Moon by Simaudio
Simaudio MOON Evolution 850P Preamplifier
Best high-end preamplifier for audiophiles seeking uncompromising sonic purity and longevity.
Experience unparalleled musicality and clarity with the Simaudio MOON 850P Evolution Preamplifier. This high-performance solid-state unit offers a pristine signal path, free from coloration and grain, delivering exceptional dynamics and resolution. Its robust, dual-mono external power supply ensures consistent performance, while the advanced M-Octave damping system minimizes vibration. Designed for decades of reliable operation, the 850P provides ultimate system flexibility with extensive input and output options, all backed by an industry-leading 10-year warranty.
$28000.00
Owner Satisfaction
4.9
/ 5
Category Rank
1
/ 93
Best Signal Processors
Price vs Category Average
+90%
Above average
Weight
7232.66
/ pounds ( kg)
Who it's for
- Precision-focused listeners requiring perfect channel balance at every volume level
- Audiophiles seeking pure, uncolored reproduction of their favorite recordings
- Listeners demanding absolute signal purity and maximum dynamic range
Who should skip it
- Minimalists with limited rack space or simple equipment setups
- Budget-conscious music lovers seeking high-end performance at accessible prices
- Users wanting an all-in-one solution with integrated digital processing
Performance breakdown
Sonic Transparency
Delivers a pristine signal path completely free from coloration or grain.
Dynamic Range
Captures the full scale of musical transients with effortless, authoritative precision.
Volume Precision
Micro-adjustments allow for perfect gain staging at any listening level.
Vibration Isolation
The M-Octave damping system effectively eliminates mechanical interference for cleaner output.
Connectivity Versatility
Extensive balanced and single-ended options accommodate complex, high-end audio systems.
Build Longevity
Robust construction and a decade-long warranty ensure lasting reliability for audiophiles.
Key Specs
Weight
72 pounds (32.66 kg)
Inputs
4 single-ended RCA, 3 balanced XLR
Outputs
2 balanced XLR, 1 RCA (fixed), 1 RCA (variable)
Power Consumption
27 watts
Circuitry Type
Solid State
Power Supply Type
External
Output Connection Types
RCA, XLR Balanced
Volume control increments
0.1-dB and 1-dB
Features
- Exceptional musicality and sonic purity
- Superior cleanliness, dynamics, and resolution
- Effortless, long-term reliable performance
- Low power consumption for continuous operation
- Precise and refined volume control
- Advanced vibration damping system
- Extensive connectivity options
- Industry-leading 10-year warranty
What customers say
The Simaudio MOON Evolution 850P is widely regarded as a reference standard component due to its exceptional sonic transparency and neutrality. Users emphasize the unit's near total absence of coloration, allowing music to emerge with pristine clarity. This performance is attributed to the dual-chassis design which effectively minimizes noise and maximizes dynamic range. Listeners consistently report profound improvements in soundstage depth and precise instrument placement. While the initial investment is significant, owners feel the cost is justified by the impeccable build quality and world-class, effortless musical reproduction. The prevailing sentiment is deep satisfaction with a component built for uncompromising, long-term performance.
Know before you buy
The external power supply isolates sensitive audio circuitry from electromagnetic interference and mechanical noise generated by the power components. This dual-mono design ensures a cleaner signal path, resulting in improved dynamics and lower noise floor.
The 850P features a highly refined volume control system that allows for adjustments in both 0.1-dB and 1-dB increments. This precision ensures you can find the perfect listening level regardless of your amplifier or speaker sensitivity.
The unit is equipped with seven total inputs: four single-ended RCA and three balanced XLR connections. This provides ample flexibility to integrate a variety of high-end analog sources into your system.
The M-Octave system is an advanced mechanical damping solution designed to minimize vibrations that can color the audio signal. By stabilizing the chassis, it helps the preamplifier maintain clarity and resolution during complex musical passages.
Yes, the 850P is designed for long-term reliability and features low power consumption, drawing only 27 watts. It is engineered to remain stable and perform consistently even during continuous operation.
Given that the 850P weighs 72 pounds, you will need a sturdy, stable equipment rack capable of supporting its significant mass. Additionally, you must account for space to accommodate both the main unit and the external power supply.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$28000