251 Powered Zone Controller

Designed for in-room and in-rack systems, the 251 Powered Zone Controller contains all the functionality needed to create
a great sounding and flexible Hi-Res Audio zone.

With two powerful, cool-running channels of on-board amplification, the Meridian 251 can comfortably drive a pair of
loudspeakers or a sound bar with our trademark fidelity and High Resolution performance. 


Key Features

IP Control allows for seamless integration and flexibility within the home.

MQA delivers master quality audio in a file that’s small enough to stream or download.

Lip Sync realigns audio and video following separation to ensure that there is no delay.

Meridian High Resolution [MHR] allows the secure movement of high resolution digital audio, without degradation or loss in quality.



With its extensive Research and Development programme Meridian has pioneered the development of a host of innovative audio technologies many of which feature in today’s Meridian products.

IP Control allows for seamless integration and flexibility within the home. Also includes both digital and analogue inputs and outputs.

Sourced from the original studio master recording as approved by the creative team, MQA combines an advanced new digital sampling technology that captures extremely high frequency timing and detail in an audio signal with an equally novel system to “encapsulate” that data into a form for delivery using any lossless file format or streaming. The listener’s decoder reconstructs the entire original signal, bringing up an indicator confirming that what they are hearing is exactly the same as the original master. Without the decoder, the listener enjoys CD quality reproduction. Its most advanced form, “MQA Studio”, uses the technology in the studio to generate an even higher quality master recording as the source.

Video processing typically delays the picture. As sound travels slower than light, the effect of the sound arriving before the picture is highly noticeable. For installations where the audio and video are separated before video processing, the Meridian 218 has adjustable audio delay to realign the audio with the video.

The Meridian Ultra DAC is our first product that gives the ability to select between three DSP upsampling filter options when playing back standard resolution audio files. This function relates directly to the material you are playing as opposed to the genre. The options include long, medium or short filters:

Long: A filter with more stages, giving a steeper response. It removes artefacts created by pre-echo or noise in the recording and mastering process, giving a more musical sound where artefacts are present.

Medium: A good compromise between removing artefacts and preserving spatial information.

Short: A filter with fewer stages, giving a shallower response. It provides the best time response, emphasising the spatial cues in well recorded music.

As pioneers and leaders in the field of Digital Signal Processing (DSP) technology, Meridian is able to deliver your music authentically to recreate the passion and involvement of your musical moments. Power-efficient, active DSP crossovers are individually tailored to distribute music to each speaker, bringing your music to life.

Each sample of a digital recording must remain evenly spaced in time. Unfortunately, timing can vary, especially when reading discs. This is “jitter”, degrading music's sense of space and diminishing realism. Meridian's multiple “First In, First Out” buffering system minimises jitter, ensuring perfect timing and improved clarity. You enjoy a clearer feeling of the instruments and their interrelationship.

Traditional audio systems often require large, expensive cables to maintain their performance. Meridian's SpeakerLink uses an “Ethernet style” cable that delivers pristine digital sound and control down a single cable between Meridian components. The result is simple, unobtrusive, and cost-effective cables that are easy to install


MQA is a technology that captures the full magic of an original studio performance. Using pioneering scientific research into how people hear, MQA delivers master quality audio in a file that’s small enough to stream or download – the days of sacrificing quality for convenience are over. Visit mqa.co.uk for more information.

Uses a complex digital filter to double the rate of samples from the source to improve resolution of the finer details in the record. This means that even with a standard source such as CD using our upsampling technology we are able to significantly enhance the listening experience.


One 2-channel digital coaxial S/PDIF input. 44.1kHz to 192kHz sampling and up to 24-bit

One 2-channel Meridian SpeakerLink input. 44.1kHz to 192kHz sampling and up to 24-bit

One 2-channel digital optical TOSLINK input. 44.1kHz to 96kHz sampling and up to 24-bit

One 2-channel analogue input on RCA phono connectors

One network input (Ethernet) for connection to a Roon system or an alternative control interface


Speaker outputs on Phoenix connectors

24-12 AWG Compatible

2 x 100w into 4Ω nominal load (2 x 65w into 8Ω)

40kHz Bandwidth

2-channel line-level analogue output on RCA phono connectors

Twin 192kHz 24-bit DACs


LEDs to indicate source selection and MQA status


HEIGHT: 42mm [1.65in] (without feet)

WIDTH: 204mm [8.03in] 

DEPTH: 221mm [8.7in] (226mm inc. connectors) [8.89in]

WEIGHT: Standalone: 2.5Kg [5.5lbs]


Advanced linear power supply: 110–120V ac 50–60Hz | 220-240V ac 50-60Hz


1U tall rack kit available with space for two units

Optional VESA mount brackets


IP Control

IR on 3.5mm jack

Meridian Comms

Find Your Nearest

You can’t fully appreciate Meridian until you experience our products for yourself.


The 218 Zone Controller contains all of the functionality needed to create a Hi-Res Audio zone.
The Meridian 258 is our dedicated rack-mount Eight Channel Power Amplifier.