{"product_id":"marantz-model-m4-amplifier","title":"Marantz MODEL M4 Amplifier","description":"\u003ch1\u003eMarantz MODEL M4 Four-Zone Distribution Amplifier\u003c\/h1\u003e\u003ch3\u003eEight channels of 100 W class-D amplification with four independent HEOS zones, high-resolution audio, and bridgeable outputs\u003c\/h3\u003e\u003cp\u003eThe Marantz MODEL M4 combines eight channels of powerful amplification, high-resolution digital audio streaming, and extensive connectivity in a rack-mountable component that can serve as the heart of a complete multiroom music system. Delivering 100 W per channel into 8 Ω and 125 W per channel into 4 Ω, the MODEL M4 offers the power to drive loudspeakers across four independent stereo zones. Bridge mode provides up to 200 W per channel across four channels when additional power is required.\u003c\/p\u003e\u003cp\u003eDesigned and manufactured in Shirakawa, Japan, the MODEL M4 brings Marantz's decades of audio engineering experience to a modern, streamlined distribution system. With four independent HEOS modules, Apple AirPlay 2, Spotify Connect, and optical digital inputs, it can handle everything from high-resolution music streaming to television sound across multiple rooms without the need for separate amplifiers and streaming components.\u003c\/p\u003e\u003ch4\u003eHigh-Power Amplification for Four Zones\u003c\/h4\u003e\u003cp\u003eAt the heart of the MODEL M4 are eight channels of high-efficiency class-D amplification 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 a wide range of custom-installed speaker systems.\u003c\/p\u003e\u003cp\u003eFor installations requiring additional power, bridge mode allows the MODEL M4 to deliver up to 200 W per channel into 4 Ω across four channels. This flexibility makes it possible to configure the amplifier for four stereo zones or fewer zones with greater available power.\u003c\/p\u003e\u003cp\u003eMarantz 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.\u003c\/p\u003e\u003ch4\u003eHigh-Resolution Music Streaming With HEOS\u003c\/h4\u003e\u003cp\u003eWith HEOS Built-in, the MODEL M4 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.\u003c\/p\u003e\u003cp\u003eFor listeners with their own digital music libraries, the MODEL M4 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. Four USB-A ports provide convenient access to locally stored music.\u003c\/p\u003e\u003cp\u003eApple AirPlay 2 makes it easy to stream directly from an iPhone, iPad, or Mac, while Spotify Connect offers direct control of Spotify playback from the Spotify app.\u003c\/p\u003e\u003ch4\u003eMultiroom Audio Made Simple\u003c\/h4\u003e\u003cp\u003eThe MODEL M4 is designed specifically for multiroom audio systems. Its four independent HEOS modules allow listeners to play different music in four rooms or synchronize playback across multiple listening areas. Each zone can be controlled independently through the HEOS app, including source selection and volume adjustment.\u003c\/p\u003e\u003cp\u003eThe MODEL M4 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.\u003c\/p\u003e\u003cp\u003eIts rack-mountable design makes the MODEL M4 particularly well suited to whole-home audio installations where multiple amplifiers and source components would otherwise be required. Multiple units can be used to build a flexible distribution system with independent control of each listening zone.\u003c\/p\u003e\u003ch4\u003eTV Sound Throughout the Home\u003c\/h4\u003e\u003cp\u003eThe MODEL M4 can also distribute television audio to conventional loudspeakers throughout the home. Its two optical digital inputs allow audio from compatible televisions and other digital sources to be incorporated into the system without requiring a separate AV receiver in each room.\u003c\/p\u003e\u003cp\u003eBuilt-in Dolby Digital decoding enables the amplifier to handle compatible 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.\u003c\/p\u003e\u003cp\u003eWith TV Sound Grouping, television audio can be distributed to multiple HEOS zones, allowing listeners to enjoy the same program in different rooms.