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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-VA2WM. 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. Plus, it installs neatly in your wall for a décor-friendly look.

The 'VA2WM is 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 matching baluns to set up a fully functioning system. You can use two C5-VA2WMs, or pair one with a small component-style model. Installation is straightforward — just connect them both to in-wall CAT-5 cable, then mount them into your wall. Place one in your main room, and connect a cable box, DVD player or other audio/video source. Install the other in your remote room. Then hook it up to a TV or A/V receiver via its composite video and stereo audio jacks. Now you can send audio and video from your main room to your secondary room.

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-VA2WM balun converts composite video and stereo audio signals between balanced CAT-5 connections and unbalanced RCA connections.

Product Highlights:

  • two Niles stereo audio and composite video 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
  • fits standard single-gang junction box
  • composite video and stereo audio cables required for installation (sold separately)
  • 1-13/16"W x 2-15/16"H x 2-9/16"D
  • warranty: 10 years
  • Our 60-day money-back guarantee

Niles C5-VA2WM Reviews

Hands-on research

What's in the box?

Download owner's manual

  • White single-gang Decora style CAT-5/Composite video and analog stereo audio transformer
  • White Decora wall plate
  • 2 Insert screws
  • 2 Wall plate screws
  • Installation guide

Product Research



Product Overview: The C5-VA2WM is a transformer (Balun) to convert a CAT-5 signal to composite video and analog stereo audio, and vice versa. Typically two are used at opposite ends of the signal path; one unit converts the audio/video source to CAT-5 for transmission over a long distance, a second unit converts the CAT-5 signal back to composite video and analog stereo audio to feed the A/V system.

Mounting: The Balun is designed to fit into a single gang J-box using the included wall plate. Multiple insert plates can be mounted in larger J-boxes using Decora-style wall plates designed to cover multiple gang J-boxes.


Audio/Video: The three female RCA jacks on the front of the C5-VA2WM can be used as composite video and analog stereo audio inputs and converted to CAT-5, or as an output to feed A/V composites.

CAT-5: The RJ-45 jack on the back of the unit can be used as an input and converted to composite video and analog stereo audio, or as an output to feed the network.



Video: DC to 10 MHz

Audio: 20 Hz-20 kHz

Transmission Distance:


1500' (CAT-3 UTP)

2200' (CAT-5 UTP)

Black & White:

2000' (CAT-3 UTP)

2500' (CAT-5 UTP)

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