Product code: SPE520GRAWIRCH
Marantz Grand Horizon Wireless Speaker with 360° Hi-Fi Sound – Available in Midnight Sky, Champagne or Moon Ray
Immerse yourself in a new era of luxury wireless audio with the Marantz Grand Horizon – a statement speaker with wide dispersion, audiophile-grade clarity and premium design.
£5,249.00

























-
Marantz Grand Horizon Wireless Speaker
Grand, Room-Filling Performance
The Marantz Grand Horizon delivers exceptional sound with wide 360° dispersion – filling even the largest rooms with lifelike audio. Tuned by Marantz’s sound master and engineered using custom components, it offers dynamic bass, clear mids and a spacious top end. Whether you’re streaming your favourite playlists or watching films, this speaker delivers scale and presence beyond expectation.
Pure Hi-Fi – Without the Wires
Enjoy high-resolution audio with the convenience of modern streaming. The Grand Horizon supports Wi-Fi, Bluetooth and HEOS Built-in multiroom playback. Stream effortlessly via AirPlay 2, Spotify Connect, TIDAL, Amazon Music HD and more – all in full fidelity.
Signature Marantz Sound
Decades of audio heritage are captured in the Grand Horizon’s warm, detailed, and richly dynamic sound. A custom-designed woofer and dome tweeters are housed in an acoustically optimised chassis for enhanced clarity and reduced distortion, even at high volumes.
Statement Design in Two Premium Finishes
Crafted as a centrepiece of the modern home, the Grand Horizon is as elegant as it is powerful. Available in two finishes – Midnight Sky, a deep modern black with metallic undertones, or Moon Ray, a light silver-taupe with satin accents – this speaker blends seamlessly into contemporary interiors while standing out with refined sophistication.
Multiroom Ready with HEOS Built-In
Expand your audio experience across your home by linking the Grand Horizon with other HEOS-compatible Marantz or Denon speakers. Play the same song in sync or choose different sources in each room – all controlled via the free HEOS app.
Intuitive Control
Use the top-mounted capacitive touch controls, the HEOS app, or simply your voice with Alexa, Google Assistant, or Apple Siri (depending on region). Set alarms, change tracks, or adjust volume hands-free.
-
Technical Specification
Feature Specification Audio Drivers Custom full-range woofer, dual tweeters with wide dispersion Frequency Response 50Hz – 20kHz Wireless Connectivity Wi-Fi 2.4/5GHz, Bluetooth, AirPlay 2, Spotify Connect, HEOS Voice Assistant Compatibility Alexa, Google Assistant, Apple Siri (via AirPlay 2) Control Options Capacitive touch, HEOS App, Voice, Apple Home app Multiroom Audio HEOS Built-In Streaming Services Spotify, Amazon Music, TIDAL, Deezer, TuneIn Radio, Apple Music (via AirPlay) Finishes Available Midnight Sky, Moon Ray Dimensions (W x H x D) Approx. 410 x 180 x 180 mm Weight Approx. 5.3kg Power Mains Powered Other Features Premium materials, sleek modern silhouette, wide-angle acoustic design -
About Marantz
Most people enjoy music. But some people are passionate about it. So are we! Music should be reproduced - in our opinion - exactly the way the artist intended, because nothing - absolutely nothing - should get in the way of the music. That's why we at Marantz have only one philosophy: "Because Music Matters."
"The Range" and "Premium Range"
Marantz offers two product line-ups. “The Range” series is known for offering the most flexible system building options imaginable for every lifestyle. And at the very high-end, the “Premium Series” guarantees hi-fi purists the ultimate listening experience.
Further product categories have been developed over the years such as The ‘Reference’ models, faithfully reproducing the purist musical emotion.
Finally, the KI (Ken Ishiwata) models offer unparalleled quality. Ken Ishiwata is a gifted audio designer who believes sound reproduction should touch the listener in a way no other sensation can. His personal signature on a Marantz product is the sign of no-compromise high fidelity.
