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Simaudio Moon Neo 400M

Mono Power Amplifier (Single)

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Simaudio Moon Neo 400M Details

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MOON Neo 400M Mono Power Amplifier: Massive power and performance

The MOON Neo 400M is a differential mono power amplifier that produces 400 watts into ohms and 650 watts into ohms. Based on Simaudio’s highly acclaimed Advanced Renaissanceamplifier circuitry, the zero global feedback, DC-coupled 400M is capable of producing tight, deep and powerful bass with lightning fast speed. It’s a rarity in the high-end audio world: a compact component that provides performance without compromise.

Possessing a high damping factor, an incredibly low noise floor, excellent dynamic range and a transparent, lifelike soundstage, the MOON 400M will effortlessly drive any loudspeaker. Even difficult loads will not impede its ability to remain exceedingly musical and accurate.

MOON’s unique heat-sink geometry allows for ultra-effective and efficient cooling. The amplifier’s oversized power supply contains a large proprietary toroidal transformer and substantial energy storage. Finally, with both balanced (XLR) and single-ended (RCA) inputs, the MOON 400M represents the ultimate choice for performance and affordability.

Key features you'd expect in a MOON Neo Series product are present, such as 12V triggers and an RS-232 port for custom-install environments. Finally, the Neo 400M is available in three different finishes: the standard "all black", as well as special order "all silver" or "two-tone" (black and silver).

Significant design features

  • A "no overall feedback" design resulting in genuine real-time amplification, a more accurate musical reproduction with respect to tonality, virtually non-existent intermodulation distortion and the elimination of common phase errors resulting from feedback
  • Oversized power supply
  • Custom proprietary toroidal transformer design with lower magnetic, electrical and thermal loss, yielding an improved power transfer and lower regulation factor. The result is increased current speed and better dynamics
  • Fully balanced differential circuitry
  • Class A output to 10 watts for greater efficiency
  • Precision matched proprietary MOON Bipolar output transistors with unprecedented gain linearity for improved bass response and even more accurate sonic reproduction resulting in improved bass response and even more accurate sonic reproduction
  • A high damping factor yielding superior musical dynamics, improved signal speed and refined timbre accuracy
  • 12 Volt Trigger input and output
  • RS-232 port for i) full unsolicited bidirectional feedback in custom installation setups and ii) firmware updates
  • Extremely rigid chassis construction to minimize the effects of external vibrations
  • Accurate matching of the very finest high quality electronic components in a symmetrical circuit design
  • Optimized selection of very high quality electronic components
  • Low operating temperature to ensure a longer than normal life expectancy

Additional Information

Name Simaudio Moon Neo 400M
Sub Title Mono Power Amplifier (Single)
Manufacturer Moon
Manufacturer Part# M400BLACK

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Type: Solid State
Configuration: Mono - Differential
Power Supply Transformers: 400VA
Power Supply Capacitance: 85,000µF
Class Of Operation: A/AB
Balanced Inputs: XLR - 1
Single-ended Inputs: RCA - 1
Input Device Type: J-FETs
Input Impedance: 47.5KΩ
Input Sensitivity: 800mV RMS
Output Device Type: Bipolars - 8
Output Binding Posts: 1 pair - 5-way, Gold-plated, Shielded
Output Power @ 8Ω: 400 Watts
Output Power @ 4Ω: 650 Watts
Frequency Response: 10Hz - 125kHz (+0/-3dB)
Output Impedance: < 0.01Ω
Damping Factor (static): > 800
Gain: 36dB
Signal-to-noise Ratio: 106dB @ full power
Maximum Output Voltage: 60 Volts
Slew Rate: 60 V/µs
Maximum Current – Peak: 56 amperes
Maximum Current – Continuous: 26 amperes
IMD: Unmeasureable
THD (20Hz - 20kHz @ 1 watt): 0.02%
THD (20Hz - 20kHz @ 400 watts): 0.05%
12 Volt Trigger Input/Output Operation: Direct Logic (0V = off, 12V=on) using a 3.5mm
Mono jack with an output impedance of 1000Ω and current requirement of 12mA
RS-232 Port: 9-pin female DB connector
Power Consumption @ idle: 36 Watts
AC Power Requirements: 120V / 60Hz 220-240V / 50Hz
Fuse Replacement: 120V / 220-240V 8.0A long fast blow / 4.0 long fast blow Dimensions (W x H x D in inches): 16.9 x 3.5 x 14.0
Shipping weight: 34 lbs.