Marantz Grand Horizon Luxury Wireless Speaker
Marantz Grand Horizon is a flagship luxury wireless speaker built to deliver true room-filling, high-impact sound while looking like a statement piece in any space. At its core is the Marantz Rise™ GaN FET amplifier platform, engineered for fast, accurate signal amplification and effortless control at high output levels. A purpose-built multi-driver array—anchored by an 8" Marantz Gravity™ bass driver with neodymium magnets—pairs with Marantz Mirage™ DSP to project a wide, immersive soundstage that feels larger than the speaker itself.
For modern listening, Grand Horizon is powered by HEOS® multiroom streaming, making it easy to pull music from major services, local libraries, or a USB drive, and control everything from the HEOS app. It also integrates cleanly into TV setups via HDMI eARC/ARC and supports cinematic formats including Dolby Atmos and Dolby TrueHD. Wrapped in Marantz Radiance™ 360° Seamless Fabric (EcoFiber) and offered in three premium finishes, it’s designed for listeners who want audiophile-grade performance without sacrificing elegance or simplicity.
What It's Good At:
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Big, effortless sound in large rooms with high output capability (up to 122 dB peak SPL at 1 m)
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Immersive TV and movie audio via HDMI eARC/ARC with support for Dolby Atmos formats
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High-resolution playback up to 192 kHz / 24-bit PCM and DSD up to 5.6 MHz
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Premium wireless streaming with HEOS multiroom, AirPlay 2, Bluetooth 5.4, and Spotify Connect
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Elegant, intuitive control with AuraControl™ and an onboard interface for quick playback/volume changes
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Design-forward luxury materials with a seamless 360° fabric wrap and a choice of refined finishes
Marantz Grand Horizon Full Specifications:
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Product Name: Marantz Grand Horizon
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Type: Flagship wireless speaker powered by HEOS™
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Amplifier:
- Total Amplifier Power (FTC): 370 W (FTC Power Output Rating)
- Total Amplifier Power (Peak): 860 W (not tested under FTC standard)
- Total Amplifier Power (Peak, Raw Amplifier Power): 1400 W (not tested under FTC standard)
- Amplifier Topology: Marantz Rise™ GaN FET
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Loudspeaker Array:
- Bass: 1 × 8" Marantz Gravity™
- Wideband: 4 × 3"
- High Frequency: 3 × 1"
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Performance:
- Frequency Response: 28 Hz to 20 kHz (+/-3 dB), 18 Hz (-10 dB)
- Maximum SPL: 111 dB (1 m)
- Peak SPL: 122 dB (1 m)
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Audio Connectivity:
- Analog Input: 1 pair RCA L/R
- Digital Input: 1 × TOSLINK Optical
- USB: 1 × USB-C (Mass Storage)
- HDMI: 1 × eARC / ARC
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Audio Format Support:
- Decoding: Dolby Atmos, Dolby TrueHD, DSD, Dolby Digital+, Dolby Digital, LPCM
- Max PCM Sample Rate / Bit Depth (Stereo): 192 kHz / 24-bit
- Max PCM Sample Rate / Bit Depth (Multi-Channel): 192 kHz / 24-bit (7.1 channel)
- Max DSD Data Rate: 5.6 MHz (DSD ×2)
- Stereo File Formats (HEOS network share or USB):
- WMA: up to and including 192 kbps
- AAC & MP3: up to and including 320 kbps
- WAV, ALAC, FLAC: up to and including 24-bit/192 kHz
- DSD: 2.8 MHz, 5.6 MHz
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Streaming Technologies:
- Bluetooth: BT 5.4
- AirPlay: AirPlay 2
- Spotify: Spotify Connect
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Music Services and Sources:
