Marantz MODEL M1 Wireless Streaming Amplifier

100 Wpc class-D amplification with HEOS streaming, high-resolution audio, HDMI eARC, and Apple AirPlay 2

The Marantz MODEL M1 combines a powerful stereo amplifier, high-resolution digital audio streaming, and extensive connectivity in a compact component that can serve as the heart of a complete music system. Delivering 100 W per channel into 8 Ω and 125 W per channel into 4 Ω, the MODEL M1 offers the power to drive a wide range of loudspeakers while taking up remarkably little space.

Designed and manufactured in Shirakawa, Japan, the MODEL M1 brings Marantz's decades of audio engineering experience to a modern, streamlined system. With HEOS Built-in, Apple AirPlay 2, Bluetooth, Spotify Connect, and HDMI eARC, it can handle everything from high-resolution music streaming to television sound without the need for separate components.

High-Power Amplification in a Compact Design

At the heart of the MODEL M1 is a high-efficiency class-D amplifier designed to deliver substantial power with low distortion. Its 100 W per channel output into 8 Ω is rated across the full audible frequency range, with total harmonic distortion of just 0.05%. The amplifier is also compatible with loudspeakers having nominal impedances from 4 to 16 Ω, making it a versatile choice for bookshelf and floorstanding speakers.

Marantz uses a digital-direct amplification architecture that keeps audio in the digital domain until the amplification stage, minimizing unnecessary signal conversion. The company's proprietary Marantz Musical Digital Filtering (MMDF) technology is designed to preserve the natural detail and tonal character of music, contributing to the refined sound for which Marantz is known.

High-Resolution Music Streaming With HEOS

With HEOS Built-in, the MODEL M1 provides convenient access to music streaming services, internet radio, and locally stored digital music. The HEOS app allows listeners to browse music, select sources, adjust volume, and control playback from a smartphone or tablet. Supported services include Amazon Music, TIDAL, Spotify, Pandora, Deezer, and others, with availability varying by region.

For listeners with their own digital music libraries, the MODEL M1 supports high-resolution PCM files up to 24-bit/192 kHz and DSD files at 2.8 MHz and 5.6 MHz. Music can be played from compatible network-attached storage devices, computers on the local network, or USB storage connected directly to the amplifier.

Apple AirPlay 2 makes it easy to stream directly from an iPhone, iPad, or Mac, while Bluetooth provides a convenient wireless connection for compatible devices. Spotify Connect offers direct control of Spotify playback from the Spotify app.

Multiroom Audio Made Simple

The MODEL M1 can also be part of a larger HEOS multiroom audio system. Connect additional HEOS-enabled Marantz or Denon components throughout the home, and use the HEOS app to play different music in different rooms or synchronize playback across multiple listening areas.

Its small footprint makes the MODEL M1 particularly well suited to bedrooms, offices, secondary listening rooms, and installations where a traditional full-size amplifier would be impractical. Multiple units can be used to build a flexible whole-home audio system, with independent control of each listening zone.

Better TV Sound With HDMI eARC

The MODEL M1 is equally capable as the centerpiece of a television audio system. Its HDMI eARC connection allows audio from a compatible television to be played through a pair of conventional stereo loudspeakers, providing an alternative to a soundbar without requiring a separate AV receiver.

Built-in Dolby Digital and Dolby Digital Plus decoding enables the amplifier to handle audio from television broadcasts, movies, and streaming video services. Dedicated listening modes include Virtual, Dialog Enhancer, and Night Mode, allowing users to tailor playback for movies, dialogue intelligibility, or late-night viewing.

HDMI-CEC support also allows compatible television remotes to control volume and power functions, simplifying everyday operation.

Subwoofer Integration and Flexible Sound Adjustment

For systems requiring deeper bass, the MODEL M1 includes a dedicated mono RCA subwoofer output. Adjustable high-pass and low-pass filters allow the main speakers and subwoofer to be integrated more effectively, reducing the burden of deep bass reproduction on smaller loudspeakers.

