Preamplifier

P-8Preamplifier

The preamplifier that changed it all. The best preamplifier on paper, in measurements and in the listening room.

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Lauched in 2005, discontinued in 2012

Using several proprietary technologies, this preamplifier yields absolutely no sonic colorations, a level of transparency second-to-none, and possesses a signal-to-noise ratio that would have been considered unattainable until its creation. For soundstage depth, precision and musicality, the P-8 has redefined the rules.

User manual Product details

Technical aspects


2-chassis design with one chassis housing the power supply, digital controller circuitry and software processing. The other chassis contains the audio circuitry
A dual-mono oversized power supply using 2 toroidal transformers in conjunction with 6 stages of DC voltage regulation and extensive choke filtering
M-Ray volume control based on the R-2R resistor array configuration using metal film surface mount resistors with 0.1% tolerances, resulting in no sonic degradation of the audio signal, regardless of the selected volume setting
Fully differential, no global feedback circuit topology, using absolutely no capacitors anywhere in the audio signal path
 Power supply voltage regulation includes 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; 40 stages in all
 530 individual volume steps in 1dB and 0.5dB increments
 M-Lock for "user selectable" maximum volume setting lock-out for each line input
 "Gain offset" for each individual line input with a ±10dB range
 Each line input is fully configurable to be "home-theater ready", where the gain section of the P-8
  is bypassed
 RS-232 port for (i) full unsolicited bidirectional feedback and (ii) firmware updates
 IR input for external control
 12 Volt trigger output for remote operation
SimLink™ controller port for 2-way communications with other compatible MOON components
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
Ultra rigid chassis construction to minimize the effects of external vibrations
Accurate matching of the very finest quality electronic components in a symmetrical circuit design
Includes FRM-2 remote control.

Magazine reviews


MAGAZINE REVIEWER DATE / ISSUE
 The Absolute Sound  (USA)  Paul Seydor    Issue #165 - October 2006
 Alta Fidelidad   (Spain)    Miguel Riera  Issue #198 - January 2008
 Audio Magazine   (Russia)    Staff  # 6 (65)   June 2005
 Audiophile   (Hong Kong)    Charlie Ma  June 2006
 Fedelta del Suonu   (Italy)    Ricardo Mozzi  November 2006   #132
 Haute Fidelite   (France)  Laurent Thorin  November 2005   #105
 The Inner Ear Report   (Canada)   Ernie Fisher    2007 - Vol. 17 #3
 Stereophile   (USA)   John Atkinson  September 2009 
 Stereophile   (USA)   Kalman Rubinson  November 2006  
 SoundStage! UltraAudio   (www)    Jeff Fritz  April 2006  
 u-audio  (Taiwan)  Staff  January 2013
 UHF Magazine  (Canada)  Gerard Rejskind  Vol. 77 - 2006  
 yam - hifihivi  (www)  (Taiwan)  Lin Jialiang  December 2011   RS Version