The Michi Prestige S430 Stereo Power Amplifier delivers premium Class AB amplification for serious two-channel audio systems. With 230 watts per channel into 8 ohms and 390 watts per channel maximum output into 4 ohms, it provides the power and control needed for high-performance loudspeakers. An oversized toroidal transformer, high-efficiency capacitors, balanced XLR inputs, RCA inputs, and dual 5-way speaker binding posts support refined sound and flexible system integration. Its elegant black aluminum chassis, TFT display, 12V trigger connections, and included remote control make it a sophisticated centerpiece for audiophile listening rooms.
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Rotel Michi Prestige S430 Stereo Power Amplifier

The Rotel Michi Prestige S430 Stereo Power Amplifier brings commanding power, refined control, and elegant high-end engineering to premium two-channel audio systems. Rated at 230 watts per channel into 8 ohms, with 390 watts per channel maximum output into 4 ohms, the S430 is designed to drive high-performance loudspeakers with authority, dynamic headroom, and musical precision. Its Class AB amplifier design is supported by an oversized in-house manufactured toroidal transformer, high-efficiency bulk storage capacitors, symmetrical circuit traces, and carefully selected signal-path components for faithful music reproduction. Balanced XLR and unbalanced RCA inputs, dual 5-way speaker binding posts, 12V trigger control, a front-panel TFT display, and an included remote control make the S430 a powerful and polished centerpiece for a serious stereo system.

See the matching Rotel Michi Prestige P430 Stereo Preamplifer.

What It's Good At:

• Delivering powerful, controlled stereo amplification for high-performance loudspeakers
• Producing dynamic bass impact, scale, and transient response with a high-current linear power supply
• Supporting premium preamplifier connections with balanced XLR and RCA inputs
• Enabling secure speaker cable connection and bi-wire speaker configurations
• Integrating cleanly into advanced systems with 12V trigger input and output
• Adding refined visual feedback through selectable VU meter and spectrum display views

Michi Prestige S430 Stereo Power Amplifier Full Specifications:

• Amplifier Class: Class AB
• Power Output (FTC): 250 watts/channel into 8 ohms
• Continuous Power Output (Non FTC): 230 watts/channel into 8 ohms
• Maximum Power Output (Non FTC): 390 watts/channel into 4 ohms
• Total Harmonic Distortion: < 0.03%
• Intermodulation Distortion: < 0.03% at 60 Hz : 7 kHz, 4:1
• Frequency Response: 10 Hz–100 kHz, 0 ± 0.4 dB
• Damping Factor: 350 at 1 kHz, 8 ohms
• Speaker Impedance: 4 ohms minimum
• Signal-to-Noise Ratio: > 115 dB, IHF “A” weighted
• Crosstalk/Separation: > 70 dB
• Input Sensitivity/Impedance, Unbalanced: 2 V / 12k ohms
• Input Sensitivity/Impedance, Balanced: 4 V / 200k ohms
• Gain, Unbalanced: 26.5 dB
• Gain, Balanced: 20.5 dB
• Power Requirements, Europe: 230 V, 50 Hz
• Power Requirements, USA: 120 V, 60 Hz
• Power Consumption: 550 watts
• Standby Power Consumption: < 0.5 watts
• Power Supply: High-current linear power supply
• Transformer: Oversized custom-engineered, in-house manufactured toroidal transformer
• Capacitors: High-efficiency bulk storage capacitors; custom-made slit foil capacitors
• Circuit Design: Symmetrical circuit traces
• Signal Path Components: Metal film resistors and polystyrene or polypropylene capacitors in key signal paths
• Analog Inputs: RCA unbalanced inputs and balanced XLR inputs
• Speaker Outputs: Dual precision 5-way speaker binding posts
• Speaker Connection Support: Single-wire and bi-wire speaker configurations
• Speaker Connector Compatibility: Bare wire, connector lugs, or dual banana plugs where permitted
• 12V Trigger: 12V trigger input and output
• Trigger Input Range: Accepts 3 V to 30 V AC or DC control signal
• USB Port: Rear USB port for software updates
• Service Port: Rear service port for factory service use only
• AC Power Input: Rear AC power input
• Display: Front-panel TFT display
• Display Views: Selectable VU meter and spectrum display views
• Front Panel Controls: Power button and indicator, display, remote sensor
• Remote Control: Includes RR-MH31 remote control
• Remote Functions Used: Power, navigation, OK, dim, setup
• Remote Functions Not Used on S430: Mute, volume, audio, source, and preset buttons
• Remote Batteries: Requires two AAA batteries
• Balanced XLR Pin Assignment: Pin 1 ground/screen, Pin 2 hot/in phase, Pin 3 cold/out of phase
• Protection Circuitry: Thermal and over-current protection
• Recommended Ventilation Clearance: Minimum 10 cm / 4 in of unobstructed clearance around the chassis
• Installation Note: Plug directly into a polarized wall outlet using the supplied cable or a high-current compatible cable; do not use an extension cord
• Compliance Notes: Designed to comply with RoHS and WEEE directives
• Dimension: 17"W x 5 5/6"H x 16"D
• Net Weight: 38.6 lbs
• Finish: Black

Michi Prestige S430 Stereo Power Amplifier Q&A:

How much power does the Michi S430 deliver?

The Michi S430 delivers 230 watts per channel into 8 ohms as a continuous non-FTC rating, 250 watts per channel into 8 ohms under FTC rating, and up to 390 watts per channel into 4 ohms.

What type of speakers is the S430 designed to drive?

The S430 is designed for high-performance loudspeakers with a minimum recommended impedance of 4 ohms, offering the current delivery and damping control needed for demanding stereo systems.

Does the Michi S430 support balanced connections?

Yes. The S430 includes balanced XLR inputs for low-noise connection to premium preamplifiers, along with standard unbalanced RCA inputs for broader system compatibility.

Can the S430 be used in a bi-wire speaker setup?

Yes. The dual precision 5-way speaker binding posts support secure speaker cable connection and bi-wire speaker configurations.

What makes the S430 power supply special?

The S430 uses a high-current linear power supply with an oversized in-house manufactured toroidal transformer and high-efficiency bulk storage capacitors to support dynamic impact, bass control, and musical stability.

Does the S430 include remote control operation?

Yes. The S430 includes the RR-MH31 remote control for power, menu navigation, setup, display dimming, and related system controls.

Can the S430 integrate with automated audio systems?

Yes. The S430 includes 12V trigger input and output connections, allowing it to power on and off with compatible preamplifiers, processors, or system controllers.

How much ventilation does the S430 need?

The S430 should have at least 10 cm, or 4 inches, of unobstructed clearance around the chassis to allow proper airflow and help prevent overheating.