Etseinri HDMI 2.1 Certified 48Gbps Cable (1m) for 4K 240Hz, 8K 60Hz, eARC & Dolby Atmos

What this HDMI 2.1 cable is for

The Etseinri HDMI 2.1 Certified cable is aimed at people who want a single lead that can handle modern video modes (including high refresh gaming) and also keep audio features in the mix when you’re using a TV + soundbar/AV receiver setup. On paper, it’s built for current HDMI 2.1 use cases like eARC audio, while still being backward compatible with older HDMI standards.

Where it tends to fit in real life is straightforward: connecting a gaming console to a gaming monitor, or linking a TV to a soundbar so you don’t have to worry as much about whether your setup is “too new” for the cable.

The essentials: speed, refresh rates and formats

The headline claim is an Ultra High Speed HDMI 2.1 Certified cable delivering up to 48Gbps bandwidth. The description also lists a range of supported display combinations, including: - 8K at 60Hz - 4K at up to 240Hz (with other listed refresh rates such as 165Hz/120Hz) - 2K (1440p) at up to 144Hz - 1080p at up to 240Hz

It’s also described as supporting Dynamic HDR10+ and Dolby Vision, with “12-bit color accuracy” mentioned. For HDR and high-frame-rate gaming, that matters because you’re usually trying to keep image and audio features aligned rather than just pushing a basic signal.

Worth noting: cables only help if the rest of your devices actually support the modes you care about. If your TV, monitor, console or receiver doesn’t support a listed spec, you won’t magically unlock it just by swapping the lead.

Gaming features you’re likely to care about

For gaming monitoring and console play, the cable is described as supporting VRR, QMS, QFT and ALLM. In plain terms, these are the sort of HDMI features that aim to reduce screen tearing, improve handshakes and keep the experience smooth when game settings change.

A quick example of a typical setup: you plug a PlayStation or Xbox into a gaming monitor that supports high refresh rates, then use the correct HDMI port for VRR. With a cable like this on paper, you’re covering the “signal capability” side so the display can receive up to the performance tier it’s designed for.

eARC audio for TV to soundbar/AV receiver

If your priority is audio as much as video, this is where the cable wants to stand out. It’s described as having eARC support (HDMI version 2.1, Version 2.1 noted in the description). The lead is pitched for uncompressed, lossless surround sound, with support listed for DTS:X, DTS Master, Dolby TrueHD and Dolby Atmos.

That’s particularly relevant if you’re currently using a TV that routes audio to a soundbar or receiver and you want fewer compromises. Still, it’s a “chain” situation: your TV and soundbar/AV receiver must both support the formats you’re expecting.

Build and durability: braided cord, shielding, and connectors

This cable is positioned as more durable than the very cheapest HDMI leads. The description mentions: - a reinforced braided nylon jacket - 24K gold-plated connectors - copper cores - 4-layer shielding

If you move your setup often, use a cable in a tight run behind a desk, or simply prefer something that feels tougher than standard budget HDMI cords, these details are the kind you’d normally look for. It’s not perfect—anything can be damaged if it’s bent sharply or pulled hard—but this design sounds aimed at day-to-day reliability rather than “throw it in once and forget”.

Compatibility and what to check before you buy

The Etseinri cable is described as backward compatible with HDMI 2.0b/2.0a/1.4/1.3/1.2/1.1, and compatible with a wide set of devices listed in the description (consoles, PCs/laptops, streaming devices, Blu-ray/DVD players, AV receivers, soundbars, gaming monitors, HDTVs and projectors).

Before buying, it’s worth checking two things so you don’t end up expecting the wrong outcome: 1) Does your device support HDMI 2.1 features (like VRR and eARC) on the specific ports you’re using? 2) Is your target display mode realistic for your TV/monitor? High refresh and high resolution often depend on the device capabilities and HDMI port routing.

Is it worth it?

A solid pick if you’re building a modern gaming and entertainment setup and you want one HDMI cable that’s specified for up to 48Gbps, with support called out for high refresh gaming modes and eARC audio formats. It makes sense if you care about keeping HDR and lossless-style surround audio options available between a TV and a soundbar/receiver.

You may want to skip it if your goal is just basic TV viewing or older equipment where you won’t use HDMI 2.1 features anyway—spending more on a “fully loaded” cable doesn’t add much if your devices are the limiting factor.

It’s not the best choice if you know you’ll be using a lot of long-distance runs and you’ve not checked your setup requirements, the description doesn’t cover long-run performance, so it’s better treated as a short-cable use case.

Mini FAQ

Does this HDMI cable support Dolby Atmos and eARC?

The description says it supports eARC and lists Dolby Atmos (along with Dolby TrueHD) as supported audio formats.

Will it work with older HDMI ports?

It’s described as backward compatible with earlier HDMI versions including HDMI 2.0b/2.0a and down through older standards.

Can it do 4K at 240Hz for gaming?

The description lists support for 4K at up to 240Hz, but you should still confirm your monitor/TV and the relevant HDMI port on the device support that refresh mode.

Will HDR10+ and Dolby Vision work?

Dynamic HDR10+ and Dolby Vision support are mentioned, but again, your display device must support them.

What’s the cable length?

The product name indicates a 1m HDMI lead.