We at Sunny’s have 2 amplifiers arriving for Demonstration. If you are going to THE SHOW in Costa Mesa, please visit us on the Second floor. The MOON 461 is an analog power Amplifier designed to amplify the signalfrom a preamplifier or other source component with absolute accuracy. As the most powerfulmodel in the Compass Collection, it is engineered to deliver high current capability,low distortion, and stable performance across a wide range of loudspeaker loads.Its design is centered on preserving the integrity of the incoming signal while maintainingtransparency, dynamic expression, and composure under demanding conditions. The 461 stands as the most powerful Amplifierin the Compass Collection and pairs naturallywith the MOON 491 network player/preamplifierto deliver the highest level of system performancein the Collection. Its purpose is clear: to provide substantialoutput capability, strong channel separation, and low-distortion amplification in a compact, elegant chassis.The result is an Amplifier designed for systems that demandboth refinement and headroom, achieved througha focused, efficient, and thoughtfully engineered design.A continuous pursuit of absolute accuracy, transparency, and dynamic capability drives the design philosophy of the 461. Rather than imparting a sonic signature,the Amplifier is engineered to maintain signal fidelity,preserving low-level detail, harmonic structure, and linearityacross the entire frequency spectrum. From delicatepassages to large-scale transients, the 461 maintainsconsistent performance without compression or strain.MOON Distortion-Canceling Amplifier (MDCA),represents the latest evolution of more than four decadesof research and development in high-performance analogAmplifier design. While it is not derived from previoustopology, this Class AB amplification technology reflectsthe cumulative knowledge gained through numerousaward-winning MOON Amplifier designs. MDCA operateson a fundamentally different principle than traditionalfeedback-based amplifiers, aiming to eliminate distortionand coloration without placing corrective circuitry directlyin the audio signal path. Instead, the MDCA circuitcompares the input signal to the amplified outputin real time, isolates the generated noise and minute,non-linear errors, and injects a precise correction signaldirectly into the output stage. Because this error correctionprocess takes place outside of the main signal path,distortion is reduced more efficiently while simultaneouslylowering output impedance and improving the damping factor.The design is fully DC-coupled and naturally rejectsunwanted DC without the need for a servo circuit,and delivers wider bandwidth, lower noise, and significantlyreduced distortion compared with the previous MOONamplification platforms. The result is an Amplifierthat combines measurable technical advances with greaterclarity, control, and musicality.The Amplifier uses two proprietary MOON Hybrid Powersupply modules (MHP), one dedicated to each channel.MHP is a proprietary power supply architecture designedto deliver a stable, low-noise, and high-current energysource to the Amplifier under all operating conditions.At its front end, a high-performance Power FactorThe correction (PFC) stage actively converts the AC mainsto a high-voltage DC rail of 400 V. This high-voltage railfeeds a high-frequency LLC resonant converter operating Output Power (Stereo 8 Ω): 150 WOutput Power (Stereo 4 Ω): 300 WOutput Power (Mono 8 Ω): 450 WInput Sensitivity: 1 VInput Impedance: 22 kΩGain: 31 dBFrequency Response: 5 Hz – 100 kHz +0/-3 dBTotal Harmonic Distortion + Noise (@ 1 W) : 0.005%Total Harmonic Distortion + Noise (@ 150 W) : 0.003%Intermodulation Distortion: 0.005%Signal-to-Noise Ratio: 114 dBCrosstalk : –114 dBDamping Factor: 425Power Consumption (Idle): 35 WPower Consumption (Full Power Standby): 34 WPower Consumption (Low Power Standby): 1 WDimensions (width x height x depth) : 16.9x3.5x14.5 in / 42.9x8.7x36.8 cmShipping Weight: 24 lbs / 11 kg
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