Marantz MODEL M4 Four-Zone Distribution Amplifier

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The MODEL M4 is a four-zone, rack-mountable distribution amplifier engineered to offer superb Marantz sound from a wide range of streamed music services, locally connected music sources, and your TV.

Introducing The Marantz MODEL M4 Four-Zone Distribution Amplifier

The MODEL M4 offers an innovative and intelligent take on traditional distribution amplifier designs. A rack-mountable distribution amplifier for dedicated music lovers, it delivers superior sound from a wide range of streamed music services, locally connected music sources, and your TV (via the Optical inputs). The MODEL M4 has been carefully engineered to deliver the extreme robustness, simple control functionality, and flexible configuration that is essential to successful home integration.

Key Features:

• 8 x 100 W (8ohms, 20 Hz to 20 kHz, T.H.D. 0.05 %)
• Supports HEOS, AirPlay2, Spotify Connect
• 192/24 High-Resolution music support (FLAC, ALAC, WAV, DSD)
• Marantz Musical Digital Filtering (MMDF)
• Dual Optical inputs for connecting a TV (with TV Sound Grouping)
• Dual ethernet network ports
• 12V trigger out per zone and Bridge mode
• 4 x Stereo analogue inputs
• 4 x Stereo pre-outs for subwoofers
• 4 x USB Mass storage inputs
• Crestron, Control4, AMX Control System Compatibility via TCP/IP
• Perfectly sized for rack mounted design and active cooling
• Rack kit included
• Made in Japan

Power Where You Need It

MODEL M4 delivers enough power to drive speakers across four rooms in your home. For even more power, use Bridge Mode which offers up to 4 x 200W of output.

Any Sound, Anywhere

Stream your favorite music or TV audio (via the Optical inputs), independently or grouped, in four different rooms with MODEL M4’s four built-in HEOS modules.


Fully Featured, Fully Flexible

With all the onboard features every integrator could need, MODEL M4 is extremely robust, easy to use, and flexible, making multi-room effortless.

Engineered for High Resolution

Whether it’s using streamed services, your network, optical digital, or USB, with MODEL M4 you’ll experience your sound with the high resolution it deserves.

Marantz Musical Digital Filtering

MMDF is a unique and sophisticated digital filtering technology that reveals the natural detail and tonality in sound.


HEOS Built-in

With HEOS® Built-in technology, use the HEOS app to access all the music services available on the HEOS platform. Also with other connected HEO enabled devices you can enjoy your favourite music in any room of your home for a wireless, whole-home audio experience. Play the same song in every room or select a different song for each connected room - the choice is yours.

In addition to HEOS, MODEL M4 supports Spotify Connect and AirPlay2, ensuring wide- ranging wireless music streaming for almost any content you may wish to access, and from almost any device. You can even play audio from a locally connected USB-A drive, making this compact product a powerhouse of connected, streamed and network-served high-resolution audio.


Model Number MODELM4/EX1BAU


Power Amplifier Rated output & THD (8 ohm): 8 x 100 W (8 Ω/ohms, 20 Hz to 20 kHz, T.H.D. 0.05 %)
Power Amplifier Rated output & THD (4ohm): 8 x 125 W (4Ω/ohms, 1 kHz, T.H.D. 0.1%)
Frequency Response: 20 Hz to 20 kHz : ±1 dB
Connected loudspeaker Impedance Audio Inputs / Outputs: 4 – 16 Ω/ohms

Audio Inputs / Outputs

Loudspeaker Binding Posts: 4-way binding posts
Digital Inputs: TOSLINK (2)
Analogue Inputs: RCA L/R (4)
Preouts: RCA L/R (4)
Subwoofer Out: RCA Mono (4) (selectable)

Audio Options

Channel Assignments: Stereo (Default), Dual Mono
Volume Limit: 80-100%
Balance: -15dB to +15dB
Adjustable High Pass / Low Pass Filters: 40-250 Hz / 40-120 Hz
EQ: Bass, Treble -5dB to +5dB
TV Sound Grouping: Yes

Audio Format Support

Decoding: Dolby Digital, LPCM, DSD
Stereo File Formats (HEOS network share or USB): WMA: up to and including 192 kbps AAC & MP3: up to and including 320 kbps
Stereo PCM / Multi-channel PCM: WAV, ALAC, FLAC: up to and including 24-bit/192kHz

Streaming Technologies

Bluetooth Receive: N/A
Bluetooth Transmit: N/A
AirPlay: AirPlay 2
Spotify: Spotify Connect

Music Services and Sources

Music Services Supported (HEOS, subject to change and local availability): Spotify, TuneIn, Amazon Music, Tidal, Tidal HiRes, Deezer, Deezer HiFi, Mood:Mix, Sony Hi-Res, SoundCloud
Music stored on mobile device: Yes (iOS, Android or Kindle Fire)
NAS (Network Attached Storage): Network share, DLNA
USB Storage Device Playback: Yes (4) (FAT32, NTFS formatted drives)

Networking & Control

Wired Connectivity: Ethernet (2)
Wireless Connectivity: N/A
Trigger out DC 12V: Yes (4)
Control System Compatibility via TCP/IP: Crestron, Control4, AMX
HEOS App: iOS, Android


Available Colours: Black
User Interface: Reset button, Front power button, Rear power switch
Dimensions (W x D x H) mm: 442 x 415 x 106

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5 Years
This Marantz amplifier is covered under warranty in Australia for 5 years.

If you experience any issues with this product please don't hesitate to contact us.
How much does delivery cost?
We offer free post on all orders over $29 to anywhere within the Australian mainland and Tasmania.

Can I pick up my purchase from your store?
Yes. You can usually pick up your order from one of our stores. We recommend that you contact us first to ensure your order is ready for collection.

What happens if I'm not happy with my product when it arrives?
All change of mind returns must be in as new condition, in original packaging. We provide a generous 30-day change-of-mind guarantee on our products (unless otherwise stated). All change of mind returns must be in as new condition, in original packaging.

Please visit our FAQ page for answers to other frequently asked questions or contact us if you have any other questions or comments.