48Gbps 4×4 HDMI 2.1 Matrix Switcher with Per-Output Downscaling & Audio Breakout
Full Gaming Feature Set - VRR, ALLM, QMS, QFT & SBTM to Every Output at 4K120 4:4:4
Routes 8K and 4K/120 gaming sources to a mix of new and legacy displays, downscaling and HDR-converting each output independently so one matrix drives every screen in the room. The MMX-4X4-48G is a 1U, all-metal 4×4 HDMI 2.1 matrix that carries the full 48Gbps FRL bandwidth to all four outputs, powered by a locking 24V/2.7A supply and rated up to 8K60 4:2:0, 8K30 4:4:4 and 4K120 4:4:4. It is the right choice for gaming theaters, esports rooms and mixed-resolution commercial installs where high-refresh signal integrity and per-output scaling matter more than raw port count.
Each of the four outputs carries the complete HDMI 2.1 gaming feature set — VRR, ALLM, QMS, QFT and SBTM — with HDR10, HDR10+, Dolby Vision and HLG pass-through, plus independent optical S/PDIF and balanced analog breakout for de-embedding audio to a processor or zone amp. Advanced EDID management with 36 defined, 3 user and 4 copy modes keeps mixed-source, mixed-display systems stable, and the matrix drops into any control system over front-panel buttons, IR, RS-232 or a TCP/IP Web GUI. Its single strongest advantage is doing all of this at a true 48Gbps — not the 40Gbps of many 8K units — while downscaling per output so legacy 4K and 1080p displays share the same routing fabric as the 8K reference screen, without a separate scaler in the rack.
- HDCP 2.3 compliant.
- 4 × HDMI inputs can be independently routed to 4 × HDMI outputs.
- Video resolution up to 8K60Hz 4:2:0, 8K30Hz 4:4:4 and 4K120Hz 4:4:4, as specified in HDMI 2.1.
- Supports 48Gbps video bandwidth.
- HDR, HDR10, HDR10+ and Dolby Vision pass-through.
- Resolution downscaling and HDR conversion on each output port.
- Supports VRR, ALLM, QMS, QFT and SBTM.
- Optical audio and balanced analog audio output.
- Advanced EDID management.
- Control via front-panel buttons, IR remote, RS-232 and Web GUI.
Transcript
Hi, I'm Eric from KanexPro. This is our 48 gigabit four by four HDMI 2.1 matrix: any of four sources to any of four displays. It carries 4K120 4:4:4 and 8K60, with VRR and ALLM for gaming on every output. And each output scales and converts HDR on its own, so new and older screens share one matrix. Here's how it connects. Sources plug into the HDMI inputs: a gaming PC, two consoles and an 8K media player. The outputs feed four displays: an 8K TV, a 4K TV, and a gaming monitor at 120 hertz. A 1080p TV on the last output still gets a clean picture, scaled and converted from HDR. The supplied 24 volt adapter powers it. Next, audio and control. Each output's audio comes out on optical, here to a soundbar, and on a balanced block, here to an amplifier or DSP. A PC opens the web page, and a control system connects on RS-232. And IR EXT takes a receiver cable when the matrix sits in a closed rack. Built for fast sources and mixed screens. Gaming lounges: every station on any console, at 4K120. Homes: every room's TV picks its own source. Sports bars: a different game on every TV. Training rooms: 8K to new screens, 1080p to older ones. Now, the key features. Four by four: any source to any display. 48 gigabits: 4K120 4:4:4, 8K60 4:2:0, and 8K30 4:4:4. Gaming on every output: VRR, ALLM, QMS, QFT and SBTM. Scaling and HDR conversion on every output, so older screens still look right. Audio out on every output: optical, and a balanced block. For integrators: a web page, RS-232, IR, and EDID management. Spec it wherever fast sources meet mixed screens. Thanks for watching. I'm Eric from KanexPro. See you next time.
