The MOON 400M is a differential mono power amplifier that produces 400 watts into 8Ω and 650 Watts into 4Ω. Based on our highly
acclaimed Advanced Renaissance amplifier circuitry, the class A/AB, zero global feedback, DC-coupled 400M is capable of producing tight, deep
and powerful bass with lightning fast speed; True high-performance in a compact package 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.
Our own 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.
400M Photo Gallery
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| Inside view of the 400M |
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| Rear view of the 400M |
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400M Technical 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 · An 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 · Precison matched proprietary MOON Bipolar output transistors with unprecedented gain linearity, resulting in improved bass response and even more accurate sonic reproduction · A high damping factor for superior musical dynamics, improved signal speed and refined timbre accuracy · Fully balanced differential circuitry · "Class A" output to 10 watts for greater efficiency · 12 Volt trigger input/output for remote operations · RS-232 port for (i) full unsolicited bidirectional feedback and (ii) firmware updates · Rigid chassis construction to minimize the effects of external vibrations · Optimized selection of very high quality electronic components · Low operating temperature for an ultra-long life expectancy. |
| 400M Detailed Specifications | |
| 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 |
| Shipping weight | 34 lbs / 15 kgs |
| Dimensions (W x H x D) | 16.9 x 3.5 x 14.0 in. (42.9 x 8.9 x 35.6 cm.) |
| Specifications are subject to change without notice. |