Description
Overview
Marantz, a brand synonymous with uncompromising sound quality and engineering excellence, introduces the AMP 20 — a reference-grade 12-channel power amplifier designed to deliver ultimate performance in high-end home theatre systems.
Crafted in Shirakawa, Japan and meticulously tuned by Marantz Sound Masters, the AMP 20 is built to complement flagship processors like the AV 20. It combines immense power, precision engineering, and audiophile-grade circuitry into a single, elegant chassis — creating a true foundation for reference-level cinematic experiences.
Designed for those who demand both scale and refinement, the AMP 20 transforms any home theatre into a powerful, immersive audio environment.
Key Features
- 12-channel amplification for full surround systems
- 200W per channel (8Ω) high-power output
- Up to 400W per channel (4Ω / BTL mode)
- Custom Class D amplification for efficiency and performance
- Marantz HDAM-SA2 circuitry for superior sound quality
- Balanced XLR & RCA inputs (12 channels)
- Bi-amp and bridge (BTL) modes for flexible configurations
- Copper-plated chassis for reduced noise and interference
- Level meter display on front panel
Reference-Level Multi-Channel Power
At the core of the AMP 20 is a powerful 12-channel amplification system, each channel delivering 200 watts of clean, high-current power.
This allows the amplifier to:
- Drive full Dolby Atmos / DTS:X systems effortlessly
- Maintain consistent power across all speakers
- Deliver dynamic, distortion-free performance
Even the most demanding speaker setups are handled with ease, ensuring every channel performs with equal precision.
Custom Class D Amplification
The AMP 20 utilizes advanced Class D amplification, engineered specifically by Marantz for high efficiency and low distortion.
This design provides:
- High power output with minimal heat
- Improved energy efficiency
- Stable performance during extended use
Unlike traditional designs, this ensures clean, controlled sound even at high volumes, making it ideal for large home theatre environments.
Marantz HDAM Technology
At the heart of its sound performance is Marantz’s proprietary HDAM-SA2 (Hyper Dynamic Amplifier Module) technology.
This replaces conventional op-amps to deliver:
- Faster signal response
- Lower noise levels
- Enhanced detail and clarity
The result is a sound signature that is rich, natural, and highly musical, even in a multi-channel environment.
Flexible System Configuration
The AMP 20 is designed to adapt to a wide range of setups:
Multi-Channel Mode
- Power up to 12 speakers in a surround system
Bi-Amp Mode
- Improve performance of front speakers
BTL (Bridge) Mode
- Combine channels for higher power output (up to 400W)
This flexibility allows users to customize their system based on room size, speaker configuration, and performance needs.
Perfect Pairing with AV 20
The AMP 20 is engineered to work seamlessly with the AV 20 processor, creating a reference-level AV separates system.
Together, they deliver:
- Precise signal processing (AV 20)
- Powerful amplification (AMP 20)
- Fully immersive 3D audio experience
This combination represents one of Marantz’s most advanced home theatre solutions.
High-End Build & Engineering
The AMP 20 features premium construction designed for performance and durability:
- Copper-plated chassis for noise isolation
- Advanced internal shielding
- Rigid structure to reduce vibration
- High-quality speaker terminals (SPKT-1+)
These design elements ensure clean signal transmission and long-term reliability.
Versatile Connectivity & Integration
The AMP 20 offers complete flexibility for integration into high-end systems:
Inputs
- 12 x Balanced XLR inputs
- 12 x RCA inputs (switchable)
Control & Integration
- RS-232 control
- 12V trigger input/output
- IR flasher input
- Marantz remote bus
This makes it ideal for custom installations and smart home integration.
Performance & Specifications
- Channels: 12
- Power Output: 200W/ch (8Ω), 400W (BTL mode)
- Frequency Response: 5Hz – 70kHz
- Signal-to-Noise Ratio: ~110 dB
- Power Consumption: ~400W
This ensures:
- Deep, controlled bass
- Clear midrange
- Smooth, extended highs
- Wide and immersive soundstage
Signature Marantz Sound
Despite its massive power, the AMP 20 retains the signature Marantz sound:
- Warm, natural tonality
- Exceptional clarity and detail
- Smooth, fatigue-free listening
- Cinematic impact with musical refinement
Why Choose Marantz AMP 20
- Reference 12-channel power amplifier
- Massive 200W per channel output
- Flexible system configurations (Bi-amp / BTL)
- Perfect match for AV 20 processor
- Premium build and engineering
- Ideal for luxury home theatre systems
Conclusion
The Marantz AMP 20 is not just a power amplifier — it is the driving force behind a world-class home theatre system.
Combining high power, advanced engineering, and refined sound tuning, it delivers a performance that is both immersive and emotionally engaging.
For those who demand ultimate power, flexibility, and cinematic realism, the AMP 20 stands as a true reference in AV separates.









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