Description
Marantz AMP 20 12 Channel Power Amplifier
Reference Level Power for Serious Home Cinema Systems
The Marantz AMP 20 is a high performance 12 channel power amplifier designed for large scale home cinema and immersive audio systems. It delivers clean, confident power with the control and stability required to drive complex speaker layouts without strain.
Built to partner with high quality AV processors, the AMP 20 focuses on consistency and headroom rather than inflated numbers. The result is a sound that feels effortless, dynamic and composed, even at demanding listening levels.
Clean, Confident Multi Channel Performance
With twelve discrete amplification channels, the AMP 20 is capable of powering advanced surround systems including Dolby Atmos and large immersive layouts. Each channel is engineered to deliver stable output, helping speakers maintain clarity, control and impact during both quiet passages and high energy scenes.
Marantz Class D amplification combined with HDAM SA2 circuitry provides fast transient response, low noise and excellent efficiency. This allows the amplifier to deliver serious power without excessive heat or fan noise.
Flexible System Integration
The AMP 20 integrates cleanly into a wide range of systems. Balanced XLR and unbalanced RCA inputs allow connection to AV processors, preamplifiers and control systems. Channels can be configured in standard, bi amp or bridged modes to suit specific speaker requirements.
Trigger and control connections support automation and custom installation environments.
Specifications
| Specification | Details |
|---|---|
| Amplifier Type | Class D with HDAM SA2 circuitry |
| Number of Channels | 12 |
| Power Output 8 Ohms | 200 watts per channel, two channels driven |
| Power Output 4 Ohms | Up to 400 watts per channel, two channels driven |
| Inputs | Balanced XLR and unbalanced RCA |
| Speaker Outputs | 12 pairs of binding posts |
| Channel Configuration | Standard, bi amp, bridge modes |
| Control Connections | RS232, IR input, DC trigger in and out |
| Power Consumption | Approx. 400 watts at full load |
| Standby Power | Approx. 0.2 watts |
| Dimensions | Approx. 442 x 442 x 191 mm |
| Weight | Approx. 18 kg |
| Finish | Black |
| Included Accessories | Power cable, control cables, speaker terminal tool |
Nerdy Technical Specifications
For the curious and the serious
View full technical specifications
Amplification and Performance
- Class D amplification topology
- Marantz HDAM SA2 discrete circuitry
- 200 watts per channel into 8 ohms at 1 kHz with two channels driven
- 400 watts per channel into 4 ohms at 1 kHz with two channels driven
- Bridge mode output of 400 watts into 8 ohms
- Frequency response from 5 Hz to 70 kHz
- Signal to noise ratio of approximately 110 dB
- Low total harmonic distortion across rated output range
Inputs and Outputs
- 12 balanced XLR inputs
- 12 unbalanced RCA inputs
- Input sensitivity of 2.8 V for XLR
- Input sensitivity of 1.4 V for RCA
- Input impedance of 100 kOhm for XLR
- Input impedance of 47 kOhm for RCA
- 12 pairs of high current speaker binding posts
Channel Modes
- Standard multi channel operation
- Bi amp mode for compatible speakers
- Bridge mode for higher output per channel pair
Control and Integration
- RS232 control for automation systems
- IR flasher input
- DC trigger input
- DC trigger output
- Auto power on and standby functionality
Electrical and Power
- Maximum power consumption of approximately 400 watts
- Power consumption with no signal of approximately 110 watts
- Standby power consumption of approximately 0.2 watts
- Operating temperature range from 5 degrees C to 35 degrees C
Physical Construction
- Rigid metal chassis with internal shielding
- Designed for low vibration and thermal stability
- Dimensions including feet of approximately 442 x 442 x 191 mm
- Weight of approximately 18 kg
Supplied Accessories
- Power cable
- Control and trigger cables
- Speaker terminal wrench
The Audio Experts Take
The Marantz AMP 20 is built for customers who want their home cinema system to feel effortless. It delivers real power across all twelve channels without strain, allowing speakers to sound more open, controlled and dynamic.
For larger rooms or serious immersive audio systems, this amplifier provides a stable, reliable foundation that lets the rest of the system perform at its best.
📦 Brand new
🛡 Full Australian warranty
📍 Available in store and online at The Audio Experts
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