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UHD722 HDMI Processor

Here you will find all of the information that you require to get the most out of your UHD722 HDMI Processor.

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UHD722 Product Overview

The terminology surrounding higher resolution video can cause confusion. There is a plethora of standards and specifications relating to the subject and “4K” and “UHD” are often used as generic terms to denote higher resolution video material. Technically speaking, the UHD722 handles video within the specification of HDMI 2.0b. In practice this means that the UHD722 is compatible with most consumer products which are designated as “4K” or “UHD”.   

All seven inputs support HDMI 2.0b.

It supports HDMI 1.4 rather than HDMI 2.0b, so it cannot output UHD material.

The behaviour of the outputs is determined by the design and behaviour of all the products in the chain from source to display. Signals sent over HDMI are encrypted and the UHD722 takes part in a sequence of “handshaking” between all the products in the chain and this will determine which video signal is displayed. In practice, this means some product combinations will result in UHD video being output from "HDMI Out 1" while "HDMI Out 2" will go blank while other combinations will result in 1080p (2K) video being sent out of both HDMI outputs.

The UHD722 does not feature the connectivity to does this. One method for achieving it would be to use an external HDMI “splitter”. This device, which would need to be HDCP 2.2 compliant, could be fed from the output "HDMI Out 1".

Yes. 3D video was part of the HDMI 1.4 specification and the UHD722 complies with HDMI 2.0b which encompasses HDMI 1.4.

Yes. The UHD722 complies with HDMI 2.0b which encompasses HDMI 1.4.

No. Only the “HDMI Out 1” output is capable of passing UHD video.

No. These streams can be handled by the product, but they are passed to the audio outputs without being decoding, so the device “downstream” of the UHD722 would need to be capable of decoding them.

The UHD722 cannot decode these streams itself, but its inclusion in a system can allow these lossless streams to be played in an optimal way.  

The source should be set to output PCM. The terminology used in the set-up menus can vary, but the vast majority of such sources feature the ability to do this.

Yes. The methods used by source products to access and decode lossless streams can be compared to the way a compressed file is extracted and read by a computer. Sources do not vary in this regard, so the purchase price has no direct bearing on this aspect of the source’s performance. There is understandable scepticism to this fact in some quarters due to the residual knowledge that the quality of decoding earlier formats, such as those from DVD-Video, could vary according to the design of the source product.

This connection provides a Meridian comms connection to allow the UHD722 to be integrated within a Meridian system. The connection can be carried out in two ways:

i) The UHD722 can be directly connected to an otherwise unused SpeakerLink input on another product using a network-type cable.

ii)The UHD722 can be connected to a DIN-type Meridian comms socket on another product in the rack using the Meridian Comms Adapter – supplied with the product. The adapter has an RJ45 socket which accepts a SpeakerLink cable and 5-pin DIN socket for a Meridian 5C lead.

The Speakerlink output of the UHD722 carries digital audio only when fed from the ARC (Audio Return Channel). It falls silent when any of the standard HDMI inputs are selected. Hence, if the UHD722 is to be used to provide a two-channel signal, a single digital interconnect fed from the “1/2” phono (RCA) socket should be used. If feeding a pair of Meridian loudspeakers which have only Speakerlink inputs, then a Meridian AC12 adapter can be used to convert the connection type. In such an arrangement, the AC12 also provides a suitable connection for Meridian comms to be fed from the UHD722 via the Meridian Comms Adapter - supplied with the product.

No. Although the two sockets mentioned are the same physical type, the signals they carry are not compatible. The MMHR Output socket on the UHD722 is intended to be connected to a suitably-equipped Meridian surround controller, rather than a DSP loudspeaker.

On the set-up program, under the “Audio” tab within “Properties” of the UHD722, the setting “Linear PCM” should be set to “6 Ch. Three digital interconnect leads should be connected between the two units. On the UHD722, the outputs labelled “1/2”, “3/4” and “7/8” should be connected to the “L/R”, “C/LFE” and “SURR” input sockets respectively on the surround controller.

The addition of any device to an HDMI set-up can introduce the possibility of a compatibility issue. The handshaking and encryption used by HDMI is particular prone to vagaries with various cable types. If any cables are over the maximum seven metres laid out by the HDMI specification, then they may work in one combination, but not another. If problems arise, alternative cables should be tried. Further to that, it may be necessary to substitute any conventional HDMI cable over seven metres in length with one of the proven installation solutions which send HDMI over alternative connection methods, such as network cables. It should be noted that the seven metre limit also applies to the total length of any combination of cables linked by HDMI couplers.

No. The UHD722 takes the EDID information relating to video capabilities from the display device and combines it with EDID information determined by the audio configuration of the UHD722. The audio capabilities of the display are ignored. This causes the source product to send video appropriate for the display along with audio appropriate for the audio product being used with the UHD722. The UHD722 separates the audio and video signals and outputs them from the relevant sockets.

Yes. "HDMI Out 1" supports ARC.

No. Audio fed to the UHD722 via ARC is routed directly to the product’s Speakerlink output bypassing the DSP processing used to enhance sound-quality on other audio outputs.

The most common cause of this problem relates to the capabilities of HDMI cables. Many cable specifications include terms such as “4K” or “4K ready”. However, “4k” is not a standard, it is a resolution. UHD (Ultra High Definition) IS a standard which encompasses, amongst other things, HDCP 2.2, 3840x2160 resolution, colour space, frame rate and dynamic range. This pushes the required data rate up to 18.2 Gbps. “4K” does not require HDMI 2.0 or HDCP 2.2, UHD absolutely DOES require both of these features.

You should check all cables in the signal path support 18.2 Gbps. This advice also applies to any HDMI extension products (sometimes referred to as “baluns”) used in the path. Many of these do not comply with the standards required.

HDMI 2.0, which is backwards compatible with earlier versions of the HDMI specification, significantly increases bandwidth up to 18 Gbps and adds key enhancements to support market requirements for enhancing the consumer video and audio experience.

Yes. HDMI 2.0 includes support for BT.2020 colorimetry with 10 bits of colour depth.

Video formats defined in BT.2020 and supported by HDMI 2.0 specification:

  • 2160p, 10/12 bits, 24/25/30Hz, RGB/4:2:2/4:4:4
  • 2160p, 10/12 bits, 50/60Hz, 4:2:0/4:2:2

Here are the formats supported...


8 bit

10 bit

12 bit

16 bit






















No. To provide flexibility in the variety of sources that can be used with the UHD722, HDMI inputs 1, 2, 3, 4 and 6 have been designed for best compatibility with UHD/HDMI 2.0 sources. Inputs 5 and 7 have been designed for best compatibility with legacy devices that use the earlier HDMI 1.4a standard (DVD players, HD satellite boxes etc.) So, if you have an older device which is having issues with its picture or sound, ensure it is connected to input 5 or 7 and the UHD722 is configured accordingly.

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