The AJA Hi5-4K-Plus is a compact, high-performance converter designed for the reliable, bidirectional conversion of signals between the SDI and HDMI domains, supporting resolutions up to 4K Ultra HD. As an evolution of the popular Hi5 series, this "Plus" model enhances functionality with features like built-in audio de-embedding via a 3.5mm output, increased power flexibility, and advanced signal management, making it an indispensable tool for broadcast, production, and post-production workflows. It excels at bridging professional broadcast cameras, switchers, and recorders that utilize SDI connectivity with consumer and prosumer monitors, projectors, and capture cards that rely on HDMI. The device is engineered for signal integrity, ensuring that critical timing, color space, and metadata are accurately translated between formats, which is essential for maintaining picture quality in critical viewing and monitoring applications.

This converter handles a comprehensive range of video standards, from legacy SD formats all the way up to 4K at 60Hz, with support for various color spaces including Rec. 709 and Rec. 2020. A key feature is its robust handling of high dynamic range (HDR) metadata, allowing for the accurate passthrough of HDR10 and HLG information from an SDI source to an HDR-capable HDMI display. The unit also manages HDCP 2.2 content protection seamlessly, enabling playback of protected content on compliant monitors. The integrated 3.5mm audio output provides a straightforward method for extracting embedded audio from the SDI stream for headphones or a small analog speaker, adding a layer of monitoring convenience without requiring additional equipment.

Designed for durability and ease of use in both fixed installations and field kits, the Hi5-4K-Plus features a rugged all-metal enclosure and offers multiple powering options. It can be powered via the included external AC adapter or directly through its USB-C port from a computer or compatible battery pack, greatly enhancing its portability for on-location work. Status LEDs clearly indicate signal presence, format, and power state, allowing for quick verification of operation. By combining broad format support, critical signal processing features, and a flexible, rugged design, the AJA Hi5-4K-Plus provides a dependable, professional-grade solution for the myriad conversion challenges faced in modern video production environments.