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If you're putting together a multi-room audio/video system that involves longer cable runs between rooms, check out the Niles C5-VA2. This clever device uses durable, inexpensive CAT-5 cable to send standard-definition composite video and stereo audio signals to another room in your house. It's a great option for homes with an existing CAT-5 network, since you won't have to install any new in-wall wire. And it delivers full, clear sound and crisp video, even over cable runs of up to 2,200 feet.

How it works
You'll need to purchase two baluns to set up a fully functioning system. You can use two C5-VA2s, or pair one with an in-wall model. Connect the first one to a cable box, DVD player or other A/V source in your main room, and plug it into a nearby CAT-5 outlet. Next, connect your second C5-VA2 to a CAT-5 outlet in your remote room. Then hook it up to a TV and A/V setup via its composite video and stereo audio jacks. The compact C5-VA2 doesn't require AC power, and it's wall-mountable for flexible placement.

What is a balun?
A balun gets its name by converting signals between balanced and unbalanced lines. Balanced cables can carry signals over much larger distances than unbalanced lines, because of their superior noise rejection. The C5-VA2 balun converts composite video and stereo audio signals between balanced CAT-5 connections and unbalanced RCA connections.

Product Highlights:

  • two Niles composite video and stereo audio baluns required for a fully functioning setup
  • gold-plated composite video and stereo audio inputs/outputs
  • shielded Ethernet jack
  • maximum range: 2,200 feet
  • video bandwidth: 10 MHz
  • audio bandwidth: 20-20,000 Hz
  • not compatible with Wi-Fi® adapters
  • cannot share CAT-5 cable with other signals
  • universal mounting holes
  • composite video and stereo audio cables required for installation (sold separately)
  • 4-3/4"W x 1"H x 2-5/16"D
  • warranty: 10 years
  • Our 60-day money-back guarantee

Niles C5-VA2 Reviews

Hands-on research

What's in the box?

Download owner's manual

  • CAT-5/Audio-Video Transformer
  • Installation guide

Product Research



Product Overview: The C5-VA2 is a transformer to convert a CAT-5 signal to composite video and stereo audio, and vice versa. Typically two are used at opposite ends of the signal path; one unit converts an A/V source to CAT-5 for transmission over a long distance, a second unit converts the CAT-5 signal back to A/V to feed a remote audio video system.


A/V: Female RCA composite video and RCA stereo audio, can be used as an input and converted to CAT-5 or as an output to feed a TV or other A/V system

CAT-5: RJ-45 jack, can be used as an input and converted to A/V or as an output to feed a network



  • Video: DC to 10 MHz
  • Audio: 20 Hz-20 kHz

Transmission Distance:

  • Color:
    • 1500' (CAT-3 UTP)
    • 2200' (CAT-5 UTP)
  • Black & White:
    • 2000' (CAT-3 UTP)
    • 2500' (CAT-5 UTP)

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