Marantz AMP 20

The Marantz AMP 20 is a reference-grade 12-channel power amplifier engineered to deliver exceptional performance for high-end immersive home theater systems. Crafted in Shirakawa, Japan, it combines Marantz's exclusive HDAM® circuitry with high-efficiency Class D amplification to provide 200 watts per channel into 8 ohms across all twelve channels. Designed to pair perfectly with the Marantz AV 20 or AV 10 processors, the AMP 20 delivers the power, precision, and musical refinement required for today's most demanding Dolby Atmos®, DTS:X®, and Auro-3D installations.

Offering flexible channel configuration, bridge mode (BTL), and bi-amp capability, the AMP 20 adapts to a wide range of custom home theater layouts. Its copper-plated chassis, premium internal components, intelligent thermal management, and reference-quality construction ensure long-term reliability while preserving the signature Marantz sound. Whether driving a dedicated cinema room or a luxury media space, the AMP 20 provides effortless dynamics, exceptional control, and uncompromising performance.

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The Marantz AMP 20 is engineered to deliver reference-level multichannel amplification for premium home theater systems. Featuring twelve independent amplifier channels rated at 200 watts into 8 ohms, it provides the power reserves needed to drive immersive surround speaker configurations with remarkable clarity, authority, and dynamic headroom. Marantz's exclusive HDAM® circuitry, combined with advanced Class D amplification, delivers exceptional efficiency while maintaining the warm, natural sound signature that has defined the brand for decades.

Installation flexibility is one of the AMP 20's greatest strengths. Each channel supports conventional operation, bi-amplification, or Bridge-Tied Load (BTL) mode, allowing installers to tailor the amplifier for everything from large Dolby Atmos layouts to high-power front-channel applications. In bridged mode, output increases to 400 watts per channel into 8 ohms, making it suitable for even the most demanding loudspeakers.

Professional connectivity includes individually selectable balanced XLR and unbalanced RCA inputs for every channel, premium SPKT-1+ speaker terminals, RS-232 control, trigger connections, IR integration, and Marantz Remote Bus compatibility. The copper-plated chassis, rigid internal construction, and sophisticated thermal management system help minimize interference while ensuring reliable operation during extended listening sessions.

Designed to complement the Marantz AV 20 and AV 10 processors, the AMP 20 delivers the power, flexibility, and sonic refinement required for today's most advanced home theaters. Whether configured for a high-performance Dolby Atmos installation or a custom luxury cinema, it offers outstanding control, effortless dynamics, and the reference-quality performance expected from Marantz's premium amplifier lineup.

  • Component type: Reference 12-channel power amplifier

  • Amplifier technology: High-efficiency Class D amplification with exclusive Marantz HDAM® circuitry

  • Power output: 200 W × 12 into 8 Ω

  • Bridge mode (BTL): Up to 400 W per bridged channel into 8 Ω

  • Bi-amp capability: Supported

  • Number of amplifier channels: 12

  • Inputs: 12 balanced XLR and 12 unbalanced RCA inputs (switch selectable)

  • Speaker terminals: 12 premium Marantz SPKT-1+ binding posts

  • Control connections: RS-232C, 12V trigger input/output, IR flasher input, Marantz Remote Bus

  • Cooling system: Intelligent thermal management with high-efficiency heat dissipation

  • Construction: Copper-plated chassis, premium metal front panel, reference-grade internal layout

  • Additional features: Front-panel level meters, selectable output modes, Auto Power Off, crafted in Shirakawa, Japan