Marantz Grand Horizon - Luxury Wireless Speaker

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:

• Big, effortless sound in large rooms with high output capability (up to 122 dB peak SPL at 1 m)
• Immersive TV and movie audio via HDMI eARC/ARC with support for Dolby Atmos formats
• High-resolution playback up to 192 kHz / 24-bit PCM and DSD up to 5.6 MHz
• Premium wireless streaming with HEOS multiroom, AirPlay 2, Bluetooth 5.4, and Spotify Connect
• Elegant, intuitive control with AuraControl™ and an onboard interface for quick playback/volume changes
• Design-forward luxury materials with a seamless 360° fabric wrap and a choice of refined finishes

Marantz Grand Horizon Full Specifications:

• Product Name: Marantz Grand Horizon
• Type: Flagship wireless speaker powered by HEOS™
• 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
• Loudspeaker Array:
  • Bass: 1 × 8" Marantz Gravity™
  • Wideband: 4 × 3"
  • High Frequency: 3 × 1"
• 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)
• Audio Connectivity:
  • Analog Input: 1 pair RCA L/R
  • Digital Input: 1 × TOSLINK Optical
  • USB: 1 × USB-C (Mass Storage)
  • HDMI: 1 × eARC / ARC
• 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
• Streaming Technologies:
  • Bluetooth: BT 5.4
  • AirPlay: AirPlay 2
  • Spotify: Spotify Connect
• 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)
• 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
• 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
• 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
• 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