The amplifier also provides bass and treble adjustments, stereo balance control, and selectable stereo or dual-mono operation. These settings offer useful flexibility when matching the MODEL M1 to different speakers, listening rooms, and installation requirements.

Connectivity and Custom Installation

Along with its extensive wireless features, the MODEL M1 provides HDMI eARC, optical digital, and stereo RCA analog inputs. This allows a television, CD player, or other compatible audio component to be incorporated into the same system.

Wired Ethernet and dual-band Wi-Fi provide flexible network connectivity, while a 3.5 mm IR input, IR learning, and compatibility with popular third-party control platforms make the MODEL M1 suitable for custom installations. Its understated black finish, compact dimensions, and simple onboard controls help it fit unobtrusively into almost any living space.

Features

• Designed and manufactured in Shirakawa, Japan
• 100 W per channel into 8 Ω and 125 W per channel into 4 Ω
• High-efficiency, low-distortion class-D amplification
• Digital-direct amplifier architecture with Marantz Musical Digital Filtering (MMDF)
• HEOS Built-in for music streaming and multiroom audio
• Apple AirPlay 2, Bluetooth, and Spotify Connect
• High-resolution PCM playback up to 24-bit/192 kHz and DSD up to 5.6 MHz
• HDMI eARC with Dolby Digital and Dolby Digital Plus decoding
• Optical digital and stereo RCA analog inputs
• Dedicated subwoofer output with adjustable crossover settings
• Selectable stereo and dual-mono operation
• Bass, treble, and balance adjustments
• Virtual, Dialog Enhancer, and Night listening modes
• USB and network music library playback
• Dual-band Wi-Fi and wired Ethernet connectivity
• IR input, IR learning, and third-party control system compatibility
• Compact design suitable for standalone and multi-room installations

Specifications

Type: Wireless streaming stereo integrated amplifier

Amplifier Design: class-D, digital direct

Channels: 2.1

Power Output (8 Ω): 100 W per channel (20 Hz–20 kHz, 0.05% THD)

Power Output (4 Ω): 125 W per channel (1 kHz, 0.05% THD)

Speaker Impedance: 4–16 Ω

Frequency Response (±3 dB): 20 Hz–40 kHz 

Signal-to-Noise Ratio: 105 dB (optical/HDMI); 91 dB (analog line input)

Analog Input Sensitivity/Impedance: 200 mV/20 kΩ

Maximum Analog Input Level: 2.5 V

Digital Inputs: HDMI eARC, optical (TOSLINK)

Analog Inputs: Stereo RCA

Outputs: Mono RCA subwoofer output, stereo speaker binding posts

Supported Audio Formats: FLAC, ALAC, WAV, MP3, AAC, WMA, DSD

PCM Resolution: Up to 24-bit/192 kHz

DSD Support: 2.8 MHz, 5.6 MHz

Surround Audio Decoding: Dolby Digital, Dolby Digital Plus, LPCM

Streaming: HEOS Built-in, Apple AirPlay 2, Bluetooth, Spotify Connect

Bluetooth: Version 4.2, SBC codec

Wireless Networking: Dual-band Wi-Fi (2.4/5 GHz), IEEE 802.11a/b/g/n/ac

Wired Networking: Ethernet

USB Playback: Supported; FAT32 and NTFS storage devices

Channel Modes: Stereo, dual mono

Listening Modes: Stereo, Direct, Virtual, Dialog Enhancer, Night Mode

High-Pass Filter: Adjustable, 40–250 Hz

Low-Pass Filter: Adjustable, 40–120 Hz

Bass/Treble Adjustment: ±5 dB

Balance Adjustment: ±15 dB

Control: HEOS app, HDMI-CEC, IR input, IR learning, TCP/IP third-party control

Power Consumption: 70 W

Dimensions (H × W × D): 3.31" × 8.54" × 9.41" (84 × 217 × 239 mm)

Weight: 4.84 lb.