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.
| 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, UL |
| 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 | |
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