Updated November 2026: The Monoprice 8K Certified Ultra High Speed HDMI Cable is the 48Gbps cable we point most people to when they need 4K@120 or 8K@60. It’s certified, lists a CL2 in-wall rating, and comes with a lifetime warranty on the Amazon listing. The main caution is length: some owners report flicker, so buy the shortest cable that reaches.
How we reviewed it: this review is based on Monoprice’s published specifications, its Amazon listing, the HDMI cable categories from HDMI Licensing, and owner feedback on Amazon as of November 2026.
Verdict: Our pick for 4K@120 and 8K@60. Buy the shortest length that reaches.
Check price on AmazonBuy it if
- You're connecting a PS5, Xbox Series X or PC to a 120Hz TV
- You have an 8K display
- You need a CL2 rating for an in-wall run
Skip it if
- Your gear stops at 4K@60
- You need a very long run at full bandwidth, where some owners report flicker
- Bandwidth
- 48Gbps, certified
- Max video
- 8K@60, 4K@120
- Audio return
- eARC
- In-wall
- CL2
Who needs a 48Gbps cable?
You need one if a current console or PC is connected to a TV or monitor that runs 4K@120, or if you have an 8K setup. A PS5 or Xbox Series X set to 120Hz is the common case, and Monoprice names both on the listing.
If your setup tops out at 4K@60, the extra bandwidth does nothing for you. HDMI is digital, so an 18Gbps cable like the PowerBear 4K delivers the same picture at that rate, for less money.
Specifications
| Certification | Certified Ultra High Speed, by an HDMI authorized testing center per Monoprice |
| Bandwidth | Up to 48Gbps |
| Uncompressed video | Up to 8K@60, including 4K@120 |
| With DSC 1.2a | Up to 10K@120 |
| HDR | Dynamic HDR and Dolby Vision |
| Audio | eARC, Dolby Atmos and DTS:X |
| Gaming features | VRR and ALLM |
| Conductors | 30AWG |
| Jacket | Braided, CL2 in-wall rated |
| Lengths | 3 ft to 25 ft, depending on the version |
| Warranty on this listing | Lifetime |
| Model number | 142684 (15 ft) |
What certification gets you
Certification is the strongest reason to pick this cable over an unlabeled budget 48Gbps option. Monoprice says the design was certified by an HDMI authorized testing center, which means it was checked against the Ultra High Speed requirement rather than just described that way on a product page. Certified cables are supposed to carry a label with a QR code you can scan in the HDMI Cable Certification app, so scan it when the cable arrives.
Certification doesn’t promise that every setup will be trouble free. Your source, display and the length of the run all still count.
Length and flicker
The listing we checked is the 15 ft cable, and that’s a long run for a passive copper cable at 48Gbps with 30AWG conductors. Owners are split on picture quality: 11 positive and 12 negative among the 23 who mention it, with Amazon’s summary noting flickering. We can’t tell from reviews which setups caused it, but long passive runs at full bandwidth have the least margin.
The practical answer is to buy the shortest length that reaches. Monoprice also sells 3 ft, 6 ft and 10 ft versions. For a run past about 15 ft at 4K@120, look at an active optical cable instead.
Gaming and audio features
Monoprice lists VRR and ALLM, the two HDMI 2.1 gaming features most people care about. VRR matches the display’s refresh to the frame rate, and ALLM switches the TV to its low-latency mode. Your console and TV have to support them, and the cable just needs enough bandwidth to carry the signal.
eARC is listed too, so a compatible TV can send lossless Dolby Atmos and DTS:X to a compatible soundbar or receiver.
What owners say
Amazon’s customer review summary for this listing (November 2026), pooled across its versions, sorts owner comments by topic:
- Mostly praised: reliability and cable quality.
- More mixed: picture quality, value for money, durability and data rate.
Most owners find that it works and like the cable itself. The mixed results are picture quality, as covered above, plus durability, where Amazon’s summary notes some cables failing after a few months. The lifetime warranty helps there, so keep your proof of purchase.
How it compares
The Monster M3000 is rated for the same 48Gbps, but it cost more for a much shorter cable when we checked, and its Amazon listing doesn’t state an in-wall rating or use the word certified. Unless you prefer Monster’s jacket or find a better price, the Monoprice is the stronger value.
Pros and cons
Pros
- Certified Ultra High Speed at 48Gbps
- Covers 4K@120, 8K@60, VRR, ALLM and eARC
- CL2 in-wall rating on the listing
- Lifetime warranty on the listing
- Sold in lengths from 3 ft to 25 ft
Cons
- Mixed picture-quality reports, including flicker
- Some owners report early failures
- Unnecessary for 4K@60 setups
Who should buy it
Buy it for a PS5, Xbox Series X or PC connected to a 120Hz TV, for an 8K display, or for an in-wall run that needs a stated CL2 rating.
Skip it if your gear stops at 4K@60, where an 18Gbps cable like the PowerBear 4K is enough. Also think twice about the longest lengths at full bandwidth.
Frequently asked questions
Does the Monoprice 8K cable support 4K at 120Hz?
Yes. Monoprice lists uncompressed video up to 8K@60, including 4K@120.
Is it HDMI certified?
Monoprice says it is certified by an HDMI authorized testing center. Certified cables carry a label with a QR code that scans in the HDMI Cable Certification app.
Does it work with a PS5 and Xbox Series X?
Yes. Monoprice names both on the listing. To use 120Hz, your TV also needs to support 4K@120.
Can it be installed in a wall?
The listing states CL2 in-wall rating. Check that your local code accepts CL2 for your run before installing it.
What lengths does it come in?
Monoprice lists versions from 3 ft to 25 ft. Buy the shortest one that reaches, since long passive runs at 48Gbps have the least signal margin.
Is it overkill for a 4K@60 TV?
Yes. An 18Gbps cable carries 4K@60 and costs less. A 48Gbps cable only helps when your devices use the extra bandwidth.
Final verdict
If you need 4K@120 or 8K@60, the Monoprice 8K Certified cable gives you certification, a stated in-wall rating and a lifetime warranty on the listing. Buy the shortest length that reaches and test it right away, since some owners report flicker. If you’re at 4K@60, keep your money and buy an 18Gbps cable.
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