Marmoin

Marmoin HDMI Cable Splitter 1 in 2 Out HDMI Adapter Cable HDMI Male to Dual Female 1 to 2 Way, Support Two The Same Size TVs at The Same Time, Signal One in Two Out 1080P Mirror Only

Name: Marmoin HDMI Cable Splitter 1 in 2 Out HDMI Adapter Cable HDMI Male to Dual Female 1 to 2 Way, Support Two The Same Size TVs at The Same Time, Signal
Brand: Marmoin
SKU: B08RXK5K8R

Bottom line: The Marmoin HDMI Cable Splitter 1 in 2 Out HDMI Adapter Cable HDMI Male: Compact 11.8 inch (30 cm) cable, only 52 grams; main trade-off: no HDCP support, so Roku, Apple TV and cable boxes fail.

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By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-06

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ Compact 11.8 inch (30 cm) cable, only 52 grams
✓ Passes 720p, 1080i and 1080p without a power brick
✓ Works as a room-to-room signal router for two TVs

Cons

✗ No HDCP support, so Roku, Apple TV and cable boxes fail
✗ Mirror only, cannot extend to a second display
✗ Only one output active at a time on mismatched TV sizes
✗ Not compatible with MacBook HDMI output

Manufacturer description

The Marmoin HDMI Cable Splitter is an 11.8-inch (30 cm) passive adapter that breaks one HDMI male connection out to two HDMI female ports, letting you keep a console or disc player wired to two displays without swapping cables behind the entertainment center. It handles 720p, 1080i, and 1080p signal passthrough, which covers the resolutions most retro consoles, DVD and Blu-ray players, and older Xbox and PS3 hardware actually output. At 52 grams, the whole cable disappears behind a TV stand or inside a CRT-era AV rack. Understand what this Marmoin HDMI splitter cable is before you buy: it…

SpecPicks Verdict

SpecPicks scored Marmoin HDMI Cable Splitter 1 in 2 Out HDMI Adapter Cable HDMI Male… using a rating × review-volume × price-fit model applied to published specs and reviews across the retro graphics & video category. Marmoin's retro graphics & video lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for retro graphics & video of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Can I watch two different things on the two TVs?

No. This is a mirror-only splitter that duplicates one signal. It does not support extend mode, so both outputs show the same picture.

Will this work with my Roku or Apple TV?

No. The manufacturer states it does not support HDCP and will not work with TV or cable boxes such as Roku or Apple TV. It is intended for sources like Xbox, PS3, DVD and Blu-ray players.

Can both TVs be on at the same time?

Only if both TVs are the same size. Otherwise the manufacturer notes you must unplug one HDMI output to get a clear picture on the one you are using, since powering a TV off is not enough.

What resolutions does it support?

It supports 720p, 1080i and 1080p. There is no 4K support listed, so pair it with sources and displays in the 1080p range.

How long is the cable and what is in the box?

The cable is 11.8 inches (30 cm) long and weighs 52 grams. The package includes one HDMI male to dual HDMI female splitter cable and nothing else.

Key Features

Feature: It takes a signal from one device such as a Bluray player and will direct to one of two output devices that are plugged into it. This HDMI splitter cable is great for connecting one HDMI compatible device (Xbox,Blueray,DVD players,for PS3) to two visual output devises.Does not support hdcp and MacBook. Will not work on TV Box/Cable Box (e.g. Roku, Apple TV Box, etc.)
Function: This product can operate as a signal router,you may have a TV in two separate rooms,you can have a TV on in one room and when you want to switch room and keep watching the TV,you just need to switch one TV off and switch the other TV on,and then the signal is routed to the TV in the other room.
Suitable for:High Definition image resolutions such as 720p,1080i,and 1080p. Package Include: 1 x HDMI Cable. Length: 11.8 inch (30 cm).
Package Include: 1 x HDMI Male to 2 HDMI Female 1 in 2 out Splitter Cable ; Length: 11.8 inch (30 cm); Weight: 52.00g Note Only mirror/duplicate screen, NOT SUPPORT EXTEND!
Please Note - ONLY 1 output device can be active at any time. UNLESS both TVs are of the same size,then both TV will show the images when connected.you have to unplug one HDMI from this splitter to get a clear picture on the one you're using, not simply power off one of them

Full Specifications

Brand	Marmoin
Color	Black
Finish	Hdmi
Weight	52.00g
Unit Count	1.0 Count
Model Number	BL
Suitable for	High Definition image resolutions such as 720p,1080i,and 1080p. Package Include: 1 x HDMI Cable. Length: 11.8 inch (30 cm).
Compatibility	PS3, Xbox, Switch
Warranty Type	Limited
Built-In Media	hdmi
Connector Type	HDMI
Mfr Part Number	01
Number of Items	55
Number of Ports	2
Power Plug Type	No Plug
Compatible Devices	Television
Warranty Description	1 year
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	TV

Ready to buy?

Marmoin HDMI Cable Splitter 1 in 2 Out HDMI Adapter Cable HDMI Male to Dual Female 1 to 2 Way, Support Two The Same Size TVs at The Same Time, Signal One in Two Out 1080P Mirror Only is vintage hardware; the used and vintage market on eBay carries most of the live inventory. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. It also has an Amazon listing — check it for current price and availability. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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