The QU‑28S‑4K22 is an advanced HDMI distribution device designed to handle two selectable HDMI inputs and distribute the signal to up to eight simultaneous outputs. It supports 4K UHD video up to 4K @ 60Hz 4:4:4 (18 Gbps), 3D, and major 10-bit and 12-bit HDR formats, ensuring compatibility with the latest sources and displays. The unit supports LPCM 7.1, Bitstream, and Advanced HD Bitstream audio pass-through, ensuring the highest audio quality.
Each output features an independent HDCP management engine, ensuring stability even in heterogeneous display configurations. 4K to 1080p downscaling and color space conversion (4:4:4 to 4:2:0) are available for compatibility with multiple display generations. The unit also features advanced EDID management, with eight internal EDIDs, eight EDIDs copied from connected displays, and two user-customizable EDIDs.
A dedicated Group Mode feature allows the unit to be split into two independent 1 × 4 splitters, offering greater flexibility in multi-display installations. Active source CEC control support automatically resets displays to the correct input when the source changes. The unit is controlled via front-panel buttons with an integrated OSD and via the RS-232 port.
Main features
HDMI 4K HDR compliant, 18 Gbps, 3D, and 4K @ 60 Hz, DVI 1.0 compatible
HDCP 2.2 compliant and backward compatible with HDCP versions
Supports video signals up to 4K UHD (18 Gbps, 4K @ 50/60 Hz 4:4:4, 8-bit)
8-output HDMI splitter with 2 selectable inputs and support for automatic input switching
Special Group Mode allows the unit to function as two independent 1 x 4 splitters in a single chassis
Supports current 10-bit and 12-bit HDR (High Dynamic Range) formats
Supports LPCM 7.1, Bitstream, and Advanced HD Bitstream audio pass-through
Independent output selection, 4K to 1080p downscaling, and color space conversion (4:4:4 to 4:2:0)
Independent HDCP management engine for each output ensures stable performance
Supports eight internal EDIDs, eight external EDIDs copied from connected devices, and two user-supplied EDIDs
Support for CEC system reset
Front-panel control buttons with OSD and RS-232
User benefits
Reliable signal distribution even in installations with multiple displays
Greater flexibility thanks to the ability to split the unit into two independent splitters
Reduces display compatibility issues thanks to independent HDCP management
Simplified integration into control systems via OSD and RS-232
Instant and intuitive source switching via front-panel buttons
Stable operation even with sources and displays of different generations
Areas of use
Meeting rooms and corporate environments
Classrooms and educational spaces
Hotels, conference centers, and hospitality facilities
Shops, showrooms
Digital Signage
Video control rooms, broadcast studios, and production environments
Control rooms and monitoring rooms
Live events and installations rental
Technical characteristics
- Inputs:
- 2 × HDMI (uncompressed AV and data)
- 1 × USB 3 Type‑B (service/control port power & data)
- Outputs:
- 8 × HDMI (uncompressed AV and data)
- PSU: 5 VDC 3 A
- Dimensions (W × H × D): 24.0 × 2.4 × 10.3 cm
- Net weight: 680 g
