Anthem MRX 1140 8K

The Anthem MRX 1140 8K stands at the summit of Anthem's MRX receiver range — a statement home cinema processor and amplifier that delivers the kind of audio performance once reserved for separates costing considerably more. With up to 15.2 channels of object-based surround sound, 140 watts per channel of clean, stable power, and the most advanced version of Anthem Room Correction Genesis yet developed, the MRX 1140 8K redefines what an A/V receiver can achieve.

ARC Genesis — Room Correction That Actually Works

At the heart of the MRX 1140 8K is ARC Genesis — Anthem Room Correction Genesis — the most sophisticated room correction system available in any receiver at any price. Using a redesigned, more accurate calibration microphone and Anthem's proprietary measurement algorithms, ARC Genesis analyses your room's acoustic signature across the full frequency range and applies precise, mathematically derived corrections to eliminate the coloration, bass build-up, and smearing that untreated rooms impose on even the finest speaker systems. The result is a soundstage of extraordinary clarity and scale, with imaging that locks performers precisely in space and low-level detail that lesser systems simply obscure. ARC Genesis is available via Anthem's Web User Interface, making calibration and fine-tuning straightforward from any browser on your network.

Power Delivery Without Compromise

Anthem design their amplifier stages with a discipline that most manufacturers reserve only for dedicated power amplifiers. The MRX 1140 8K delivers up to 140 watts per channel across all channels simultaneously — not the cherry-picked, single-channel figures that flatter lesser specifications. This clean, stable power delivery ensures that demanding speaker loads are controlled with authority in every channel, whether the system is processing a delicate two-channel mix or a full 15.2-channel immersive soundtrack.

Object-Based Audio and Immersive Formats

The MRX 1140 8K supports the full range of object-based audio codecs — Dolby Atmos, DTS:X, and IMAX Enhanced — with up to 15.2 channels of processing. This is not a receiver that approximates immersive audio; it is built from the ground up to deliver it with the resolution and dynamic authority these formats demand. Height channels, overhead effects, and precise object placement are rendered with the spatial accuracy that transforms a home cinema from a large television into a genuinely immersive environment.

8K Video and HDMI Connectivity

Seven HDMI inputs and two outputs — including eARC — handle the full demands of a modern source library. Ultra HD signals pass through unaltered at up to 18.2 Gbps, with full support for Dolby Vision, HDR10, and Hybrid Log Gamma. The MRX 1140 8K is 8K-ready, ensuring the installation remains current as display technology continues to advance.

Integrated Streaming

The MRX 1140 8K includes integrated streaming support, allowing direct access to music services without the need for an additional source device. Combined with Anthem's Web User Interface, the receiver is fully controllable from a smartphone, tablet, or browser — a system designed for the way people actually use home cinema today.

Technical Specifications

Who Is It For?

The MRX 1140 8K is the right choice for the home cinema enthusiast who refuses to accept a ceiling on performance — someone building a 9.2, 11.4, or 15.2-channel system where every seat matters and every detail in the soundtrack deserves to be heard. It pairs naturally with the Anthem MCA 525 GEN 2 or Anthem MCA 325 GEN 2 power amplifiers for those who want dedicated amplification on the most critical channels, and with a Paradigm XR13 Subwoofer for bass extension that matches the receiver's ambition. Those building a more modest system should consider the Anthem MRX 540 8K or Anthem MRX 740 as outstanding starting points in the same family.

Buying from Martins Hi-Fi

Martins Hi-Fi has been in Norwich since 1968. Elizabeth Gould runs the business today, and we stock only brands we have heard properly and stand behind. Anthem is a brand we know deeply — we can demonstrate the MRX 1140 8K in our Norwich showroom and walk you through ARC Genesis calibration so you leave understanding exactly what the system will do in your room. Speak to Dave or Chris for home cinema, and we can advise on the right channel configuration, speaker matching, and power amplifier pairing for your specific project.

Contact us at info@martinshifi.co.uk, call 01603 627010, or WhatsApp on 07554 687137. You can read more about how we work on our Why Martins Hi-Fi page. We are at 85–91 Ber Street, Norwich, NR1 3EY.