Michi S430 Stereo Power Amplifier
High-Current Class AB Power with Exceptional Control and Dynamic Headroom
The Michi S430 is a high-performance stereo power amplifier designed to deliver exceptional authority, control, and musical refinement to demanding loudspeakers. Its Class AB amplifier architecture delivers 230 watts per channel into 8 ohms and up to 390 watts per channel into 4 ohms, providing substantial dynamic headroom for high-performance two-channel audio systems. At the heart of the S430 is a high-current linear power supply built around an oversized, custom-engineered toroidal transformer manufactured in-house by Michi. A large reservoir capacitor bank supports stable current delivery, firm low-frequency control, expansive soundstaging, and fast transient response. Balanced XLR and unbalanced RCA inputs provide flexible system integration, while dual 5-way speaker binding posts support secure speaker connections and bi-wire configurations. The S430 also features 12V trigger connectivity, a front-panel TFT display with selectable VU meter and spectrum display views, and a precision-machined aluminum chassis that complements the Michi Prestige range.
Feature Highlights
- 390W Class AB Power
Delivers 230W per channel into 8Ω and up to 390W per channel into 4Ω, providing substantial power and dynamic headroom for demanding loudspeakers.
- High-Current Linear Power Supply
A robust high-current power supply provides stable current delivery and ample power reserves for demanding musical passages.
- Oversized Toroidal Transformer
Features a custom-engineered, in-house manufactured toroidal transformer designed to provide clean and stable power to the amplifier circuitry.
- High-Efficiency Bulk Storage Capacitors
A large reservoir capacitor bank supports powerful bass impact, fast transient response, and precise loudspeaker control.
- Balanced XLR Inputs
Balanced XLR inputs provide a low-noise connection to compatible preamplifiers and high-performance audio systems.
- Unbalanced RCA Inputs
RCA inputs provide flexible connection to a wide range of preamplifiers and audio components.
- Dual 5-Way Speaker Binding Posts
Precision speaker terminals provide secure connections and support single-wire and bi-wire speaker configurations.
- Selectable VU Meter & Spectrum Display
The front-panel TFT display offers selectable VU meter and spectrum display views for an engaging visual presentation.
- 12V Trigger Control
12V trigger input and output connections allow convenient power-control integration with compatible system components.
- Precision-Machined Aluminum Chassis
The substantial aluminum chassis combines rigid construction with the refined industrial design of the Michi Prestige range.
- Premium Aluminum Remote Control
The included remote control provides convenient access to power, display, setup, and system functions.
Technical Specifications
Amplifier Section
- Amplifier Design: Class AB
- Power Output (FTC): 250W/Ch, 8Ω
- Continuous Power Output: 230W/Ch, 8Ω
- Maximum Power Output: 390W/Ch, 4Ω
- Speaker Impedance: 4Ω minimum
- Damping Factor: 350 (1kHz, 8Ω)
Audio Performance
- Total Harmonic Distortion (THD): <0.03%
- Intermodulation Distortion: <0.03%
- Frequency Response: 10Hz–100kHz (+0dB, -0.4dB)
- Signal-to-Noise Ratio: >115dB (IHF "A" weighted)
- Crosstalk / Separation: >70dB
Analog Inputs
- Balanced Input: XLR
- Unbalanced Input: RCA
- Input Sensitivity / Impedance, Unbalanced: 2V / 12kΩ
- Input Sensitivity / Impedance, Balanced: 4V / 200kΩ
Gain
- Unbalanced Gain: 26.5dB
- Balanced Gain: 20.5dB
Speaker Outputs
- Speaker Terminals: Dual 5-way binding posts
- Speaker Connection: Single-wire and bi-wire compatible
- Minimum Speaker Impedance: 4Ω
Control & Connectivity
- 12V Trigger: Input / Output
- USB Port: Software updates
- Service Port: Factory service use
- Remote Control: Included
Display
- Display Type: Front-panel TFT display
- Display Modes: VU Meter and Spectrum Display
General
- Power Requirements: 230V, 50Hz
- Power Consumption: 550W
- Standby Power Consumption: <0.5W
- BTU Rating: 1513 BTU/h (4Ω, 1/8th power)
- Dimensions (W × H × D): 431 × 148 × 405mm
- Front Panel Height: 131mm
- Net Weight: 17.5kg
- Finish: Black
Additional Information