Phono Preamplifier

LP5.3Phono Preamplifier

The first of a new generation of MOON phono preamplifiers.

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Launched in 2006, Discontinued in 2010

The MOON LP5.3 represented a significant step forward in phono preamplifier design. Particular attention was been paid to noise levels and dynamic range, making the LP5.3 one of the quietest phono preamplifiers ever, on par and even superior to many models at significantly higher price points. Sonically, it portrayed all the Simaudio hallmarks: clean, powerful, fast and extended bass combined with an open midrange and airy extended high frequencies. One of the strengths of the MOON LP5.3 was its extensive flexibility with respect to end-user adjustments for resistance and capacitance loading as well as gain. The balanced outputs allowed you to take full advantage of connectivity to a balanced preamplifier for a significant improvement in noise floor, dynamics and midrange transparency. The LP5.3 was housed in a custom-made, sturdy chassis with a 3/8” brushed and anodized front panel.

User manual

Technical aspects

Large powser supply on a separate circuit with 2 stages of voltage regulation
End-user adjustable impedance loading (10, 100, 470, 1K and 47K ohms)
End-user adjustable capacitance loading (0,100 and 470pF)
End-user adjustable gain for moving magnet (40dB) & moving coil cartridges (60dB)
End-user adjustable equalization curve (RIAA or IEC)
Optional PSX5.3 external power supply
Single-ended RCA and Balanced XLR outputs
4-Layer printed circuit boards with pure copper tracings for a much shorter signal path; This results in greater sonic accuracy and a dramatically improved signal-to-noise ratio
Power supply voltage regulation includes Evolution series i2DCf (Independent Inductive DC
Filtering); There is one inductor dedicated to each integrated circuit type component (DAC,
Op-Amp, etc.) in the audio circuit’s signal path - 2 stages in all
Extremely short signal path for a faster transient response
Accurate matching of the finest high quality electronic components.

Magazine reviews

 The Absolute Sound   (USA)  Wayne Garcia  Issue #180 - March 2008
 Audiofil   (Croatia)  Milan Rupic  August 2008   (www)
 Australian hi-fi  Philip Bell  January/February 2007
 Hi-Fi News   (United Kingdom)  Steve Harris  April 2010
 HiFi Review   (Hong Kong)  Staff  January 2010   #283
 Son & Image   (Canada)  Michel Leroux  July/August 2008   Vol. 9 no. 6
 SoundStage!   (www)  Graham Abbott  July 2009   (www) - Follow-Up
 SoundStage!   (www)  Ken Choi  June 2007   (www)
 Stereophile   (USA)  John Atkinson  October 2007 - Follow-Up
 Stereophile   (USA)  Michael Fremer  March 2007   (www)
 stereoplay   (Germany)  Dalibor Beric  June 2009
 TONEAudio Magazine   (www)  Jeff Dorgay  November 2009 #24 - Follow-Up
 TONEAudio Magazine   (www)  Marc Phillips  August 2007 #11
 UHF Magazine   (Canada)  Gerard Rejskind  Vol. 83 - 2008