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MOON CLASSIC SERIES
                 
               
Updated: January 27, 2007
W-3 Stereo Power Amplifier
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Also available with silver faceplate      
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This balanced differential stereo power amplifier produces 120 watts per channel into 8 ohms,
240 watts into 4 ohms and can be configured for mono operation. Employing our "Advanced Renaissance"
technology featuring a "no overall feedback" circuit and bipolar output devices, the W-3 produces
a warm, grain free sound common to some of the very best tube amplifiers, but has the reliability of
solid state designs. The W-3 possesses the same sonic signature as the larger and more powerful
W-5 but at a more affordable price.
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Significant Design Features
A "no overall feedback" design resulting in 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 ·
A custom proprietary toroidal transformer design with lower magnetic, electrical and thermal loss,
yielding an improved power transfer and lower regulation factor, resulting in increased current
speed and better dynamics ·
Fully balanced circuitry up to the output stage ·
Stable to any known speaker impedance ·
"Class A" output to 5 watts for greater efficiency ·
Precision matched Bipolar output devices which offer superb linearity throughout the entire audio
frequency spectrum ·
A high damping factor which yields superior musical dynamics, improved signal speed and refined
timbre accuracy ·
Extremely rigid chassis   construction to minimize the effects of external vibrations ·
Accurate matching of the very finest high quality electronic components ·
A very short signal path for a faster transient response ·
A symmetrical circuit design ·
An optional 12 Volt trigger for remote operations ·
Pure copper circuit board tracings with extremely low impedance characteristics ·
Designed to be powered up at all times for optimal performance ·
Low operating temperature for a longer than normal life expectancy.
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MOON W-3 inside view
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MOON W-3 rear view
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Specifications:
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| Type |
Solid State |
| Configuration |
Stereo |
| Power Supply Transformer |
1.1kVA |
| Power Supply Capacitance |
108,000µF |
| Class Of Operation |
A/AB |
| Single-ended Inputs |
RCA - 2 pairs   (normal & phase inverted) |
| Balanced Inputs |
XLR - 1 pair |
| Input Device Type |
J-FETs |
| Input Impedance |
47,500 ohms |
| Input Sensitivity |
900mV RMS |
| Output Device Type |
Bipolars - 8 per channel |
| Output Binding Posts |
WBT |
| Output Power @ 8 ohms |
120 Watts |
| Output Power @ 4 ohms |
240 Watts |
| Output Power @ 2 ohms |
400 Watts |
| Output Power - Bridged Mono |
400 Watts |
| Frequency Response |
10Hz - 125kHz   +0/-3dB |
| Output Impedance |
0.01 ohms |
| Damping Factor   (static) |
800 |
| Gain |
31dB |
| Dynamic Headroom |
6dB |
| Signal-to-noise Ratio |
100dB @ full power |
| Maximum Output Voltage |
32 Volts |
| Slew Rate |
35V/µs |
| Maximum Current - Peak |
36 amperes |
| Maximum Current - Continuous |
18 amperes |
| Crosstalk @ 1kHz |
-90dB |
| IMD |
Unmeasureable |
| THD   (20Hz - 20kHz @ 1 watt) |
< 0.02 % |
| THD   (20Hz - 20kHz @ 120 watts) |
< 0.05 % |
OPTIONAL
12 Volt Trigger Operation
 
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Direct Logic   (0V = off, 12V=on)   using a
1/8" mini-jack with an input impedance of
2K ohms and current requirement of 6mA |
| Available Faceplate Finishes |
Black and Silver |
| Power Consumption @ idle |
40 Watts |
| AC Power Requirements |
120V / 60Hz     240V / 50Hz |
| Fuse Replacement - 120V |
6A long fast blow |
| Fuse Replacement - 230V |
3A long fast blow |
| Warranty   (USA & Canada) |
10 years |
| Shipping weight |
48 lbs / 21 Kgs |
| Dimensions   (W x H x D) |
19 x 7.5 x 14 in.   (49 x 19 x 36 cm.) |
       
Specifications are subject to change without notice.
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