FosPower 4x2 HDMI Matrix Switch
A cheap 4x2 matrix for 1080p setups, held back by 4K 30 Hz and uneven reliability.
The short version
- Bars, basements and dens that run two screens from a few cable boxes or consoles
- Setups with an older receiver that only takes optical or analog audio
- 1080p sources, or 4K content where 30 Hz is fine
- You want 4K at 60 Hz, HDR or modern consoles at full frame rate
- You need instant input changes
What owners like
- Does the core job of sending several sources to two TVs, handy for watching two games at once
- Audio extraction makes it easy to keep older audio gear in use
- Good value for what it does
Common complaints
- Screen flicker or lost signal with some sources and TVs
- Switching inputs is slow, with a short black screen each time
- Quality seems to vary between units, and pricier matrix switches are seen as more reliable
Based on Fosmon's product page, the Amazon product listing and eBay owner reviews on two regional catalog pages.
Research scores
Scored from the maker's specs and what owners report. Drew's own notes and photos will refine these.
Ownership
Drew's hands-on notes for this product are on the way. Long-term updates will be added to this timeline.
What it does
A box that routes any of four HDMI sources to either of two displays and pulls the audio out to optical or RCA stereo jacks.
- Any of four sources can go to either of two screens at the same time
- Audio extraction to optical and analog stereo for receivers or speakers without HDMI
- Audio return channel so TV sound can reach a soundbar
- IR remote plus automatic EDID handling to match sources to displays
- Fosmon, the brand behind FosPower, now sells a version with a 3.5 mm jack in place of the RCA outputs
A budget way to feed two TVs, or a TV and a projector, from four sources while sending sound to an older receiver or soundbar. The trade-offs are 4K at only 30 Hz, a slow pause when switching, and owner reports of flicker or dropouts with some devices, so it suits 1080p and casual 4K setups better than modern 4K60 gaming.
How it compares
Specs
- Inputs
- 4 x HDMI
- Outputs
- 2 x HDMI, optical (TOSLINK), L/R RCA stereo
- Video
- 4K x 2K at 30 Hz, 1080p up to 120 Hz, 3D (Fosmon spec for the current version)
- Bandwidth
- 10.2 Gbps (Fosmon spec)
- Audio formats
- DTS-HD, Dolby TrueHD, LPCM 7.1, DTS, Dolby Digital, DSD (Fosmon spec)
- ARC
- Yes, on HDMI output A only (Fosmon spec)
- In the box
- Switch, IR remote, power adapter
Questions
Does the FosPower 4x2 matrix support 4K 60Hz?
No. Fosmon lists 4K at 30 Hz, with 1080p up to 120 Hz.
Which output supports ARC?
Fosmon notes ARC works on HDMI output A only.
Can it show different sources on two TVs at once?
Yes. That is what a 4x2 matrix does: either output can show any of the four inputs.
Will it output 5.1 surround over optical?
Fosmon says 5.1 output needs a 5.1 signal coming in from the source.
Sources
- Amazon: FosPower 4 x 2 HDMI Matrix Switch with Optical and L/R Audio Output
- Fosmon: 4x2 HDMI Matrix Switch
- eBay: FosPower 4x2 4K UHD 3D ARC HDMI Matrix Selector Switch Splitter
- eBay UK: FosPower 4x2 4K UHD 3D ARC HDMI Matrix Selector Switch Splitter
- AV Access: 4KMX42-H2A 4x2 4K HDMI Matrix Switch
- BZBGEAR: BG-UHD-42M 4x2 4K UHD HDMI Matrix Switcher
Researched 2026-10-01. We bought this product; our page is built from the maker's details and what owners report across reviews and forums. We never copy Amazon customer reviews.
