers rated 20–100W at 3–8Ω impedance. The ZK-1002T supports 4–8Ω speakers per channel. Always ensure your speaker's power rating matches or exceeds the amplifier's output. Using underpowered speakers at high volume can damage them.
Standard shipping to US addresses typically takes 5–10 business days. Expedited options are available at checkout. All orders are carefully packaged in anti-static, cushioned packaging to ensure safe delivery. You'll receive a tracking number by email once your order ships.