Michi S430 Stereo Power Amplifier

Meet the S430 Stereo Power Amplifier
Engineering at its best, from Michi by Rotel

The Michi Prestige S430 Stereo Power Amplifier delivers authority, control, and musical refinement expected from the Michi ecosystem. Rated at 230 watts per channel into 8 ohms and 390 watts per channel into 4 ohms, the S430 provides the power and dynamic headroom required to drive high-performance loudspeakers with confidence.

At its heart is a substantial high-current linear power supply built around an oversized, in-house-manufactured toroidal transformer and large reservoir capacitor bank. This foundation supports stable current delivery, firm low-frequency control, expansive soundstaging, and fast, effortless transient response, allowing music to unfold with scale, impact, and natural detail.

Balanced XLR and RCA inputs provide flexible, low-noise connection to premium preamplifiers and source systems, while dual precision 5-way speaker binding posts support secure cable connection and bi-wire speaker configurations. 12V trigger control allows clean integration into complete performance audio systems, including installations built around matching Michi components.

The S430s elegant aluminum chassis, substantial construction, and refined industrial design reflect the engineering discipline beneath the surface. A front-panel TFT display with selectable VU meter and spectrum display views adds visual engagement without distraction. Built as both a precision power amplifier and a natural partner within the Michi Prestige system, the S430 delivers power with poise, refinement, and real musical connection.

Product Features
2 x 390 Watts of robust Class AB power (4 ohms)
Oversized custom-engineered, in-house manufactured toroidal transformer
High-efficiency bulk storage capacitors
Balanced XLR and RCA inputs
Dual 5-way speaker binding posts for bi-wire installations
Dimmable front-panel TFT high-resolution display
Michi Prestige remote control 
About Michi

Michi is a flagship series of products built on the proud history and heritage of Rotel. Michi represents over 55 years of experience coupled with the passion of a family business and ever-growing family of satisfied product owners.

Acoustic Elevation. Sonic Evolution. Visual Perfection.

Michi, because their reputation is personal.

Technical Specifications

Power Output
(FTC) 250 W/Ch (8 )
Continuous Power Output
(Non FTC)
230 W/Ch (8 )
Maximum Power Output
(Non FTC)
390 W/Ch (4 ) 
Total Harmonic Distortion (THD)
Frequency Response
10 Hz - 100 kHz (0±0.4 dB) 
S/N Ratio (IHF "A" Weighted)
> 115 dB
Dimensions (W × H × D)
431 × 148 × 405 mm
17" ×5 5 /6" × 16"
Front Panel Height
131 mm (5 1/6")
Power Requirements
120 V, 60 Hz
Power Consumption
550 W
Standby Power Consumption
Net Weight
17.5 kg (38.6 lbs.)
BTU Rating (4 , 1/8th power)
1513 BTU/h
Intermodulation Distortion (60 Hz:7 kHz, 4:1)
Damping Factor (1 kHz, 8 ohms)
350
Speaker Impedance
4 ohms minimum 
Gain
Unbalanced 26.5 dB
Balanced 20.5 dB
Input Sensitivity / Impedance
Unbalanced 2 V / 12 kohms
Balanced 4 V/ 200 kohms
Crosstalk/Separation
> 70 dB
*This information has been obtained from Manufacturers website. We advise that Features, Specifications & Price are subject change without notice.

E&OE