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Two small black boxes with RCA ports and SC fiber connectors, US power plugs attached

YINGHUA

YINGHUA 20Km RCA Fiber Optical Extender Kit US Plug

SKU CH-DDMR-4KSQ9

Extends two-way RCA audio up to 20 km over single SC fibre with 24-bit/96 kHz sampling and no electromagnetic interference

  • Product typeHDMI
  • Transmit two-way RCA audio up to 20 km over a single SC fiber
  • 24-bit/96 kHz digital sampling preserves full 20 Hz–20 kHz frequency response
  • All-optical path eliminates electromagnetic, RF and ground-loop interference
  • Automatic optical dynamic technology requires no manual adjustment
  • Suitable for game consoles, home theater, conference, education and broadcast systems

YINGHUA 20Km RCA Fiber Extender Kit

This YINGHUA kit extends two-way unbalanced RCA audio over a single SC fiber cable up to 20 kilometres. It uses 24-bit 96 kHz digital sampling to maintain high-fidelity transmission without electromagnetic or radio-frequency interference. The transceiver pair is suited for broadcast, home-theatre, conferencing and education installations where long cable runs are required. Power is supplied via the included US plug adapters.

Replaces analogue RCA runs over copper

Copper RCA cables pick up hum and degrade over distance, while this fiber link delivers a clean 20 Hz to 20 kHz response at 10 kΩ input and 600 Ω output impedance. The jump is worth it when the source and destination are separated by more than a few metres or sit in electrically noisy environments. No manual optical alignment is needed because dynamic optical technology handles signal optimisation automatically.

Check your gear before ordering

Verify that both source and sink devices provide unbalanced RCA audio connectors and that you have a single-mode SC fiber patch cable for the desired length. The kit requires mains outlets for the two transceiver units, so confirm AC access at each end. This product carries only audio; it does not pass video, HDMI, Ethernet or control signals.

How it compares

Measured against everything we stock in KVM Switches & Rack Consoles, at today’s prices. Recalculated every night.

Price $133.99
Pricier than about 63% of the 4,010 comparable items (median $105.49).

Specifications

Product
Product typeHDMI

Questions about this item

Does the kit include the SC fiber cable for the 20 km link?

The listing specifies the extender works over a single SC fiber cable up to 20 km; the cable itself is not included.

How do I connect the RCA audio cables and power the units?

Plug the RCA cables into the unbalanced 10 K input and 600 output jacks, then connect each unit to mains power using the supplied US plug adapters.

Will the optical modules need cleaning or replacement over time?

The digital optical link is maintenance-free; only clean the SC connectors with a lint-free wipe if signal loss appears.

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