4K TV Cables: What You Need to Know Before You Buy

Did you know a low‑quality HDMI cable can turn a crisp 4K image into a blurry mess? The right cable makes sure every colour and every sound hits your TV just as the maker intended.

Choose the Right HDMI Version

Most new 4K TVs need an HDMI 2.0 or higher connection. HDMI 2.0 supports 4K at 60 Hz, which is fine for movies and gaming. If you want 4K at 120 Hz, HDR, or want to future‑proof for 8K, look for HDMI 2.1. The label on the cable usually reads “High Speed HDMI” (good for 2.0) or “Ultra High Speed HDMI” (required for 2.1).

Length, Build, and Price

Short cables (under 3 m) are cheap and work well. When you go longer, signal loss can appear as flickering or loss of HDR. For runs over 3 m, pick a cable with good shielding and a higher data‑rate rating. Gold‑plated connectors help reduce corrosion, but they don’t magically improve picture quality. Expect to pay about £5‑£10 for a solid 2 m high‑speed cable, and around £15‑£25 for a 5 m Ultra High‑Speed version.

Installation is simple: connect one end to the TV’s HDMI‑ARC or HDMI‑INPUT, the other to the source (receiver, console, or PC). Make sure the TV’s input source matches the cable’s specification in the settings menu. If you get a black screen, double‑check you’re using the correct HDMI port and that the cable is fully seated.

Some common issues you might see:

• No signal: Try a different HDMI port or a shorter cable.
• HDR not showing: Verify the source device is set to output HDR and the TV’s HDR mode is enabled.
• Audio dropouts: Make sure the cable isn’t pinched behind furniture and that both ends are tight.

When shopping, ignore hype about “premium” or “luxury” cables. The HDMI standards are strict – any cable that meets the label’s spec will pass the same test. Look for certified cables from reputable brands and read a few user reviews for any reliability complaints.

Finally, keep your cables tidy. Use Velcro straps or cable clips to avoid sharp bends that can damage the internal wiring. A neat setup not only looks better but also reduces strain on the connectors.

With the right HDMI cable, your 4K TV will deliver the picture and sound you paid for. Choose the correct version, match the length to your room, and you’ll be set for years of binge‑watching, gaming, and streaming without a hiccup.