AJA Io 4K Plus Professional Video I/O with Thunderbolt 3 Performance

SKU: AJAIO4KPLUS MFR: IO 4K PLUS
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Key Features

  • Capture pristine video with the AJA Io 4K Plus, supporting up to 4K/UltraHD at 60p for high-quality recordings.
  • Experience low latency video capture via Thunderbolt 3, ensuring real-time responsiveness for critical monitoring.
  • Enjoy broad compatibility with professional software, making the AJA Io 4K Plus a versatile video I/O solution.
  • Easily integrate the AJA Io 4K Plus into your workflow with simple setup and intuitive controls for video capture.
  • Streamline your broadcast setup using stable SDI and HDMI inputs/outputs for reliable, high-resolution video feeds.
  • Get professional-grade video capture without breaking the bank; the AJA Io 4K Plus offers an affordable price.
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Special Order?Estimated to Ship: 08/20/2025
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Shopper : Why Did You Choose This?ALAN W : Recommended computer IO to use with vMix softwareDavid M : needed for QTake mobile system for video assist

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AJA Io 4K Plus Specifications

  • Video Formats

    (4K) 4096 x 2160P 23.98, 24, 25, 29.97, 30, 47.95, 48, 50, 59.94, 60
    (4K) 4096 x 2160PsF 23.98, 24, 25
    (UltraHD) 3840 x 2160P 23.98, 24, 25, 29.97, 30, 47.95, 48, 50, 59.94, 60
    (UltraHD) 3840 x 2160PsF 23.98, 24, 25
    (2K) 2048 x 1080p 23.98, 24, 25, 29.97, 30, 47.95, 48, 50, 59.94, 60
    (2K) 2048 x 1080PsF 23.98, 24, 25, 29.97, 30
    (HD) 1080p 23.98, 24, 25, 29.97, 30, 47.95, 48, 50, 59.94, 60
    (HD) 1080PsF 23.98, 24, 25, 29.97, 30

  • Video Formats (Cont.)

    (HD) 1080i 50, 59.94, 60
    (HD) 720p 50, 59.94, 60
    (SD) 625i 25
    (SD) 525i 29.97

  • Video Inputs

    12G-SDI, SMPTE-2082, 12-bit, 10-bit and 8-bit
    6G-SDI, SMPTE-2081, 10-bit and 8-bit
    3G-SDI, SMPTE-259/292/296/424/425, 12-bit, 10-bit and 8-bit
    4K/UltraHD 4:4:4 (4 x BNC)
    1.5G-SDI, SMPTE 372M, Dual Link HD 4:4:4 (2 x BNC), 12-bit, 10-bit and 8-bit
    1.5G-SDI, SMPTE 292M, Single Link 4:2:2 (1 x BNC), 10-bit and 8-bit
    HDMI v2.0
    30/36 bits/pixel, RGB or YUV, 6 Gbps.
    4K, UltraHD, 2K, HD and SD with HFR support up to 60p (4:2:2), 10-bit and 8-bit

  • Video Outputs

    12G-SDI, SMPTE-2082, 12-bit, 10-bit and 8-bit
    6G-SDI, SMPTE-2081, 10-bit and 8-bit
    3G-SDI, SMPTE-259/292/296/424, 12-bit, 10-bit and 8-bit
    4K/UltraHD 4:4:4 (4 x BNC)
    1.5G-SDI, SMPTE 372M, Dual Link HD 4:4:4 (2 x BNC), 12-bit, 10-bit and 8-bit
    1.5G-SDI, SMPTE 292M, Single Link 4:2:2 (1 x BNC), 10-bit and 8-bit
    HDMI v2.0
    30/36 bits/pixel, RGB or YUV, 6 Gbps
    4K, UltraHD, 2K, HD and SD with HFR support up to 60p (4:2:2), 10-bit and 8-bit

  • Video Outputs (Cont.)

    HDR 10 Support - HDR Info frame metadata, compatible with HDMI 2.0a/CTA-861.3
    HLG Support - compatible with HDMI 2.0b/CTA-861-G

  • Audio Inputs Digital

    16-Channel, 24 and 16-bit SDI embedded audio, 48 kHz sample rate, synchronous
    8-Channel, 24 and 16-bit HDMI embedded audio, 48 kHz sample rate, synchronous

  • Audio Inputs Analog

    8-Channel, 24 and 16-bit D/A analog audio, 48 kHz sample rate, balanced, using industry standard 8x XLR on DB-25 breakout cable (cable not included)
    +24 dBu full scale digital (0dBFS)
    +/- 0.2 dB 20 to 20 kHz frequency response
    Up to 8 channels can be used (if all 8 set exclusively for input)
    Up to 4 channels can be used (if input and output is enabled simultaneously)

  • Audio Outputs Digital

    16-Channel, 24-bit SDI embedded audio, 48 kHz sample rate, synchronous
    8-Channel, 24-bit HDMI embedded audio, 48 kHz sample rate, synchronous

  • Audio Outputs Analog

    8-Channel, 24-bit D/A analog audio, 48 kHz sample rate, balanced, using industry standard 8 x XLR on DB-25 breakout cable (cable not included)
    +24 dBu full scale digital (0dBFS)
    +/- 0.2 dB 20 to 20 kHz frequency response
    Up to 8 channels can be used (if all 8 set exclusively for output)
    Up to 4 channels can be used (if input and output is enabled simultaneously)

  • Downstream Keyer

    Supports graphics with alpha channel over video, matte or framebuffer, or framebuffer content over incoming video or matte

