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Kramer VP-427UHD

4K HDBT Receiver / Scaler Tool with HDBaseT and HDMI Inputs

  • Resolutions up to 4K60 (4:2:0)
  • Seamless switching
  • Auto–switching inputs
  • Front panel input selector button
  • Ethernet, IR, RS–232 control and tunelling
  • Built–in pattern generator

Download Specsheet

VP−427UHD is a comprehensive 4K HDBaseT receiver scaler with a local HDMI input. It supports automatic and manual switching between the 2 inputs, with fast and visually seamless transitions. The unit up−scales, down−scales, and cross−scales to resolutions up to 4K@60 (4:2:0). The output resolution is set by the user or follows the native resolution of the source.

  • Comprehensive Receiver/Scaler — Scales signals of all standard resolutions up to 4K (4:2:0) for routing to the HDMI output. Constant output sync prevents signal disruption when switching between inputs and when no video is detected.
  • Flexible Audio Output — Analog balanced stereo and digital S/PDIF outputs for de–embedding the audio output.
  • Data Tunneling — Extend RS–232, IR, and Ethernet over the HDBaseT line.
  • Cost–Effective and Convenient Control Options — Ethernet and RS–232 serial ports, and local control via front panel input selection and OSD menu buttons.
  • Versatile Powering Options — Power the unit with PoE (Power over Ethernet) over the HDBaseT line or with the power adapter.
  • Easy Installation — Single cable connectivity for both the HDBaseT signal and PoE power. Compact MegaTOOLS® fan–less enclosure for surface mounting or side–by–side mounting of 2 units in a 1U rack space with the recommended rack adapter.


  • 1 HDBaseT: On an RJ–45 connector
  • 1 HDMI: On a female HDMI connector


  • 1 HDMI: On a female HDMI connector
  • 1 Balanced Analog Stereo Audio: On a 5–pin terminal block
  • 1 Digital Audio: On a female S/PDIF connector


  • 1 IR: On a 3.5mm mini jack
  • 1 RS–232: On a 3–pin terminal block
  • 1 Ethernet: On an RJ–45 connector


  • Output Resolutions: 480i@60Hz, 576i@50Hz, 480p@60Hz, 576p@50Hz, 720p@50/59/60Hz, 1080i@50/59/60Hz, 1080p@23/24/25/29/30/50/59/60Hz, 1080psf@23/24/25/29/30Hz, 640x480@60/72/75/85Hz, 800x600/72/75/85Hz, 1024x768@60/70/75/85Hz, 1152x864@75Hz, 1280x768@60RB/60/75Hz, 1280x800@60Hz, 1280x960@60Hz, 1280x768@85Hz, 1280x1024/75Hz, 1360x768@60Hz, 1366x768@60Hz, 1400x1050@60RB/60/75Hz, 1440x900@60RB/60/75/85Hz, 1600x1200@60Hz, 1680x1050@60RB/60Hz, 1920x1200@60RBHz, 3840x2160p@24/25/30/50/60Hz
  • Max. Input Resolution: 4K@60Hz (4:2:0)
  • Max. Range: 180m at 1080p@60Hz, 100m (328ft) at 4K@60Hz (4:2:0)
  • Latency: Progressive input — 30ms (approx.), interlaced input — 50ms (approx.)
  • Content Protection: HDCP 1.4
  • Switching Time Between Inputs: <0.5 seconds

Analog Audio

  • Output: +4dBu nominal / 100Ω
  • Audio Sampling Rate: 48kHz for analog audio output

User Interface

  • Controls: Input selection, 1080p reset and freeze buttons, OSD menu
  • Indicators: Selected input, output, HDBaseT connection/link and device power LEDs


  • Source: 12V DC
  • Consumption: 1A


  • Size: MegaTOOLS®
  • Type: Aluminum
  • Cooling: Convection ventilation

Environmental Conditions

  • Operating Temperature: 0° to +40°C (32° to 104°F)
  • Storage Temperature: –40° to +70°C (–40° to 158°F)
  • Humidity: 10% to 90%, RHL non–condensing


  • Included: Power adapter, rubber feet, mounting bracket

Product Dimensions

  • 18.75cm x 14.50cm x 2.54cm (7.38" x 5.71" x 1.00" ) W, D, H

Product Weight

  • 0.7kg (1.5lbs) approx.

Shipping Dimensions

  • 35.10cm x 21.10cm x 7.20cm (13.82" x 8.31" x 2.83" ) W, D, H

Shipping Weight

  • 1.3kg (2.9lbs) approx.


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