- Music Services Supported (HEOS; subject to change and local availability): Pandora, Spotify, TuneIn, SiriusXM, Amazon Music, TIDAL, iHeartRadio, Deezer, Deezer HiFi, Mood:Mix, Sony Hi-Res, AWA, QPlay, SoundCloud
- Music stored on mobile device: Yes (iOS, Android, or Kindle Fire)
- NAS (Network Attached Storage): Network share, UPnP
- USB Storage Device Playback: Yes (FAT32, NTFS formatted drives)
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Networking & Control:
- Wired Connectivity: Ethernet
- Wireless Connectivity: Dual band; IEEE 802.11 a/b/g/n/ac/ax
- Wireless LAN Used Frequency Range: 2.4 GHz, 5 GHz, 6 GHz
- Control System Compatibility via TCP/IP: Crestron, Control4, AMX
- HEOS App: iOS, Android, Kindle Fire
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Bluetooth (Detailed):
- Bluetooth Version: 5.4
- Transmission Power: Power Class 1
- Maximum Communication Range: Approx. 98.4 ft / 30 m (line of sight)
- Used Frequency Range: 2.4 GHz band
- Modulation Scheme: FHSS (Frequency-Hopping Spread Spectrum)
- Supported Profiles: A2DP, AVRCP
- Corresponding Codec: SBC
- Transmission Range (A2DP): 20 Hz – 20,000 Hz
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Electrical / Environmental:
- Operating Temperature: 41°F – 95°F (5°C – 35°C)
- Power Supply (North America model): AC 100 – 120 V, 50/60 Hz
- Power Consumption: 120 W
- Power Consumption in Auto Standby (varies by network state):
- Wi-Fi 2.4 GHz (On/Off): 1.8 W
- Wi-Fi 5 GHz (On/Off): 1.8 W
- Ethernet (Off/Off): 1.9 W
- USB with Ethernet (Off/Off): 2.0 W
- Bluetooth (Off/On): 1.7 W
- All with Ethernet (On/On): 2.0 W
- Max Analog Input: 2 Vrms
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General:
- Product Colors: Moon Ray, Midnight Sky, Marantz Champagne
- Included: Certificate of Authenticity, QSG, Power Cable, HDMI Cable
- User Interface: Volume up/down, Play/Pause, multi-colored LED status indicator, Connect button (rear), Bluetooth button (rear)
- Dimensions (H × W × D): 19.41 × 10.04 × 20.83 in
- Dimensions (H × W × D): 493 × 255 × 529.2 mm
- Weight: 46.9 lb
- Weight: 21.3 kg
Marantz Grand Horizon Q&A:
- What makes the Marantz Grand Horizon different from typical wireless speakers?
- Grand Horizon is built around a high-power Marantz Rise™ GaN FET amplifier platform, a multi-driver array, and Marantz Mirage™ DSP to produce large-scale, low-distortion sound with premium streaming and TV connectivity.
- Can I connect the Marantz Grand Horizon to my TV?
- Yes. It includes HDMI eARC/ARC and supports formats like Dolby Atmos and Dolby Digital, making it a strong single-speaker solution for elevated TV and movie audio.
- Does it support Dolby Atmos?
- Yes. It supports Dolby Atmos decoding along with Dolby TrueHD, Dolby Digital+, and other common formats.
- What streaming options are built in?
- You can stream using HEOS multiroom, AirPlay 2, Bluetooth 5.4, and Spotify Connect, plus play from supported services and local libraries.
- What music services work with HEOS on this speaker?
- Supported services (availability can vary) include Spotify, TIDAL, Pandora, SiriusXM, Amazon Music, TuneIn, Deezer/Deezer HiFi, iHeartRadio, SoundCloud, and more.
- Can I play high-resolution audio files?
- Yes. It supports up to 192 kHz/24-bit PCM and DSD up to 5.6 MHz, including FLAC, ALAC, WAV, and DSD files via HEOS network share or USB.
- What physical inputs does it have for wired sources?
- Inputs include RCA analog (L/R), TOSLINK optical, USB-C (mass storage), and HDMI eARC/ARC.
- What will the input delay be for the Marantz Grand Horizon?
- Marantz doesn’t publish a single fixed input-latency value for every setup; for scenario-specific latency expectations (TV, console, external input type), Marantz support can provide the most accurate guidance.
Marantz Grand Horizon Downloads:
Marantz Grand Horizon Info Sheet
Marantz Grand Horizon Manual
In Store Only
