Moon 610LP Dual Mono Fully Balanced Phono Pre-Amplifier


Moon 610LP Dual Mono Fully Balanced Phono Pre-Amplifier



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Since one of our strengths at Simaudio is “Research & Development”, we have the ability to create a reference grade product and then, a short time later, offer a more accessible model which encapsulates most of the technology and performance of the reference.

The 610LP combines customised parts in an ultra-refined audio circuit which is fed by a unique power supply. This oversized power supply, located within the main chassis, is housed in a satin coated, steel isolated enclosure which eliminates all traces of AC artifacts. Located within this enclosure is a high quality toroidal transformer, a ‘pi-type’ filter to reduce AC transmission noise and multiple stages of voltage regulation. These factors result in a power supply that exceeds the performance of a battery power supply with respect to both audio signal-to-noise ratio and voltage regulation.

A highly configurable phono preamplifier, the MOON 610LP offers selectable gain, impedance loading, capacitance loading and equalisation curves, all accomplished using DIP switches found on the bottom panel. These switches are located directly in line with the circuit at optimal locations to yield the shortest possible signal path. These adjustments, in conjunction with an excellent overload margin, allow the 610LP to work with virtually any available phono cartridge.

Significant Design Features

• Power supply voltage regulation includes i 2 DCf (Independent Inductive DC Filtering); 1 inductor for each and every IC in the audio circuit’s signal path – 24 stages in all.

• 64 impedance loading settings from 12.1Ω to 47kΩ.

• 16 capacitance loading settings from 0pF to 1120pF. • 16 gain level settings from 40dB to 70dB. • Selectable equalization curves for RIAA and IEC standards.

• Fully compatible with 820S external power supply.

• Customised parts include metallised polypropylene film capacitors with very tight tolerances of 1%.

610LP Technical Features

  • An oversized power supply producing a DC signal with a noise floor of -140dB related to 1.0V, DC-100kHz
  • 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; 24 stages in all
  • Selectable equalisation curves for both the RIAA and the IEC standards
  • Customized parts include metallized polypropylene film capacitors with very tight tolerances of 1%
  • 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 featuring a “pi-type” filter comprised of 40,000uF of capacitance and dual choke inductance
  • 12 Volt trigger input and output for remote operation
  • 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


Inputs (XLR / RCA) 1 pair / 1 pair

S/N Ratio (full scale @40dB gain) 112dBr

S/N Ratio (full scale @70dB gain) 93dBr IEC Curve Effect -7dB @ 10Hz

Frequency response 20Hz – 20kHz ±0.1dB

Crosstalk @ 1kHz -106dB

Output impedance 50Ω THD (20Hz – 20kHz) 0.001%

Intermodulation distortion 0.002%

Input overload @40dB gain (XLR / RCA) 200V RMS / 100V RMS

Input overload @70dB gain (XLR / RCA) 5mV RMS / 2.5mV RMS

Shipping weight 40 lbs / 18 Kgs

Dimensions (width x height x depth) 18.75 x 4.0 x 16.8 in. 47.6 x 10.2 x 42.7 cm.

18.0000 kg

Black (Special Order), Silver – Special Order, Two-Tone Black & Silver




1 x Pair RCA Pre-Outs, 1 x Pair XLR Pre-Outs


Black, Silver, Two Tone Black & Titanium

Depth (mm)


Height (mm)



Moon 610LP



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Moon specialises in custom home audio solutions, from custom handmade cables to headphone modification services.