  • Down-Conversion 4K/UltraHD

    Real time, dedicated 4K down-conversion output (1 x BNC)
    4K to 2K down-conversion
    UltraHD to HD down-conversion

  • Reference and LTC I/O

    1 x BNC LTC output
    1 x BNC assignable to Reference video or LTC input

  • Reference

    Analog Color Black (1V) or Composite Sync (2 or 4V) or HD Tri-Level Sync (1V)
    Nonterminating

  • Electrical Interface

    Thunderbolt 3 (2x)

  • Machine Control

    RS-422, Sony 9-pin protocol
    9-pin D-connector pinout is as follows: 1: GND, 2: RX-, 3: TX+, 4: GND, 5: No Connection, 6: GND, 7: RX+, 8: TX-, 9: GND, Shell: GND

  • Power (device only)

    10-20V, 30W typical, 33W max, 70W max with USB-C power delivery to external devices

  • Safe Operating Temperature

    0 to 40 degrees C (32 to 104 degrees F)

  • Safe Storage Temperature (Power OFF)

    -40 to 60 degrees C (-40 to 140 degrees F)

  • Operating Relative Humidity

    10-90% noncondensing

  • Operating Altitude

    <3,000 meters (<10,000 feet)

  • Dimensions (WxDxH)

    8.74 x 8.11 x 1.65" (22.20 x 20.60 x 4.19cm)

  • Weight

    3.4 lbs (1.54kg)

  • UPC Code

    892448000809

About AJA Io 4K Plus

Enhance your professional video production capabilities with the Io 4K Plus, a sophisticated and advanced video I/O interface that leverages the unparalleled speed of Thunderbolt 3. Designed for professionals who demand high-tech performance and reliability, the Io 4K Plus offers a comprehensive set of features that support the latest 4K/UltraHD devices, High Frame Rate (HFR), High Dynamic Range (HDR), and deep color workflows.

The Io 4K Plus stands out with its ability to handle a wide array of formats ranging from SD to HD, UltraHD, and full 4K at frame rates up to 60p. This is achieved over both 12G-SDI and HDMI 2.0 with the simplicity of a single cable, enhancing the efficiency of your setup. Additionally, the device offers HDR 10 and HLG support over HDMI, catering to the evolving needs of HDR workflows.

AJA's Io family is synonymous with desktop I/O power in a portable package. Whether you're moving between desktop and mobile environments, macOS and Windows, the Io 4K Plus provides the versatility and power your projects require. Its compact form factor is ideal for professionals on the go, fitting easily into a backpack alongside your laptop, without the need for bulky additional gear.

The Io 4K Plus is not only compatible with a wide range of professional Mac and Windows software applications but also integrates seamlessly with leading production, post, mastering, and streaming tools from industry giants like Apple, Adobe, Avid, Autodesk, and Telestream. This cross-platform compatibility ensures a smooth integration between your preferred software and AJA's high-quality hardware, allowing you to concentrate on your creative work.

Thunderbolt 3 performance is at the heart of the Io 4K Plus, enabling the transfer of video and audio across a spectrum of resolutions and formats. With dual Thunderbolt 3 ports, the device supports daisy chaining, offering configuration flexibility and simplifying your workflow.

The professional connectivity of the Io 4K Plus is futureproof, with 12G-SDI in and out (also supporting 6G, 3G, and 1.5G SDI) as well as HDMI in and out. This broad range of connectivity options ensures that you can manage today's demanding bandwidth workflows with ease. The HDMI output provides accurate HDR display, bringing your imagery to life with HDR 10 or HLG on a compatible monitor.

Despite its small size, the Io 4K Plus is a powerhouse, fully utilizing Thunderbolt 3's speed, power, and bandwidth to meet all your 4K/UltraHD/2K/HD or SD production needs. Its rugged aluminum construction is durable enough for fieldwork yet sleek enough for the edit suite.

In summary, the Io 4K Plus from AJA is a professional, innovative, and flexible solution that meets the evolving needs of video professionals. It provides powerful workflows in a compact form, ensuring that you can capture, monitor, and output with the highest quality, whether you're in the studio or on location.

AJA Io 4K Plus Features

  • Thunderbolt 3-enabled video I/O interface for seamless 4K/UltraHD/2K/HD capture and output
  • Versatile connectivity with 12G-SDI and HDMI 2.0, supporting a range of video formats and frame rates
  • HDR 10 and HLG compatibility over HDMI for cutting-edge High Dynamic Range workflows
  • Dual Thunderbolt 3 ports for daisy chaining and enhanced configuration flexibility
  • Portable and rugged design with aluminum construction, ideal for field and studio use
  • Cross-platform compatibility with leading professional software on both macOS and Windows

Warranty Information

This product has a limited warranty of 36 months.

Key Features

  • Capture pristine video with the AJA Io 4K Plus, supporting up to 4K/UltraHD at 60p for high-quality recordings.
  • Experience low latency video capture via Thunderbolt 3, ensuring real-time responsiveness for critical monitoring.
  • Enjoy broad compatibility with professional software, making the AJA Io 4K Plus a versatile video I/O solution.
  • Easily integrate the AJA Io 4K Plus into your workflow with simple setup and intuitive controls for video capture.
  • Streamline your broadcast setup using stable SDI and HDMI inputs/outputs for reliable, high-resolution video feeds.
  • Get professional-grade video capture without breaking the bank; the AJA Io 4K Plus offers an affordable price.

What's in the box:

  • AJA Io 4K Plus Professional Video I/O with Thunderbolt 3 Performance
  • AJA 3 Year Limited Warranty