Simaudio MOON 400M Mono Power Amplifier

MOON by Simaudio

*Please check with our online customer service team or your local store for stock availability


The 400M is the ultimate Power Amplifier for the money.

  • Extremely powerful, yet with a delicacy and articulation of the best amplifiers out there, the 400M can take on virtually any loudspeaker you connect it to. Delivering a bottom-end slam with authority and weight to the foundation of the music, it will transport you into a live concert environment. On the top end of the musical spectrum, the 400M delivers finesse, detail and refinement that can challenge your perception of reality
    vs. recorded music.

    When used in conjunction with the 350P Preamplifier, the results are without equal. There isn’t a more refined combination at this price point. An ultimate combination for the discerning music lover, and for those who like to listen at higher sound levels.

    Of course, key features you’d expect in a MOON Series amplifier are present such as 12V triggers and an RS-232 port for custom-install environments.

    • Fully balanced differential circuitry.
    • Precision matched proprietary MOON Bipolar output transistors for improved bass response and accurate sonic reproduction.
    • An oversized power supply using a custom proprietary toroidal transformer design.
    • A high damping factor yielding superior musical dynamics, improved signal speed & refined timbre accuracy.
    • “Class A” output to 10 watts for greater efficiency.
    • Optimized selection of very high quality electronic components.
  • Output Power at 8Ω: 400 Watts

    Output Power at 4Ω: 650 Watts

    Input Sensitivity: 800mV RMS

    Input Impedance: 47,500Ω

    Gain: 36dB

    Signal-to-noise Ratio: 106dB @ full power

    Frequency response (full range): 10Hz - 125kHz +0/-3dB

    THD (20Hz - 20kHz @ 1 watt): 0.02%

    THD (20Hz - 20kHz @ 400 watts): 0.05%

    Intermodulation distortion: 0.02%

    Shipping weight: 33 lbs / 15 Kgs

    Dimensions (width x height x depth): 16.9 x 3.5 x 14.0 in. 42.9 x 8.9 x 35.6 cm.