Michi S430 Stereo Power Amplifier

Bring your loudspeakers to life with greater authority, control, and scale.The Michi Prestige S430 Stereo Power Amplifier delivers powerful Class AB performance, high-current drive, and precision engineering for accurate musical reproduction.

The Michi Prestige S430 Stereo Power Amplifier delivers authority, composure, and musical realism. Rated at 390 watts per channel into 4 ohms (230 watts into 8 ohms), the S430 provides the dynamic headroom needed to reveal greater scale and impact from high-performance loudspeakers.

An oversized, in-house-manufactured toroidal transformer and large reservoir capacitor bank support stable current delivery for dynamic bass impact to demanding speaker loads. Balanced XLR and RCA inputs and dual 5-way speaker binding posts allow the S430 to integrate easily into performance audio systems.

The S430’s elegant aluminum chassis and front-panel display with selectable meter views deliver a refined visual presence, reinforcing the amplifier’s role as the centerpiece of the listening experience.

Engineered with care.

The S430 brings dedicated Michi Class AB power amplification to the Prestige platform, delivering 230 watts per channel into 8 ohms and 390 watts per channel into 4 ohms. 

Its high-current amplifier architecture combines an oversized 1,000 Volt-Amp, in-house-manufactured toroidal transformer, large bulk-storage capacitors, array of multi-stage push-pull BIPOLAR output transistors, and an isolated star-grounding topology. The result is stable, controlled loudspeaker drive with firm bass and substantial reserve power. At every volume level—from quiet passages to demanding musical peaks—the S430 maintains clarity, control and dynamic authority, even with the most challenging loudspeakers. 

Balanced XLR and RCA inputs and dual gold-plated five-way speaker terminals provide standard single-wire and bi-wire connection options, while the front-panel TFT display offers selectable VU meter and spectrum meter views.