What is the Kramer DA3-28-H switcher and distribution amplifier?
The Kramer DA3-28-H is a premium 2x1:8 4K HDR switcher and HDMI distribution amplifier. It selects one of two inputs, HDMI or USB-C, then equalizes, re-clocks and distributes that signal to eight identical HDMI outputs at up to 4K@60Hz 4:4:4 with HDCP 2.3. It is built for spaces where one presenter or media source has to reach many screens, such as large training rooms, divisible spaces, lobbies and overflow seating.

How does the Kramer DA3-28-H work?
Either the HDMI or USB-C input is selected, and the signal is regenerated before it is split to eight HDMI 2.0b outputs at up to 18Gbps. Smart output scaling downscales 4K sources to 1080p on any output whose display does not support 4K, so a mixed display fleet can share one feed.
EDID can come from the connected display or a default, with EDID lock and Force RGB options. Selectable HDCP authorization lets integrators present a non-HDCP input when protection-free content such as personal clips and charts needs to reach equipment without HDCP support.
A CEC mediator with flexible routing powers displays on and off, the RS-232 port can be configured to control external devices, and analog audio is de-embedded from the HDMI or USB-C input for a local sound system. The unit runs from 24V DC and installs above a ceiling or side by side in a rack.

What are the key features of the Kramer DA3-28-H?
- 2x1:8 switching and distribution — Selects HDMI or USB-C and feeds eight identical HDMI outputs.
- 4K@60Hz 4:4:4 — Supports HDCP 2.3 content at up to 18Gbps.
- Smart output scaling — Downscales 4K to 1080p only for displays that need it.
- Intelligent EDID handling — Display or default EDID with lock and Force RGB options.
- Selectable HDCP authorization — Passes protection-free content to non-HDCP equipment.
- CEC mediator — Flexible CEC routing to manage display power.
- Analog audio output — De-embedded from the HDMI or USB-C input.
- Configurable RS-232 — Controls external devices such as displays or projectors.
Where is the Kramer DA3-28-H typically used?
- Training room
- Auditorium
- All-hands room
- Multi-purpose room
- House of worship
- Government space
- Conference room
Technical Specifications
| Inputs | 1 HDMI, 1 USB-C |
| Outputs | 8 HDMI, analog audio |
| Max bandwidth | 18Gbps (6Gbps per graphic channel) |
| Max resolution | 4K@60Hz 4:4:4, 24bpp |
| Content protection | HDCP 2.3 |
| Compliance | HDMI 2.0b |
| Power | 24V DC, 79W max consumption |
| Operating temperature | 0° to +40°C (32° to 104°F) |
| Humidity | 10% to 90% RH, non-condensing |
| Dimensions | 21.46 x 16.30 x 4.36cm (8.45 x 6.42 x 1.72in) W, D, H |
| Weight | 1.3kg (2.8lbs) approx. |
Frequently Asked Questions
What is the difference between the DA3-28-H and DA3-24-H?
Both switch HDMI or USB-C inputs; the DA3-28-H distributes to eight HDMI outputs and the DA3-24-H to four.
Can it mix 4K and 1080p displays?
Yes. Each output downscales to 1080p automatically when its display does not support 4K.
Can the DA3-28-H turn displays on and off?
Yes. Its CEC mediator manages display power, and the RS-232 port can be configured to control external devices.
Does it support protected content?
Yes, it is HDCP 2.3 compliant, and HDCP can be disabled on the input to pass unprotected content to non-HDCP equipment.
What else should I consider for large distribution systems?
For HDMI-only distribution, compare the Kramer VM-8H 1:8 HDMI distribution amplifier. For runs beyond HDMI cable length, add an HDBaseT link such as the Kramer TP-580R receiver at the far display.
Does Creation Networks install Kramer systems?
Yes. We design, install and support complete AV systems nationwide. Browse the Kramer collection or contact us for a quote.
At Creation Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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