Power Amplifier

W5.3Power Amplifier

The followup to the immensely successful MOON W-5.

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Launched in 2007, Discontinued in 2011

The MOON W5.3 Differential power amplifier produced 150 watts per channel into 8 ohms, 300 watts into 4 ohms and could be configured for mono operation. Employing our world-renowned "Advanced Renaisance" amplification circuit, the W5.3 produces a warm, grain free sound common to some of the very best tube amplifiers, but has the reliability of solid state designs.

The SE version produces 175 watts into 8 ohms, 350 watts in to 4 ohms and 700 watts in bridged mono configuration. It also uses MOON Bipolar output transistors with unprecedented gain linearity resulting in improved bass response and even more accurate sonic reproduction. Also unique to the SE version are tighter matching and tolerances for certain critical electronic parts.

Product details

Technical aspects

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 and fully decoupled 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 highest quality electronic components to tolerances as low as 0.01%
A very short signal path for a faster transient response
A symmetrical circuit design
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.

Magazine reviews

 Audiophile   (Hong Kong)  Staff  January 2009   RS version
 Haute Fidelité   (France)  Laurent Thorin  May 2007
 Québec Audio/Video   (Canada)  Francois Gagné  April/May 2007   Vol. 14 no. 2
 SoundStage!   (www)  Dan Davis  October 2007   (www)