| Technical | |
| HDMI Compliance | HDMI 2.1 |
| HDCP Compliance | HDCP 2.3 |
| Video Bandwidth | 48Gbps |
| Video Resolution | Up to 8K60Hz 4:2:0, 8K30Hz 4:4:4 and 4K120Hz 4:4:4 |
| Color Space | RGB 4:4:4, YCbCr 4:4:4, YCbCr 4:2:2, YCbCr 4:2:0 |
| Color Depth | 8/10/12-bit |
| HDR Formats | HDR, HDR10, HDR10+, Dolby Vision, HLG |
| Audio Latency | No latency |
| Video Latency | No latency |
| Audio Formats — HDMI In/Out | LPCM, Dolby Digital/Plus/EX, Dolby TrueHD, Dolby Atmos, DTS, DTS-EX, DTS-96/24, DTS High Res, DTS-HD Master Audio, DSD |
| Audio Formats — Optical Breakout | LPCM 2.0CH / Dolby / DTS 5.1CH |
| Audio Formats — Balanced Analog Breakout | LPCM 2CH |
| ESD Protection | IEC 61000-4-2: ±8kV air-gap discharge, ±4kV contact discharge |
| HDMI Cable Length (In / Out) | |
| 8K | 3m / 9.8ft (Ultra High Speed HDMI 2.1) |
| 4K60 | 5m / 16ft |
| 4K30 | 10m / 33ft |
| 1080P | 15m / 49ft |
| Connection | |
| Input Ports | 4 × HDMI Input [Type A, 19-pin female] |
| Output Ports | 4 × HDMI Output [Type A, 19-pin female]; 4 × Optical Audio [S/PDIF]; 4 × L/R Audio [5-pin 3.81mm phoenix connector] |
| Control Ports | 1 × TCP/IP [RJ45]; 1 × RS-232 [D-Sub 9]; 1 × IR EXT [3.5mm stereo mini-jack] |
| Physical | |
| Housing | Metal enclosure |
| Color | Black |
| Dimensions (W × D × H) | 17.32" × 7.99" × 1.75" (440 × 203 × 44.5mm) |
| Weight (net) | 5.84 lbs (2.65kg) |
| Power | |
| Power Supply | Input AC 100–240V 50/60Hz; Output DC 24V/2.7A (locking power adapter) |
| Power Consumption | 35W (max) |
| Environmental | |
| Operating Temperature | 32–104°F / 0–40°C |
| Storage Temperature | -4–140°F / -20–60°C |
| Operating Humidity | 20%–80% RH, non-condensing |
| Storage Humidity | 10%–90% RH, non-condensing |
| Certifications | |
| Certifications | CE, FCC, RoHS |
| Package Contents | |
| 1 × 48Gbps 4×4 HDMI Matrix | |
| 1 × 24V/2.7A locking power adapter | |
| 1 × IR remote | |
| 1 × IR wideband receiver cable (12V, 1.5m) | |
| 1 × AC power cord (1.5m) | |
| 1 × RS-232 serial cable (1.5m, male-to-female) | |
| 4 × 5-pin 3.81mm phoenix connector | |
| 8 × machine screw (KM3*6) | |
| 2 × mounting ear | |
What is the maximum video resolution the MMX-4X4-48G can pass?
Which HDCP version does the MMX-4X4-48G comply with?
What control protocols does the MMX-4X4-48G accept?
How does a control system route sources on the MMX-4X4-48G?
How does the MMX-4X4-48G get power, and how is the adapter connected?
How do I connect the MMX-4X4-48G to my network for Web GUI control?
The MMX-4X4-48G shows no picture on a connected display. What should I check?
I cannot reach the MMX-4X4-48G Web GUI in a browser. What should I try?
Is this a true 48Gbps HDMI 2.1 matrix, or a 40Gbps unit?
Will it preserve VRR and ALLM for game consoles?
Ask Claude, ChatGPT or Copilot about the MMX-4X4-48G: its specifications, your price, stock, and a draft order for you to place. Or wire the REST API into your quoting tool or ERP.