Marantz MODEL M4 Four-Zone Streaming Distribution Amplifier with HEOS
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Marantz MODEL M4 Four-Zone Streaming Distribution Amplifier with HEOS
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Overview
Bring exceptional music into more rooms with the Marantz MODEL M4 Four-Zone Distribution Amplifier. Crafted in Shirakawa, Japan, this eight-channel amplifier combines powerful amplification, independent streaming, and flexible installation options in one rack-ready component.
With four independent HEOS modules, MODEL M4 lets different rooms enjoy different music simultaneously—or brings compatible zones together for a shared soundtrack. Its 100 watts per channel into 8 ohms provides substantial power for distributed speakers, while bridge operation offers additional output for demanding installations.
Marantz Musical Digital Filtering (MMDF) helps preserve natural detail and musical expression. Stream through HEOS, AirPlay 2, or Spotify Connect, explore compatible network music libraries, or connect local sources through analog and optical inputs.
Each zone includes configurable preamplifier outputs for external amplification or powered-subwoofer integration. Adjustable high-pass and low-pass filters help tailor the system to your speakers and listening spaces.
With active cooling, an included rack-mount kit, individual zone triggers, and support for compatible automation systems, MODEL M4 provides a practical foundation for professionally installed whole-home audio.
Key Features
- Eight amplified channels serving four stereo zones.
- Four independent HEOS streaming modules.
- 100W per channel into 8 ohms.
- 125W per channel into 4 ohms.
- Bridge configuration supporting two higher-powered stereo zones.
- Marantz Musical Digital Filtering.
- HEOS, AirPlay 2, Spotify Connect, and Roon Ready.
- Four stereo analog inputs and two optical inputs.
- Four USB-A ports for storage-device playback.
- Configurable preamplifier/subwoofer outputs per zone.
- Adjustable speaker and subwoofer filtering.
- Four 12V trigger outputs.
- Dual Ethernet connections.
- Active cooling and included rack-mount hardware.
- Compatible Control4, Crestron, and AMX integration.
Amplifier Specifications
| Specification | Details |
|---|---|
| Product type | Streaming distribution amplifier |
| Amplified channels | 8 |
| Standard zone configuration | 4 stereo zones |
| Independent HEOS modules | 4 |
| Output into 8 ohms | 100W per channel, 20Hz–20kHz, 0.05% THD |
| Output into 4 ohms | 125W per channel, 1kHz, 0.05% THD |
| Bridged output | 4 × 200W into 4 ohms, 1kHz, 0.05% THD |
| Fully bridged configuration | 2 stereo zones |
| Compatible speaker impedance | 4–16 ohms |
| Frequency response | 20Hz–40kHz, ±3dB |
| Optical-input signal-to-noise ratio | 103dB |
| Analog-input signal-to-noise ratio | 100dB |
| Analog input sensitivity / impedance | 200mV / 20kΩ |
| Maximum analog input level | 2.5V |
| Digital filtering | Marantz Musical Digital Filtering |
Connections and Installation
| Specification | Details |
|---|---|
| Speaker outputs | 8 channels across 4 stereo zones |
| Speaker connections | Binding posts |
| Analog inputs | 4 stereo RCA pairs |
| Optical digital inputs | 2 TOSLINK |
| Zone preamplifier outputs | 4 stereo RCA pairs |
| Subwoofer configuration | Zone pre-outs configurable for powered-subwoofer use |
| USB connections | 4 USB-A ports |
| Ethernet connections | 2 |
| Trigger outputs | 4 × 12V DC, one per zone |
| HDMI | None |
| Built-in Wi-Fi | No |
| Bluetooth | No |
| IR input / learning | No |
| Control integration | TCP/IP with compatible Control4, Crestron, and AMX systems |
| App control | HEOS |
| Cooling | Active |
| Rack mounting | Supported; mounting kit included |
| Power amplifier mode | Supported |
Audio Processing and Zone Adjustment
| Specification | Details |
|---|---|
| Channel assignment | Stereo or Dual Mono |
| Sound modes | Stereo, Direct, Virtual |
| Additional audio functions | Dialog Enhancer, Night Mode |
| Decoding | Dolby Digital, LPCM, DSD |
| Speaker high-pass filter | Adjustable, 40–250Hz |
| Subwoofer low-pass filter | Adjustable, 40–120Hz |
| Bass adjustment | ±5dB |
| Treble adjustment | ±5dB |
| Balance adjustment | −15dB to +15dB |
| Volume limit | Adjustable, 80–100% |
| Zone grouping | Supported through HEOS |
