Marantz AMP 20

Marantz AMP 20 – uncompromising 12-channel power amplifier with 200 hi-fi watts and the Marantz signature sound for home theater and music

The Marantz AMP 20 is an extremely powerful 12-channel high-end surround power amplifier, created for the ambitious home theater enthusiast who also refuses to compromise on the music experience. With 200 hi-fi watts per channel, bridge mode capability, and absolutely top-class components, you get sound, power, and finesse at a level normally reserved for reference systems of studio quality. All of it is wrapped in Marantz’s iconic design and fine-tuned by their own experts in Japan.

Highlights

• 12-channel surround power amplifier with 200 watts per channel (8 ohms)
• Bridge mode: up to 1 x 400 watts per channel – perfect for front speakers
• HDAM-SA2 technology and separate toroidal transformer – extremely clean and dynamic sound
• Sound Master tuned and hand-built at Marantz’s factory in Japan
• Perfect match for the Marantz AV 20 surround processor
• Copper-plated and vibration-damped chassis for maximum signal purity
• Balanced XLR and RCA inputs – flexible integration
• Iconic front with VU meter and aluminum panel – design with authority
• Stable and low-noise construction with separate power supplies
• Supports bi-amping, automatic power on/off, and trigger connection

Built to deliver uncompromising power – and world-class sound

With 12 channels and 200 watts per channel into 8 ohms, the AMP 20 can drive even the most demanding speakers without running out of steam – whether you are playing movies, music, or gaming at reference quality. And if you need even more power, you can bridge two channels and achieve a full 400 watts into 8 ohms – ideal for the front speakers in a true high-end home theater.

All components have been carefully selected with one goal: to deliver "The Most Musical Sound," which Marantz is famous for. The AMP 20 is hand-built in Japan and fine-tuned by Marantz’s Sound Master to ensure optimal performance – down to the smallest component. The result is sound that is precise, natural, and emotional.

Reference-quality signal processing – with Marantz’s HDAM technology

At the heart of the AMP 20 is Marantz’s exclusive HDAM-SA2 (Hyper Dynamic Amplifier Modules), which replaces conventional op-amps and delivers significantly lower noise, better dynamics, and much faster response. The technology is integrated into the input/output buffer circuits, where it plays a central role in the amplifier’s superior sound quality.

Thanks to the discrete construction and separated analog/digital sections, the signal path is kept ultra-clean. The dedicated toroidal transformer is low-noise, shielded, and reserved for the HDAM circuit – a luxury solution normally seen only in top-tier audiophile models.

Design and construction, with both muscle and finesse

The AMP 20 is not just powerful; it is also built like a high-end instrument. The heavy, copper-plated chassis with separate stabilization of the transformer and the massive aluminum feet effectively eliminate vibrations and distortion. This contributes to the extremely clean sound and reinforces the overall impression of an uncompromising quality product.

The genuine aluminum front and the beautifully integrated VU meter clearly signal that you are dealing with something very special. The LED lighting behind the front panel creates a discreet and exclusive visual effect that fits perfectly in a dedicated home theater room or a refined hi-fi cabinet.

Flexible integration – ready for your setup

The AMP 20 supports both RCA and balanced XLR connections, which can be selected via a switch on the back. This makes it easy to integrate into any ambitious system, and as the natural partner for the AV 20 surround processor, you get a complete reference setup from one and the same manufacturer, perfectly matched in design, function, and sound.