\u003c\/p\u003e\u003ch4\u003eSubwoofer Integration and Flexible Sound Adjustment\u003c\/h4\u003e\u003cp\u003eFor systems requiring deeper bass, the MODEL M4 includes four configurable RCA outputs that can function as stereo preamplifier outputs or mono subwoofer outputs, with one subwoofer output available per zone. Adjustable high-pass and low-pass filters allow the main speakers and subwoofers to be integrated more effectively, reducing the burden of deep bass reproduction on smaller loudspeakers.\u003c\/p\u003e\u003cp\u003eThe 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 M4 to different speakers, listening rooms, and installation requirements.\u003c\/p\u003e\u003ch4\u003eConnectivity and Custom Installation\u003c\/h4\u003e\u003cp\u003eAlong with its extensive streaming features, the MODEL M4 provides two optical digital inputs and four stereo RCA analog inputs. This allows televisions, CD players, and other compatible audio components to be incorporated into the same system.\u003c\/p\u003e\u003cp\u003eDual Ethernet connections provide wired network connectivity, while four 12 V trigger outputs and compatibility with popular third-party control platforms make the MODEL M4 particularly suitable for custom installations. The amplifier supports control systems from Crestron, Control4, and AMX through TCP\/IP integration.\u003c\/p\u003e\u003cp\u003eThe rack-mountable chassis includes active cooling and comes with a rack installation kit. Its understated black finish, robust construction, and straightforward onboard controls allow it to integrate neatly into a dedicated equipment rack or centralized home audio system.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDesigned and manufactured in Shirakawa, Japan\u003c\/li\u003e\n\u003cli\u003eEight channels delivering 100 W per channel into 8 Ω and 125 W per channel into 4 Ω\u003c\/li\u003e\n\u003cli\u003eFour independent stereo zones with dedicated HEOS modules\u003c\/li\u003e\n\u003cli\u003eBridge mode providing up to four channels of 200 W into 4 Ω\u003c\/li\u003e\n\u003cli\u003eHigh-efficiency, low-distortion class-D amplification\u003c\/li\u003e\n\u003cli\u003eDigital-direct amplifier architecture with Marantz Musical Digital Filtering (MMDF)\u003c\/li\u003e\n\u003cli\u003eHEOS Built-in for music streaming and multiroom audio\u003c\/li\u003e\n\u003cli\u003eApple AirPlay 2 and Spotify Connect\u003c\/li\u003e\n\u003cli\u003eHigh-resolution PCM playback up to 24-bit\/192 kHz and DSD up to 5.6 MHz\u003c\/li\u003e\n\u003cli\u003eTwo optical digital inputs with Dolby Digital decoding\u003c\/li\u003e\n\u003cli\u003eFour stereo RCA analog inputs\u003c\/li\u003e\n\u003cli\u003eFour configurable stereo preamplifier or mono subwoofer outputs\u003c\/li\u003e\n\u003cli\u003eAdjustable high-pass and low-pass crossover settings\u003c\/li\u003e\n\u003cli\u003eSelectable stereo and dual-mono operation\u003c\/li\u003e\n\u003cli\u003eBass, treble, and balance adjustments\u003c\/li\u003e\n\u003cli\u003eVirtual, Dialog Enhancer, and Night listening modes\u003c\/li\u003e\n\u003cli\u003eTV Sound Grouping for multiroom television audio distribution\u003c\/li\u003e\n\u003cli\u003eFour USB-A ports for local music library playback\u003c\/li\u003e\n\u003cli\u003eDual Ethernet connections for wired networking\u003c\/li\u003e\n\u003cli\u003eFour 12 V trigger outputs\u003c\/li\u003e\n\u003cli\u003eTCP\/IP compatibility with Crestron, Control4, and AMX systems\u003c\/li\u003e\n\u003cli\u003eRack-mountable chassis with active cooling and included rack installation kit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cp\u003e\u003cb\u003eType:\u003c\/b\u003e Four-zone streaming distribution amplifier\u003c\/p\u003e\u003cp\u003e\u003cb\u003eAmplifier Design:\u003c\/b\u003e class-D, digital direct\u003c\/p\u003e\u003cp\u003e\u003cb\u003eChannels:\u003c\/b\u003e 8 (four stereo zones)\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePower Output (8 Ω):\u003c\/b\u003e 100 W per channel (20 Hz–20 kHz, 