MOON CLASSIC SERIES
LP5.3 Phono Preamplifier
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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 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.
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Significant Design Features
Large isolated power supply on a separate circuit board 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 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 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 incorporates Evolution Series i2DCf (Independent Inductive DC Filtering); 1 inductor
for each and every IC 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 ·
Low operating temperature for a longer than normal life expectancy.
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| Type |
Solid State |
| Power Supply Transformer |
10VA |
| Power Supply Capacitance |
14,000µF |
| Single Ended Inputs (RCA) |
1 pair |
| Input Impedance - Adjustable |
47, 100, 470, 1K, and 47K ohms |
| Input Capacitance - Adjustable |
0, 100, and 470 pF |
| Single-ended Output (RCA) |
1 pair |
| Balanced Output (XLR) |
1 pair |
| Gain - Adjustable (for Single-ended outputs) |
40, 54, 60 and 66dB |
| Gain - Adjustable (for Balanced outputs) |
46, 60, 66 and 72dB |
| Input overload @ 40dB gain |
58mV RMS |
| Input overload @ 54dB gain |
11mV RMS |
| Input overload @ 60dB gain |
6mV RMS |
| Input overload @ 66dB gain |
3mV RMS |
| Signal-to-noise Ratio (full scale @ 40dB gain) |
110dBr |
| Signal-to-noise Ratio (full scale @ 66dB gain) |
88dBr |
| Maximum Output (1kHz @ 10k ohms) |
6.0 Volts |
| Output Impedance (Balanced / Single-Ended) |
100 ohms / 50 ohms |
| Frequency Response |
20Hz - 20kHz (±0.5dB) |
| Crosstalk @ 1kHz |
-100dB |
| IMD |
< 0.009% |
| THD (20Hz - 20kHz) |
< 0.01% |
| Available Faceplate Finishes |
Black and Silver |
| Power Consumption |
6 Watts |
| AC Power Requirements |
120V / 60Hz 240V / 50Hz |
| Fuse Replacement - 120V |
0.2A short slow blow |
| Fuse Replacement - 230V |
0.1A short slow blow |
| Shipping weight |
7 lbs / 3 kgs |
| Dimensions (W x H x D) |
8 x 3.25 x 11 in. (20 x 8 x 28 cm.) |
Specifications are subject to change without notice.
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