Everything You Need to Know About
Legacy TV Input Connections: Video and Audio

In a world constantly driven by technological innovation, the allure of upgrading to the latest TV model is undeniable. Sleek designs, energy efficiency, and compact builds make them an attractive choice. However, what if your trusty old TV is snugly nestled in a custom-designed alcove or a meticulously crafted cabinet or bookshelf? Is it worth the hassle and energy expenditure to replace it? In an era marked by sustainability and the pursuit of net-zero goals, keeping your old TV might just prove to be a prudent choice. But even if you decide to embrace the latest technology, legacy TV input connections hold their own unique charm and functionality.

Depending on when your TV was installed, it may offer a range of different input options:

Radio Frequency (RF) or Coaxial (VHF/UHF):

These inputs are often used for cable or antenna connections, carrying both video and audio signals.

Composite Audio/Video (A/V):

Commonly referred to as an RCA connection, this input merges monochrome and color visuals into a single video signal while segregating audio into distinct left and right channels. It provides better transmission quality compared to RF, delivering both audio and video data.

Composite Conversion A/V Input (Sony TVs):

This input, found on Sony Android TV™/Google TV devices, transfers both audio and video data. To connect, you’ll need a conversion cable with a 3.5mm jack on one end and RCA composite inputs on the other. Sony often refers to this cable as an RCA conversion cable.


Offering superior quality to composite video, S-Video uses separate conductors for black-and-white and color signals. However, it only transfers video data, making it a common choice for older legacy devices.

Component Video:

Component video connections elevate the quality further by splitting the video signal into three components: luminance (Y), blue color difference (PB), and red color difference (PR). This configuration ensures vibrant and precise colors. Please note that RGB terminals, found on certain computers and monitors, are distinct from component video and are not interchangeable.

Digital Video Interface (DVI):

DVI facilitates the digital transmission of video signals and is secured by HDCP technology to protect against signal piracy. It primarily transfers video, so it’s essential to verify if your cable and device support video-only or both video and audio transmissions.

High-Definition Multimedia Interface (HDMI):

HDMI stands at the forefront, delivering uncompressed HD digital video and audio. Enhanced with HDCP technology, it offers top-tier sound and visual quality, making it the preferred choice for superior audio and video transmission.

Elevate Your Network with TV Input Connections

While modern TVs beckon with their advanced features, legacy TV input connections still play a valuable role in our connected world. Whether you choose to embrace the nostalgia or explore the latest technology, understanding these input options empowers you to make informed decisions about your viewing experience. So, whether you’re cherishing the past or embracing the future, legacy TV input connections offer a bridge between the two, ensuring you enjoy your favorite content with exceptional clarity and convenience.