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MOON LP5.3 Phono Preamplifier                       Updated: May 21, 2009
 



The MOON LP5.3 represents a significant step forward in phono preamplifier design. Particular attention has 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 portrays 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 is its extensive flexibility with respect to end-user adjustments for resisitance and capacitance loading as well as gain. The balanced outputs allows you to take full advantage of connectivity to a balanced preamplifier for a significant improvement in noise floor, dynamics and midrange transparency. Unlike most of the competition, which either uses mass-manufacturing techniques or a circuit mounted in a basic folded metal box, the LP5.3 is housed in a custom-made, sturdy chassis with a 3/8” brushed and anodized front panel.


The MOON PSX5.3 outboard power supply for the LP5.3 has arrived !

Read the details here
 

 

 
Significant Design Features:

· Large isolated power supply on a separate circuit with 2 stages of voltage regulation
· End-user adjustable impedance loading (10, 100, 470, 1K and 47kΩ)
· End-user adjustable capacitance loading (0, 100 and 470pF)
· End-user adjustable gain settings for moving magnet (40dB) and
  moving coil cartridges (54, 60 and 66dB)
· Selectable equalization curves for both the RIAA and the IEC standards
· Optional PSX5.3 external power supply upgrade
· Single-ended RCA and Balanced XLR outputs
· Four-layer PCB tracings with dedicated ground and power planes using pure copper
  for low impedance characteristics. The advantages include better circuit layouts
  resulting in a much shorter signal path and a vastly improved signal-to-noise ratio
· Power supply voltage regulation includes Evolution series i2DCf (Independant
  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.

 

 


   


To view a larger image of the MOON LP5.3 Phono Preamplifier's internal circuitry, simply point-and-click your mouse over the image located to the left.

 



 

To view a larger image of the MOON LP5.3 Phono Preamplifier's rear panel, simply point-and-click your mouse over the image located to the left.

   



 
Overseas MOON RS Series

The RS series of MOON audio components benefit from an even higher standard of manufacturing process than the regular MOON versions. All significant differences are contained within the circuitry and construction of each model.

RS versions are built using different materials and parts in certain areas. For example, printed circuit boards are of a higher temperature grade than that of the military specification FR-4 material we normally use; Their traces are gold-plated instead of a tin/lead composite. As well, all capacitors use improved dielectric materials.

MOON RS models meet and/or exceed stricter manufacturing processes as required to pass many international safety standards such as those imposed by the E-U, Japan and South Korea. Cosmetically, the ONLY difference is the RS logo on the front panel.