| TV sound grouping | Supported with compatible sources and HEOS devices |
Streaming and Music Playback
| Specification | Details |
|---|---|
| Streaming platform | HEOS Built-in |
| Additional technologies | AirPlay 2, Spotify Connect, Roon Ready |
| Network connection | Wired Ethernet |
| Network music sources | Compatible PC/NAS libraries and network shares |
| USB drive formats | FAT32 and NTFS |
| Supported file formats | MP3, AAC, WMA, WAV, ALAC, FLAC, DSD |
| WAV / ALAC / FLAC | Up to 24-bit/192kHz |
| DSD | 2.8MHz and 5.6MHz |
| MP3 / AAC | Up to 320kbps |
| WMA | Up to 192kbps |
| Independent room playback | Up to four separate HEOS streams |
| Shared room playback | Group compatible zones and HEOS devices |
Physical and Electrical Specifications
| Specification | Details |
|---|---|
| Finish | Black |
| Dimensions without rack brackets, W × H × D | 442 × 106 × 415mm |
| Approximate dimensions, W × H × D | 17.4 × 4.17 × 16.34 inches |
| Width with rack brackets | 481mm / approximately 18.94 inches |
| Weight without brackets | 8.0kg / approximately 17.6 lbs |
| Weight with brackets | 8.2kg / approximately 18.1 lbs |
| Power supply | AC 100–240V, 50/60Hz |
| Power consumption | 265W |
| Quick Start consumption | 22W |
| Deep standby consumption | 0.5W |
| Operating temperature | 41–95°F / 5–35°C |
| On-unit controls | Front power button, reset button, rear power switch |
| Power cord | Detachable |
What’s Included
- Marantz MODEL M4 amplifier
- Power cord
- Ethernet cable
- Two rack-mount brackets
- Eight bracket screws
- Quick Start Guide
- Safety instructions
- Warranty documentation
- Extended protection-plan information
Important Notes
Speakers, powered subwoofers, source components, speaker wiring, and installation services are sold separately. A wired Ethernet connection is required for network operation; MODEL M4 does not include Wi-Fi or Bluetooth.
Bridging combines zone pairs and reduces the available amplified stereo zones from four to two when fully bridged. Zone preamplifier outputs are configurable for stereo or subwoofer operation rather than providing separate simultaneous connections for both functions. Television audio connects through optical digital inputs.
Streaming services may require subscriptions, and availability varies by region. Professional installation and system configuration are recommended.
Give Every Room Its Own Soundtrack with The Grid HiFi
Enjoy your morning playlist in the kitchen, relaxed listening in the bedroom, and music for entertaining throughout your home. Shop the Marantz MODEL M4 at The Grid HiFi, and let our team design a complete audio system with the right speakers, zone configuration, and control integration.
Call The Grid HiFi: (713) 218-8120 for availability, whole-home audio planning, and professional installation assistance.
FAQs
Please read our FAQs page to find out more.
Do you price match?
Yes. We match any authorised dealer, including big-box retailers. If you find the same product at a lower price, contact us and we'll match it.
Do you offer free shipping?
Yes — free shipping on every order, with 2-day delivery available on most products. Easy returns and exchanges are included.
Where is your showroom?
We're at 6362 Alder Drive, Houston, Texas. The showroom lets you hear and compare reference-level systems in person before making any decisions. If you're considering a larger purchase or installation, it's well worth the visit.
Can I buy online without visiting the showroom?
Yes. The full product range is available through the online store with free nationwide shipping. For more complex system builds, speaking with one of our advisers first tends to lead to a better result.
Do you offer financing?
Yes. Special financing is available through the BrandSource Credit Card for qualifying purchases, allowing you to spread payments over time with no annual fee. Promotional rebate savings are also available periodically. See the financing page for full details.
Do you install systems as well as sell equipment?
Yes — installation is central to what we do. We design and install whole-home audio and video, home theaters, media rooms, outdoor audio, lighting and motorised shades, and full smart home automation.
Do you provide support after installation?
Yes. We provide ongoing service and support to ensure systems continue performing as intended — not just on installation day, but over the long term.