An HD-compatible TV is a television that can display high-definition (HD) content, which offers better picture quality than standard definition. These TVs can support various HD resolutions, such as 720p, 1080p, or even 4K, allowing viewers to enjoy clearer and more detailed images. To fully experience HD content, users often need an HD source, such as a Blu-ray player, streaming device, or cable box. Additionally, an HDMI cable is typically used to connect these devices to the TV, ensuring optimal video and audio quality for an enhanced viewing experience.