641

Integrated Amplifier

Effortless dynamics and tonal control,
even with the most demanding loudspeakers

The MOON 641 is the centrepiece of any audio system, housing a preamplifier and a power amplifier in a single unit. This thrilling entry point to the North Collection is a truly stunning integrated amplifier showcasing premium MOON design and the latest audio technologies.

Starting at :$ 11,000 USD
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Overview

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 global feedback, while M-VOL3 delivers precise, 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 favors a clear, reliable experience aligned with North Collection design.

Performance

At its core, the MDCA + M-VOL3 pairing sets the 641 apart. MDCA lowers noise and distortion; M-VOL3 secures channel tracking and fine-grained adjustment. The dual-mono topology and robust power supply preserve signal integrity from inputs to binding posts. Published figures — 0.003% THD+N @ 125 W, –109 dB crosstalk — confirm stable performance at real listening levels. The 4.3" display streamlines access to settings. For digital playback and streaming, the MOON 681 is a natural companion with smooth coordination through MOONLink. The result is precise, durable performance consistent with the North Collection identity.

Integrated Amplifiers

Specifications

Product features
In the box
User manual
Design features

  • MDCA – MOON Distortion-Cancelling Amplifier

  • MOON Transistors

  • Dual Mono Configuration

  • M-VOL3 – 3rd Generation Improved Electronic Gain Control

  • MOONLink

  • 4.3’’ LCD Color Graphic Display

Specifications
  • Output Power (Stereo 8 Ω)
    125 W
  • Output Power (Stereo 4 Ω)
    250 W
  • Input Sensitivity
    300 mV – 6 V
  • Input Impedance
    22 kΩ
  • Gain
    40 dB
  • Frequency Response
    2 Hz – 90 kHz (+0 dB / –3 dB)
  • Crosstalk
    –109 dB
  • Signal-to-Noise Ratio
    109 dB
  • Total Harmonic Distortion + Noise (@ 1 W)
    0.008%
  • Total Harmonic Distortion + Noise (@ 125 W)
    0.003%
  • Intermodulation Distortion
    0.06%
  • Damping Factor
    700
  • Power Consumption (Idle)
    38 W
  • Power Consumption (Full Power Standby)
    37 W
  • Power Consumption (Low Power Standby)
    2.5 W
  • Shipping Weight
    57.5 lbs / 26 kg
  • Dimensions (width x height x depth)
    18.95 x 4.03 x 18.32 in
    48.1 x 10.2 x 46.5 cm
Complementary products
To complement this product and improve your Hi-Fi system, here is what our specialists suggest:

  • 681 Network Player / DAC

    The feature-rich MOON 681 draws upon stunning MOON design and advanced digital audio technologies to deliver a seamless experience with the 641 and to serve as a complete digital front end to any analog amplifier.

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