Michi Prestige S430 Stereo Power Amplifier

The Michi Prestige S430 Stereo Power Amplifier delivers high-current Class AB amplification for demanding high-fidelity loudspeakers and reference two-channel audio systems. Rated at 250 watts per channel into 8 ohms (FTC) and up to 390 watts per channel into 4 ohms, the S430 combines substantial power reserves, precise speaker control, and the refined engineering of Michi's Prestige Series.

An oversized, custom-engineered toroidal transformer, high-capacity storage capacitors, and a low-noise analog circuit design provide the foundation for exceptional dynamic performance. With balanced XLR and unbalanced RCA inputs, the S430 integrates seamlessly with high-end stereo preamplifiers and source components.

Key Features

• High-Current Class AB Amplification: 250 watts per channel into 8 ohms (FTC), with maximum output of 390 watts per channel into 4 ohms.

• Custom Toroidal Transformer: Oversized, in-house-manufactured power transformer designed for stable current delivery and dynamic headroom.

• High-Capacity Power Supply: Large reservoir capacitors support demanding musical passages and controlled low-frequency reproduction.

• Balanced XLR and RCA Inputs: Flexible connectivity for premium stereo preamplifiers and analog audio systems.

• Damping Factor of 350: Provides precise electrical control of connected loudspeakers.

• Low-Distortion Performance: Total harmonic distortion below 0.03% for accurate musical reproduction.

• Wide Frequency Response: 10Hz–100kHz (±0.4dB).

• Dual Five-Way Speaker Binding Posts: Secure connections for high-quality speaker cables.

• Premium Aluminum Chassis: Refined construction with a front-panel display and selectable meter views.

• Remote Control Included: Convenient operation and display control.

Power and Control for High-End Loudspeakers

The Michi S430 is engineered to drive demanding loudspeakers with authority while preserving the detail and tonal balance of the original recording. Its high-current output stage and substantial power supply deliver the headroom needed for complex musical passages, powerful bass transients, and wide dynamic contrasts.

With a damping factor of 350 and a signal-to-noise ratio exceeding 115dB, the S430 is designed for clean, controlled playback across a broad range of musical styles and listening levels.

Precision Engineering and System Integration

At the center of the S430 is a custom toroidal transformer manufactured in-house, supported by high-efficiency bulk storage capacitors. This power supply architecture provides stable energy delivery for the amplifier's Class AB output stage.

Balanced XLR inputs offer compatibility with reference stereo preamplifiers, while RCA connections accommodate conventional analog components. The S430's dual five-way speaker terminals provide versatile loudspeaker cable connections.

A precision-machined aluminum enclosure, understated front-panel controls, and configurable meter display complete the Prestige Series design.

Technical Specifications

Purchase the Michi S430 at The Grid HiFi

The Michi Prestige S430 is available through The Grid HiFi for high-performance stereo systems throughout the United States. Our Houston showroom provides expert guidance on matching Michi amplification with premium loudspeakers, preamplifiers, and source components.

Order online or call The Grid HiFi at (713) 218-8120 for personalized system recommendations.