MOON 400M Power Amplifier – Precision and Power Redefined The MOON 400M Power Amplifier by SimAudio exemplifies a harmonious blend of formidable power and refined audio fidelity. Delivering 400 watts into 8 ohms and 650 watts into 4 ohms, this monoblock amplifier is engineered to drive a wide range of loudspeakers with authority and precision. Its fully balanced differential circuitry and proprietary MOON Bipolar output transistors ensure accurate sonic reproduction, providing listeners with an immersive and lifelike musical experience. Exceptional Power and Control The MOON 400M's robust power output is complemented by an oversized power supply featuring a custom-designed toroidal transformer. This design ensures consistent and reliable performance, even during demanding musical passages. With a high damping factor, the amplifier offers superior musical dynamics, improved signal speed, and refined timbre accuracy, allowing for precise control over speaker drivers and delivering tight, articulate bass response. Refined Audio Performance Operating in "Class A" mode for the first 10 watts, the MOON 400M achieves greater efficiency and minimizes distortion at lower listening levels. This feature, combined with the use of high-quality electronic components, results in a sound signature that is both detailed and musically engaging. Listeners can expect a top-end that delivers finesse and detail, challenging perceptions of reality versus recorded music. Seamless Integration and Versatility Designed with the discerning audiophile in mind, the MOON 400M includes essential features such as 12V triggers and an RS-232 port, facilitating seamless integration into custom-install environments. When paired with the MOON 350P Preamplifier, the combination offers an unparalleled level of refinement, making it an ultimate choice for those who appreciate high-level sound reproduction. Technical Specifications Output Power at 8Ω 400 W Output Power at 4Ω 650 W 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 W) 0.02% THD (20Hz - 20kHz @ 400 W) 0.05% Intermodulation Distortion 0.02% Dimensions (W x H x D) 16.9 x 3.5 x 14.0 in (42.9 x 8.9 x 35.6 cm) Shipping Weight 33 lb (15 kg) The MOON 400M Power Amplifier stands as a testament to SimAudio's dedication to excellence in audio engineering. Its combination of power, precision, and refined sound quality makes it a compelling choice for audiophiles seeking to elevate their listening experience.