Marantz M4

SKU: 747192142636 Brand:



Luxury Performance Group

Finding New Ways to Listen

For decades, Marantz has captivated hi-fi enthusiasts worldwide, delivering generation after generation of highly acclaimed and successful stereo amplifiers, receivers, and CD players. Beautifully designed and exceptional sounding Marantz hi-fi components, AVR, mini-systems, and slimline audio remain foundational to our business. However, today’s customers, especially our primary target for growth, luxury customers, demand new ways to listen, inspiring new products driven by fresh ideas. The STEREO 70s marked the beginning of this journey; the next step was the MODEL M1, our first multi-zone-friendly amplifier.

MODEL M4 Overview

Powerful Amplification

  • 100W of output for each of the four built-in stereo zones (8 x 100W)

HEOS Ecosystem Compatibility

  • Stream via HEOS, AirPlay2, and Spotify Connect with four independent HEOS modules, offering independent listening in each zone.
  • Optical digital inputs for TV audio to MODEL M4 for whole-home TV listening.
  • 4x line ins for analog sources.
  • 4x USB ins for local music library playback.

Designed for Rack Applications

  • 2U height, rack mount ears provided.
  • Wide compatibility with major control systems via HEOS.
  • Thermally triggered fan cooling for robust operation.

Designed for Complete Home Integration

  • Supports leading control systems such as Crestron, Control4, SimpleControl, URC, ProControl, Josh, and more.

Differentiated Distribution

The MODEL M4 is a rack-mountable distribution amplifier designed to reach discerning customers and increase growth opportunities. It has been carefully engineered to offer exceptional sound from a wide range of streaming music services and can also accept locally connected music sources and TV sound. A single MODEL M4 can deliver outstanding Marantz sound throughout your home or even outside if you install outdoor speakers.

The MODEL M4 offers an innovative and intelligent approach to traditional distribution amplifier designs. Everything needed to enjoy excellent sound, including support for wireless streaming via HEOS, AirPlay2, Spotify Connect, TIDAL (including Hi-Res), and more, is included. Just add a network cable and the speakers of your choice to suit your needs and available space. With its ample output power and extensive pre-out support, the MODEL M4 has you covered: it can even handle 2.1 speaker configurations in each room, if that’s your preference.

High-Quality Sound Everywhere

Based on the HEOS platform, the MODEL M4 benefits from all the capabilities available on the service, including upcoming updates to include TIDAL Hi-Fi Plus and Roon Ready support for NAS-served high-resolution audio. This means extensive wireless and wired music streaming support for almost any content you may wish to access, and from almost any device.

For almost all potential buyers of the MODEL M4, there’s no need to plug in external audio sources or manage additional user interfaces to enjoy great sound. Four built-in HEOS modules mean independent listening in four separate rooms of your home. Alternatively, you can group zones to share your favorite music simultaneously in every space. Of course, integrating HEOS into the MODEL M4 means it can be controlled from the HEOS app, making setup and day-to-day operation extremely simple.

If you want to connect local music sources, the MODEL M4 offers plenty of options. Four USB-A inputs support four individual USB hard drives, one per zone. Additionally, four sets of RCA analog outputs allow for connection of four analog source devices, one per zone.

You can even connect your TV. Twin optical digital inputs support up to two TVs in your system, one per zone, supported by onboard Dolby Digital decoding to ensure optimal stereo sound quality from connected TV sources. TV Sound Grouping means you can share TV audio from one zone across your whole home if you wish. Ideal for the big game!

Fully Functional and Flexible

Built in Shirakawa, Japan, the industrial design of the MODEL M4 closely complements the latest generation of Marantz hi-fi and AVR products. However, it has also been carefully specified and engineered to deliver extreme robustness, simple control functionality, and flexible configuration essential to successful home integration.

A 2U-height 19-inch rack-mount design, the MODEL M4 features active thermally triggered fan cooling to support stable closed-rack operation. Its network connectivity relies on twin robust Ethernet connections: one for connection to a local network and one for passthrough to additional daisy-chained devices. Rack-mount ears are included in the box for easy rack installation, if required.

As a HEOS-enabled device, the MODEL M4 can share music with existing Marantz hi-fi or AVR components, with more MODEL M4s, or with the new MODEL M1. This flexibility offers the installer or user dozens of options for specifying and configuring the ultimate Marantz whole-home music distribution system. Multiple MODEL M4s can be paired together to support up to 64 rooms, enough for even the most complex installations and extensive homes.

If desired, the MODEL M4 can also be controlled from integrator-friendly control platforms, such as Crestron and Control4.

Power Where You Need It

The MODEL M4 has more than enough onboard power to drive even demanding speakers across four separate output zones (8 x 100W with 0.05% THD). If you require more output, for example, in a zone with very large speakers, the four stereo power zones can be put into Bridge Mode to deliver even more output, with up to 4 x 200W available. Importantly, the output power of the MODEL M4 is realistic and rated with all channels driven simultaneously.

If even this impressive power output is not sufficient, the MODEL M4 can be paired with offboard power amplifiers in each of its four zones. Alternatively, those same pre-out sockets can be paired with active subwoofers in each zone if desired.

Amplifier Specifications

  • Power Amplifier Rated Output & THD (8 ohm):
    • 8 x 100 W (8 Ω, 20 Hz to 20 kHz, T.H.D. 0.05%)
  • Power Amplifier Rated Output & THD (4 ohm):
    • 8 x 125 W (4 Ω, 1 kHz, T.H.D. 0.1%)
  • Frequency Response:
    • 20 Hz to 20 kHz : ±1 dB
  • Connected Loudspeaker Impedance:
    • 4 – 16 Ω

Audio Inputs / Outputs

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

Inputs Audio Options

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

Audio Format Support

  • Decoding:
    • Dolby Digital, LPCM, DSD
  • Stereo PCM / Multi-channel PCM:
    • Yes / Yes

Stereo File Formats (HEOS Network Share or USB)

  • WMA:
    • Up to 192 kbps
  • AAC & MP3:
    • Up to 320 kbps
    • Up to 24-bit/192 kHz
  • DSD:
    • 2.8 MHz, 5.6 MHz

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):
    • Pandora, Spotify, TuneIn, SiriusXM, Amazon Music, Tidal, Tidal HiRes, 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
  • USB Storage Device Playback:
    • Yes (4) (FAT32, NTFS formatted drives)

Networking & Control

  • Wired Connectivity:
    • Ethernet (2)
  • Wireless Connectivity:
    • N/A
  • IR Input:
    • N/A
  • IR Learning:
    • N/A
  • Control System Compatibility via TCP/IP:
    • Creston, Control4, AMX
  • HEOS® App:
    • iOS, Android, Kindle Fire
  • Trigger Output DC 12V:
    • Yes (4)


  • Product Color:
    • Black
  • User Interface:
    • Reset button, Front power button, Rear power switch
  • Dimensions (W x D x H) Inches:
    • 16.34 x 4.17 x 17.4
  • Dimensions (W x D x H) mm:
    • 415 x 106 x 442