Think about the types of cables you use to connect your electronic devices. How many of those cable formats were being used 20, 30 or 40 years ago?

If you come up empty here, let us jog your memory and call attention to the humble but still-relevant composite audio/video RCA cable. These cables with their familiar red, white and yellow connectors continue to provide dependable, cost-effective connections for audio and video devices.

RCA audio and video cables are not quite as popular as they used to be. In many cases they have been edged out by non-RCA formats, such as HDMI cables. However, RCA remains alive and well. This blog post examines six reasons why they still make sense for many consumers. But first, a little background …

Key Takeaways

  • RCA cables are widely used for compatible audio, video, and other electronic connections.
  • Red and white RCA connectors commonly carry the right and left channels of stereo audio.
  • A yellow RCA connector is commonly used for composite video.
  • Composite and component RCA cables are different and should not be treated as interchangeable.
  • RCA cables can connect televisions, home theatre equipment, amplifiers, speakers, CD players, turntables, gaming systems, and other compatible devices.
  • RCA cables are available in different connector configurations, including RCA-to-3.5 mm options.
  • Cable length, shielding, connector quality, and construction should be considered when selecting an RCA cable.
  • RCA connectors remain useful for legacy audio and video equipment.
  • For long or demanding installations, consider the signal type and cable construction rather than choosing based only on length.
  • Always verify the equipment's input and output requirements before selecting an RCA cable.

Composite RCA vs. Component RCA

The most common composite RCA cables contain either two or three lines. The red and white connectors of a two-line model carry the right and left audio channels of a stereo signal. The added yellow connector of three-line models transmits the video signal.

A second type of three-line RCA cable has red, green and blue (RGB) connectors on each end. This RGB component RCA cable carries a premium “component video” signal, which does not include audio. It divides the video into three parts: two for color information and one for luma (brightness).

Now for the six reasons why RCA is still popular.

  1. RCA Cables Are Versatile

RCA cables transmit audio and/or video signals for a wide variety of equipment.

  • They are used for video signage and video surveillance.
  • They connect laptop and desktop computers to home theater systems.
  • They link some televisions to DVD players, Blu-ray Disk players, gaming consoles, video cameras and digital still cameras.
  • RCA connects audio equipment such as power amplifiers, mixers, speakers, CD players and turntables.
  • To link devices to an automobile’s sound system, SMC offers a car audio installation cable.
  1. RCA Connectors Hold Tight but Attach Quickly

A big selling point for RCA cables has always been that they provide a connection that is solid enough to not easily jar loose, and yet easier to quickly attach and separate than threaded or even bayonet-style connectors.

  1. RCA Cables Are Cost-Effective

Partly because of their continued popularity, RCA cables continue to be relatively inexpensive. You can get a 6-foot standard dual RCA audio cable for several dollars. A few dollars more will get you the same length in a premium grade. Even SMC’s pro series three-connector RCA audio/video cable is very affordable.

  1. RCA Cables Have Improved

The quality of audio and video signals has increased considerably through the years, and so has the quality of RCA cables. You can now choose 24-karat gold-plated connectors with a beefed-up molding for strain relief. Some cables come with extra shielding for protection from unwanted noise and interference. Modern RCA cables have a higher bandwidth than older cables. This means they can transmit more data, allowing for higher quality signals.

  1. RCA Cables Have Adapted to the Times

Some RCA cables allow analog signals to be converted to digital signals for improved quality and compatibility with modern devices. One such example is SMC’s Sony/Philips digital interconnect format (S/PDIF) cable.

Another newer development is our ThinLine coaxial RCA cable. It uses a proprietary foamed dielectric to make the cable less than half the diameter of standard RG6 and RG59 for a lighter weight and more flexibility for tight spaces.

Not all “RCA” cables have RCA connectors on both ends. To meet a rising demand, several of SMC’s models mate RCA connectors on one end to a one-eighth inch (3.5 mm) male plug or female jack on the other.

  1. RCA Cables Connect to Legacy Equipment

While it is true that some cable formats have replaced RCA, most equipment setups include components that are at least several years old. Many of those with RCA jacks will be used for years to come. (As evidence of the lasting popularity of some legacy technologies, consider that in 2023, for the first time since 1987, vinyl records outsold compact disks!)

RCA AV cables are alive and well at ShowMeCables. Most of our wide selection is in-stock and available for same-day shipping if ordered before 5 p.m. ET.

If you have any questions or need guidance on what cable is best for you, our U.S.-based customer service would love to hear from you at 1-888-519-9505. Or you can contact us via email or chat.

 

Tips for Choosing RCA Cables

  1. Identify the Application: First, determine whether you need the RCA cable for audio, video, or both. RCA cables can be used with televisions, home theatre equipment, amplifiers, speakers, turntables, gaming systems, DVD players, and other devices.
  2. Determine the Number of Connectors: A two-connector RCA cable commonly carries stereo audio, with red and white connectors representing the right and left audio channels.
  3. Understand Composite vs. Component RCA: Do not confuse composite and component RCA cables. Composite RCA generally uses a yellow connector for video and red/white connectors for stereo audio.
  4. Check the Connector Configuration: Verify the connectors on both pieces of equipment before purchasing. RCA cables can also be available with different connector combinations, including RCA-to-3.5 mm configurations.
  5. Choose the Appropriate Cable Length: Select a cable long enough to comfortably connect the equipment without creating excessive slack. For home theatres or equipment racks, measure the actual routing path rather than selecting a cable based only on the straight-line distance between devices.
  6. Consider Shielding: For audio and video installations, especially near power cables or other sources of electrical interference, consider a cable with appropriate shielding.
  7. Consider Connector Quality: If the cable will be frequently connected and disconnected, consider connectors designed for durability and reliable contact.

 

FAQs – Frequently asked questions

 

What is an RCA cable?

An RCA cable is a cable that uses RCA connectors to transmit audio, video, or other compatible signals between electronic devices.

What do the red, white, and yellow RCA connectors mean?

In a common composite audio/video setup, red and white connectors carry the right and left audio channels, while the yellow connector carries composite video.

What is the difference between composite and component RCA cables?

Composite RCA typically uses one RCA connection for the video signal, while component video uses three RCA connections to carry separate video components. Component video requires separate audio connections.