The MODEL M4 is a four-zone, rack-mountable distribution amplifier engineered to deliver exceptional Marantz sound from a wide range of streaming music services, locally connected music sources, and your TV. With its sleek design and robust functionality, this amplifier is crafted in Shirakawa, Japan to provide top-tier performance for home audio systems.
| Specification | Details |
|---|---|
| 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 (4 ohm) | 8 x 125 W (4 Ω/ohms, 1 kHz, T.H.D. 0.1%) |
| Frequency Response | 20 Hz to 20 kHz: ±1 dB |
| Connected Loudspeaker Impedance | 4 – 16 Ω/ohms |
| 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) |
| 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 |
| Sound Modes | Stereo, Direct, Virtual, Dialog Enhancer, Night Mode |
| TV Sound Grouping | Yes |
| Audio Format Support | Dolby Digital, LPCM, DSD |
| Stereo PCM / Multi-channel PCM | Yes / Yes |
| 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/192kHz, DSD: 2.8 MHz, 5.6MHz |
| AirPlay | AirPlay 2 |
| Spotify | Spotify Connect |
| Music Services Supported (HEOS) | 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) |
| Wired Connectivity | Ethernet (2) |
| Wireless Connectivity | N/A |
| IR Input | N/A |
| IR Learning | N/A |
| Control System Compatibility | Crestron, 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 |
| Weight (lbs) | - |
| Weight (kg) | - |