Featured Products
-
Featured
Bluesound POWERNODE
The Bluesound POWERNODE is the hifi amp reinvented for the streaming age, combining audiophile-grade componentry and multi-room music capabilities to create an intuitive "just add speakers" hi-res sound system for modern music lovers.
£849.00 -
Featured
Bluesound PULSE FLEX 2i
Portable Wireless Multi-Room Music Streaming Speaker The PULSE FLEX 2i makes portable high-fidelity possible with its innovative driver design and compatibility with today’s leading lossless music streaming services.
£249.00 -
Featured
Bluesound PULSE SOUNDBAR+
Wireless Streaming Sound System The Bluesound PULSE SOUNDBAR+ is the ultimate audiophile-grade soundbar for all your home entertainment needs.
£899.00 -
Featured
300W Portable Bluetooth Party Speaker with LED Light Show & Karaoke
Bring big sound, booming bass and a built-in light show to any party with the Hisense Party Storm — the ultimate portable speaker for home, garden or beach.
£249.00 -
Featured
LG OLED83G54LW 83" OLED Smart Television, 4K Ultra HD, Silver, G Rated
OLED HDR 4K Ultra HD Smart TV, 83 inch with Dolby Atmos & One Wall Design, Light Satin Silver
£6,499.00 -
Featured
Marantz CINEMA 70 Dolby Atmos and DTS:X AV Receiver only
Slimline 7.2 Channel AV Receiver with 50W, 8K 6 x HDMI, Dolby Atmos, DTS:X & 8K Ultra HD
£639.00 -
Featured
Marantz Horizon Hi-Fi Wireless Smart Speaker with Voice Control & Multi-Room Audio
Experience legendary Marantz sound in a compact wireless speaker. The Horizon delivers hi-resolution audio, built-in voice assistants, HEOS multi-room streaming, and elegant design — available in Midnight Sky, Champagne and Lunar White.
£3,249.00 -
Featured
Monitor Audio Bronze 300 7G 5.1 AV System – Immersive Home Cinema Sound
Step into cinematic sound with the Bronze 300 7G 5.1 system — precision-built for dynamic home entertainment with room-filling clarity and power.
£2,450.00 -
Featured
Monitor Audio Bronze 300 7G 7.1.2 Dolby AV System – Immersive Home Cinema Audio
7.1.2 Dolby Atmos AV bundle with Bronze 300 towers, C150 centre, FX surrounds, AMS Atmos speakers and V12 subwoofer – full surround sound, one package.
£3,450.00 -
Featured
Monitor Audio Bronze 50 7G 5.1 AV System Bundle – Bronze 50, Centre 7G, On‑Wall & Vestra Sub
Experience immersive surround sound with Bronze 50 7G, Centre 7G, On‑Wall surrounds and Vestra subwoofer — compact design, premium performance, perfect for modern home cinemas.
£1,850.00 -
Featured
Monitor Audio Silver 300 7G Dolby Atmos Cinema 7.1.2 – Premium Immersive Surround Sound
Experience true home cinema with the Monitor Audio Silver 300 7G Dolby Atmos 7.1.2 system – powerful, elegant, and built for immersive precision.
£5,150.00 -
Featured
Onkyo TX-RZ70 11.2-Channel THX Certified AV Receiver
Onkyo TX-RZ70 Flagship 11.2-Channel THX Certified AV Receiver with Dirac Live, 8K HDMI and Multiroom
£2,499.00 -
Featured
Onkyo TX-RZ50 Premium THX Certified 9.2-Channel AV Receiver
Onkyo TX-RZ50 Premium 9.2-Channel THX Certified AV Receiver with Dirac, 8K, Multiroom and premium streaming.
£1,379.00 -
Featured
Trinnov Altitude 32 Reference Immersive Audio Processor
The Ultimate Experience in Immersive Audio
£28,600.00