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MOON W-3 Stereo Amplifier                           Updated: January 27, 2007


  MOON W-3 Stereo Amplifier

Also available with silver faceplate      

 



The MOON W-3 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 MOON W-3 possesses the same sonic signature as the larger and more powerful W-5 but at a more affordable price.

 



  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.

 

  MOON W-3 Inside View
MOON W-3 inside view
  MOON W-3 Rear View
MOON W-3 rear view
 



  Specifications:

 
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
 
 
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.