Marantz AMP 20 Multi-Channel Power Amplifier

About The Marantz AMP 20 Multi-Channel Power Amplifier

AMP 20 is a remarkably powerful 12-channel amplifier that's aimed fairly and squarely at discerning home theatre lovers. Its perfect match is the AV 20 and together they form the beating heart of an elite, reference-level home theatre system. AMP 20 is rated at 200 Watts per channel into 8 Ohms and 400 Watts per channel into 4 Ohms, and is built on Marantz exclusive HDAM and high-efficiency low-distortion Class D amplification.

Ultimate Performance: AMP 20’s custom-developed Class D amplification and refined HDAM-SA2 technology create the most incredible theatrical experience possible in your home. It cleverly combines very high-power output and high channel count to create a master reference-level amplifier for ultimate home theatre performance. Separate power supplies for line level and high-power stages ensure total signal purity from input to output.

Sound Master Tuned: The Marantz Sound Master meticulously tuned AMP 20 for amazing performance with careful parts selection to create outstanding sound in your home. Making sound the Marantz way is a seamless fusion of art and science, practiced by creators who balance and select components individually for their sonic qualities—they are the Sound Masters.

Timeless Style: Excellence is heard and seen. AMP 20 is meticulously crafted with authentic materials in a modern style befitting its rich heritage and stunning performance. AMP 20 is elegantly constructed using steel and aluminium casework while the subtle texture moulded into the front panel is lit by the dimmable soft glow of sidelights on either side of the iconic porthole design.

Endlessly Customizable: Comprehensive connectivity options ensure AMP 20 will always deliver the perfect results to suit your home theatre. Marantz has provided a rich assortment of connections and configuration options to make AMP 20 your ideal amplifier. While each of the 12 channels can operate independently, channel pairs can also be switched into bi-amp mode for isolating frequency bands from each other or switched into BTL mode to produce up to 400 Watts per channel into 8 Ohms for your highest output demands.

Effortlessly Powerful: AMP 20 gives you 12 channels of commanding power in a single enclosure each rated at 200 Watts to perform at extraordinarily high levels with no loss in fidelity. Custom Class D amplification is highly efficient, and strategically incorporated whisper-quiet fans keep the unit running optimally even under highly dynamic conditions.

Complete Compatibility: Gold-plated RCA and high-grade XLR connectors accept audio input from most surround processors. Custom Marantz SPKT-1+ binding posts are ergonomic and provide the best possible coupling to loudspeaker cables. Low-distortion, high-power output provides ample drive to virtually any loudspeaker configuration to maximize performance.

Our Review

The Marantz AMP 20 is a solid 12-channel power amplifier designed with home theatre enthusiasts in mind. It pairs naturally with the AV 20, forming a reliable foundation for a high-end cinema setup. Delivering 200 Watts per channel into 8 Ohms (and up to 400 into 4 Ohms), it uses Marantz’s own HDAM tech and efficient Class D amplification to deliver clean, powerful sound. The thoughtful design includes separate power supplies for line and high-power stages, helping keep signal integrity in check, while Sound Master tuning brings a careful balance of components for rich, detailed performance. With its understated styling in steel and aluminium, plus flexible connectivity and configuration options - including bi-amp and BTL modes - it fits comfortably into a wide range of systems. Whether you're running a full surround setup or looking to scale, the AMP 20 delivers dependable muscle with a refined edge.

Main Features & Specifications

• Design: Reference Multi-Channel Power Amplifier for Home Theatres
• Perfect match for the Marantz AV 20 Home Theatre Preamp/Processor
• 12 Channel Power Amplifier
• 200 Watts per channel into 8 Ohms (1k Hz) at 0.05% THD, with 2 channels driven
• 400 Watts per channel into 4 Ohms
• Bi-amp mode drives high and low frequency sections of loudspeakers independently
• BTL Mode (Bridge Mode) combines two channels into a single 400 Watt channel into 8Ω
• Hyper Dynamic Amplifier Module (HDAM® SA2) and current feedback amplification for accuracy and control under high-drive conditions
• Massive Toroidal Power Transformer for high current and low noise
• Selectable auto-standby function

Connections

• Unbalanced Stereo RCA and Balanced Stereo XLR inputs for each channel
• Binding Post Speaker Terminals for each channel
• 3.5mm amp control input for syncing functions with a compatible preamp/processor
• 3.5mm DC trigger input and output
• IR flasher input
• Marantz RCA remote control input and output
• RS-232C port for third-party remote control 

General

• Removable Power Cable: Upgrade to a Premium Power Cable for better performance
• Included Accessories: Quick Start Guide, Mains Power Cable, Amp Control Cable, Remote Control Cable, Speaker Terminal Wrench
• Dimensions (WxHxD): 442 x 191 x 442mm
• Weight: 18.0 kg
• Manufacturer’s Warranty: 5 Years

Note: Features & Specifications Subject To Change Without Notice. E&OE.