FOSI AUDIO CA30 4-Channel Car Amplifier

The Fosi Audio CA30 is a power amplifier for car audio systems. Designed around the Infineon IR4322 amplifier chip, it delivers 4×100W under 4Ω, or 2×320W under 4Ω in bridged mode, using a high-efficiency architecture that delivers stable current while limiting internal heat build-up. This design results in a SINAD ≥ 80dB and THD+N ≤ 0.008%, ensuring low distortion reproduction, while a signal-to-noise ratio ≥ 100dB and background noise limited to ≤ 200μV preserve the clarity of micro-information, regardless of the listening level.

Designed for car audio systems requiring both dynamic reserve and configuration flexibility, it can be used in four independent channels to power a front/rear set, or in two bridged channels to drive more demanding loads. Beyond pure performance, this approach is accompanied by a set of active protections to guard against overheating, short circuits, overvoltage, undervoltage and polarity reversal, continuously monitoring electrical parameters to secure the installation and speakers.