0.05% THD)\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePower Output (4 Ω):\u003c\/b\u003e 125 W per channel (1 kHz, 0.1% THD)\u003c\/p\u003e\u003cp\u003e\u003cb\u003eBridged Power Output (4 Ω):\u003c\/b\u003e 200 W per channel (four channels, 1 kHz, 0.05% THD)\u003c\/p\u003e\u003cp\u003e\u003cb\u003eSpeaker Impedance:\u003c\/b\u003e 4–16 Ω\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFrequency Response (±3 dB):\u003c\/b\u003e 20 Hz–40 kHz\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFrequency Response (±1 dB):\u003c\/b\u003e 20 Hz–20 kHz\u003c\/p\u003e\u003cp\u003e\u003cb\u003eSignal-to-Noise Ratio:\u003c\/b\u003e 103 dB (optical); 100 dB (analog line input)\u003c\/p\u003e\u003cp\u003e\u003cb\u003eAnalog Input Sensitivity\/Impedance:\u003c\/b\u003e 200 mV\/20 kΩ\u003c\/p\u003e\u003cp\u003e\u003cb\u003eMaximum Analog Input Level:\u003c\/b\u003e 2.5 V\u003c\/p\u003e\u003cp\u003e\u003cb\u003eDigital Inputs:\u003c\/b\u003e 2 optical (TOSLINK)\u003c\/p\u003e\u003cp\u003e\u003cb\u003eAnalog Inputs:\u003c\/b\u003e 4 stereo RCA\u003c\/p\u003e\u003cp\u003e\u003cb\u003eOutputs:\u003c\/b\u003e 4 configurable stereo RCA preamplifier or mono subwoofer outputs; 8 speaker channels via binding posts\u003c\/p\u003e\u003cp\u003e\u003cb\u003eSupported Audio Formats:\u003c\/b\u003e FLAC, ALAC, WAV, MP3, AAC, WMA, DSD\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePCM Resolution:\u003c\/b\u003e Up to 24-bit\/192 kHz\u003c\/p\u003e\u003cp\u003e\u003cb\u003eDSD Support:\u003c\/b\u003e 2.8 MHz, 5.6 MHz\u003c\/p\u003e\u003cp\u003e\u003cb\u003eSurround Audio Decoding:\u003c\/b\u003e Dolby Digital, LPCM\u003c\/p\u003e\u003cp\u003e\u003cb\u003eStreaming:\u003c\/b\u003e HEOS Built-in (four independent modules), Apple AirPlay 2, Spotify Connect\u003c\/p\u003e\u003cp\u003e\u003cb\u003eWireless Networking:\u003c\/b\u003e Not supported\u003c\/p\u003e\u003cp\u003e\u003cb\u003eWired Networking:\u003c\/b\u003e 2 Ethernet connections\u003c\/p\u003e\u003cp\u003e\u003cb\u003eUSB Playback:\u003c\/b\u003e 4 USB-A ports; FAT32 and NTFS storage devices\u003c\/p\u003e\u003cp\u003e\u003cb\u003eChannel Modes:\u003c\/b\u003e Stereo, dual mono, bridge mode\u003c\/p\u003e\u003cp\u003e\u003cb\u003eListening Modes:\u003c\/b\u003e Stereo, Direct, Virtual, Dialog Enhancer, Night Mode\u003c\/p\u003e\u003cp\u003e\u003cb\u003eHigh-Pass Filter:\u003c\/b\u003e Adjustable, 40–250 Hz\u003c\/p\u003e\u003cp\u003e\u003cb\u003eLow-Pass Filter:\u003c\/b\u003e Adjustable, 40–120 Hz\u003c\/p\u003e\u003cp\u003e\u003cb\u003eBass\/Treble Adjustment:\u003c\/b\u003e ±5 dB\u003c\/p\u003e\u003cp\u003e\u003cb\u003eBalance Adjustment:\u003c\/b\u003e ±15 dB\u003c\/p\u003e\u003cp\u003e\u003cb\u003eVolume Limit:\u003c\/b\u003e Adjustable, 80–100%\u003c\/p\u003e\u003cp\u003e\u003cb\u003eControl:\u003c\/b\u003e HEOS app, TCP\/IP third-party control (Crestron, Control4, AMX)\u003c\/p\u003e\u003cp\u003e\u003cb\u003eTrigger Outputs:\u003c\/b\u003e 4 (12 V DC)\u003c\/p\u003e\u003cp\u003e\u003cb\u003eCooling:\u003c\/b\u003e Active cooling\u003c\/p\u003e\u003cp\u003e\u003cb\u003eRack Mounting:\u003c\/b\u003e Supported; rack installation kit included\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePower Supply:\u003c\/b\u003e AC 100–240 V, 50\/60 Hz\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePower Consumption:\u003c\/b\u003e 265 W\u003c\/p\u003e\u003cp\u003e\u003cb\u003eStandby Power Consumption:\u003c\/b\u003e 22 W (Quick Start); 0.5 W (Deep Standby)\u003c\/p\u003e\u003cp\u003e\u003cb\u003eDimensions (H × W × D):\u003c\/b\u003e 4.17\" × 17.4\" × 16.34\" (106 × 442 × 415 mm)\u003c\/p\u003e\u003cp\u003e\u003cb\u003eWeight:\u003c\/b\u003e 17.64 lb. (without rack brackets); 18.06 lb. (with rack brackets)\u003c\/p\u003e","brand":"mysite","offers":[{"title":"Default Title","offer_id":67878315655245,"sku":"MODELM4","price":495.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/2523\/7837\/files\/modelm4_image_2_nacopy.jpg?v=1793591146","url":"https:\/\/woodlane.store\/products\/marantz-model-m4-amplifier","provider":"WoodLane","version":"1.0","type":"link"}