Etseinri HDMI 2.1 Certified 6m Cable (48Gbps, Ultra High Speed) for 4K 240Hz / 8K 60Hz, eARC & HDR
Product description
If you’re trying to get the most out of a modern gaming monitor or home cinema setup, cable quality can matter more than people think—especially when you’re chasing features like high refresh rates and eARC audio.
This Etseinri HDMI 2.1 lead positions itself as an “Ultra High Speed” option with HDMI 2.1 certification and up to 48Gbps bandwidth (on paper). That’s the kind of spec that tends to appeal if you’re running a PS5/Xbox Series console, a streaming box, or connecting a TV to a soundbar/AV receiver where you care about both video and audio features.
But it’s not a magic wand: a good HDMI cable still can’t compensate for a mismatched port setup or a device chain that simply doesn’t support the mode you’re aiming for. Worth checking before you buy.
Key takeaways
This 6m Etseinri HDMI 2.1 cable is designed for high-bandwidth HDMI use cases, including 4K at high refresh rates and 8K at up to 60Hz (as stated). It also targets audio connectivity via eARC, plus HDR formats such as Dynamic HDR10+ and Dolby Vision, and gaming features like VRR and ALLM.
In day-to-day terms, you’re buying it for fewer compromises: fewer “it works but not properly” moments when you set up a gaming monitor, switch between sources, or move from TV speakers to a soundbar.
That said, because your devices’ capabilities ultimately decide what you can run, it may feel overkill if your kit is still on older HDMI versions or you’re not using the relevant picture/audio modes.
The essentials
The headline is HDMI 2.1 certification with up to 48Gbps bandwidth. The listing also spells out a range of supported resolutions and refresh rates, including 8K at 60Hz, and 4K up to 240Hz (along with other 4K refresh options). There’s also support for 2K (1440p) at 144Hz and 1080p at 240Hz.
On the compatibility front, it’s described as backward compatible with earlier HDMI standards (from HDMI 2.0b/2.0a and older down to HDMI 1.1/1.2-era), so it’s intended to work in mixed setups without you needing to replace everything.
If you want a concrete example: say you’ve got a gaming monitor connected to a console. You set the console to output 4K with a high refresh rate, and then you add a soundbar/receiver on the TV side with eARC. This type of HDMI 2.1 lead is the “one cable to cover both sides” approach—video features plus the audio handshake—rather than treating them separately.
What to know about HDR, gaming features and audio
According to the product description, video support includes Dynamic HDR10+ and Dolby Vision, with mention of 12-bit colour accuracy. For gaming, it calls out VRR, QMS, QFT, and ALLM—features that aim to keep transitions smooth and reduce issues like tearing or flicker when modes change.
For audio, the cable is positioned as HDMI eARC capable, with support for formats listed as DTS:X, DTS Master, Dolby TrueHD, and Dolby Atmos. If you’ve ever switched inputs only to find the sound mode was limited to “basic” stereo, eARC support is exactly the sort of thing you’d expect to help with (assuming the TV and soundbar/AV receiver also support those modes).
Where it shines (and where it may not)
This cable is built around the idea of headroom: higher bandwidth plus shielding and reinforced construction. The listing mentions a braided nylon jacket for durability and corrosion-resistant 24K gold-plated connectors. It also states copper cores and a four-layer shielding approach to help minimise interference.
So, where it shines: - When you want a longer run (this one is 6m) without giving up on high-spec video and audio modes. - When your setup depends on eARC for lossless surround formats. - When you’re using a gaming monitor and want a cable that’s specced for high refresh modes.
Where it may not be the best fit: - If your devices can only output lower HDMI modes anyway, paying attention to HDMI 2.1-specific features may not change your results. - If the chain includes devices that don’t support the specific HDR/audio/gaming features you’re hoping for, the cable can only carry what the devices agree on.
Tech specs
- Type: HDMI lead (HDMI 2.1 certified)
- Bandwidth: up to 48Gbps
- Length: 6m
- Supported video modes (as stated):
- 8K at 60Hz
- 4K at 240Hz / 165Hz / 144Hz / 120Hz / 60Hz
- 2K (1440p) at 144Hz
- 1080P at 240Hz
- HDR support (as stated): Dynamic HDR10+ and Dolby Vision
- Gaming features (as stated): VRR, QMS, QFT, ALLM
- Audio support (as stated): eARC with DTS:X, DTS Master, Dolby TrueHD and Dolby Atmos
Should you buy it?
It makes sense if your goal is a single HDMI 2.1 cable that can handle high refresh 4K gaming and eARC audio in a setup with modern sources like gaming consoles, streaming devices, and soundbars/AV receivers.
It’s not the best choice if your TV and soundbar/AV receiver (or monitor) don’t support the specific HDMI 2.1 features you care about, because the cable can’t unlock capabilities that the rest of the chain doesn’t offer.
Worth considering if you’re buying for a living-room “all-in-one” layout and you prefer not to keep swapping cables when you change devices. You’ll also want to double-check what your devices support—particularly HDR format support and the eARC audio modes—before you expect everything to run at the top end.
FAQs
What does the HDMI 2.1 certification mean here?
The listing describes the cable as HDMI 2.1 certified (Ultra High Speed) with up to 48Gbps bandwidth, which is the basis for the high refresh and high resolution modes it claims.
Does it support eARC for soundbars?
Yes, the cable is described as supporting HDMI eARC and lists surround audio formats such as Dolby Atmos and DTS:X. You’ll still need eARC support on your TV and soundbar/AV receiver.
Will it work with older HDMI devices?
The product description says it’s backward compatible with earlier HDMI versions, so it should work across mixed setups in principle.
Is 6m a problem for high refresh gaming?
Longer runs can be more demanding, but this cable is explicitly marketed for high refresh rates and includes shielding and reinforcement in the build, so it’s aimed at exactly this kind of use. Still, mode availability depends on your devices.