Simaudio 641 North collection Factory Demonstration unit.
Simaudio 641 North collection Factory Demonstration unit.
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We have a unique opportunity on one unit that is a Factory-Certified unit. This unit will carry a 5-year factory-certified warranty.
Integrated Amplifier
even with the most demanding loudspeakers
Centerpiece
The MOON 641 houses a preamplifier and a power Amplifier in a single chassis, built around a dual-mono layout rated at 125 W/8 Ω and 250 W/4 Ω. The MDCA circuit operates outside the signal path to reduce distortion without requiring global feedback, while M-VOL3 delivers precise and stable gain control at low levels. With a damping factor of 700, 109 dB SNR, and 2 Hz–90 kHz (+0/–3 dB) frequency response, the 641 provides measured control for a wide range of loudspeakers. The 4.3” color display helps with everyday operation and setup. Designed and assembled in Québec, it naturally takes the central place in a modern home audio system.
Wholistic
The 641 focuses on careful internal layout and vertical heatsinks for thermal and mechanical stability. Usability combines the 4.3” display, local controls, and MOONLink connectivity for easy coordination with other North Collection components. Standby options include a low-power mode (2.5 W) for everyday convenience. The rear panel provides line inputs, a line output, and clearly laid-out speaker terminals for neat wiring. The BRM-1 intelligent remote is included for direct control. Whether used on its own or paired with a dedicated source, such as the MOON 681, the 641 offers a precise and reliable experience aligned with North Collection design.
Integrated Amplifiers
Specifications
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MDCA – MOON Distortion-Cancelling Amplifier
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MOON Transistors
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Dual Mono Configuration
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M-VOL3 – 3rd Generation Improved Electronic Gain Control
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MOONLink
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4.3’’ LCD Color Graphic Display
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Output Power (Stereo 8 Ω)125 W
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Output Power (Stereo 4 Ω)250 W
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Input Sensitivity300 mV – 6 V
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Input Impedance22 kΩ
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Gain40 dB
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Frequency Response2 Hz – 90 kHz (+0 dB / –3 dB)
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Crosstalk–109 dB
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Signal-to-Noise Ratio109 dB
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Total Harmonic Distortion + Noise (@ 1 W)0.008%
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Total Harmonic Distortion + Noise (@ 125 W)0.003%
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Intermodulation Distortion0.06%
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Damping Factor700
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Power Consumption (Idle)38 W
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Power Consumption (Full Power Standby)37 W
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Power Consumption (Low Power Standby)2.5 W
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Shipping Weight57.5 lbs / 26 kg
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Dimensions (width x height x depth)18.95 x 4.03 x 18.32 in
48.1 x 10.2 x 46.5 cm.
