expiredcvp33 posted Feb 10, 2026 12:10 AM
Item 1 of 5
Item 1 of 5
expiredcvp33 posted Feb 10, 2026 12:10 AM
Fosi Audio CA30 100Wx4 Car Amplifier
+ Free Shipping$112
$139
19% offFosi Audio
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Deal Details
Fosi Audio has Fosi Audio CA30 100Wx4 Car Amplifier for $139.99 - $27.99 when you apply discount code CA30EB20 at checkout = $112. Shipping is free.
Thanks to community member cvp33 for finding this deal.
About this item:
Thanks to community member cvp33 for finding this deal.
About this item:
- 4 Channel Car Audio Amplifiers: Class D 4-channel design supports stereo connection and bridging for flexible system configs. Infineon IR4322 chip delivers clean, full-range sound to drive your vehicle's speakers with low distortion and minimal heat
- HiFi Sound Quality: Brings Fosi Audio's home audio technology to the car audio world. Features JRC/ST op-amps with THD+N ≤0.008%, SNR ≥100dB, and ultra-low noise floor ≤200μV—specifications that outperform standard car amplifiers in its class
- 88% High Efficiency & Bridgeable: Class D design minimizes heat while delivering 100W x 4, and bridgeable mode provides 320W x 2 @ 4Ω for subwoofers. REM wire enables linking on/off with your head unit, while adjustable HPF/LPF crossover (50–250 Hz)
- Compact Universal Fit: Measures 7.3" x 3.9" x 1.7" to fit under seats or tight spaces. Compatible with 10–16V DC gasoline vehicles, including sedans, SUVs, trucks, MPVs, Jeeps, and vans, for easy installation
- Smart Cooling & Protection: CNC aluminum finned heatsink keeps temps low for stable, long-session sound. Built-in protection against overheating, short circuits, over-/under-voltage, and reverse polarity; handy LED indicators keep you informed
Editor's Notes
Written by johnny_miller | Staff- Our research indicates this offer is $20.99 lower (16% savings) than the next best price from a reputable merchant at the time of this post.
- Please see the original post for additional details & give the forum comments a read for helpful discussion.
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Fosi Audio has Fosi Audio CA30 100Wx4 Car Amplifier for $139.99 - $27.99 when you apply discount code CA30EB20 at checkout = $112. Shipping is free.
Thanks to community member cvp33 for finding this deal.
About this item:
Thanks to community member cvp33 for finding this deal.
About this item:
- 4 Channel Car Audio Amplifiers: Class D 4-channel design supports stereo connection and bridging for flexible system configs. Infineon IR4322 chip delivers clean, full-range sound to drive your vehicle's speakers with low distortion and minimal heat
- HiFi Sound Quality: Brings Fosi Audio's home audio technology to the car audio world. Features JRC/ST op-amps with THD+N ≤0.008%, SNR ≥100dB, and ultra-low noise floor ≤200μV—specifications that outperform standard car amplifiers in its class
- 88% High Efficiency & Bridgeable: Class D design minimizes heat while delivering 100W x 4, and bridgeable mode provides 320W x 2 @ 4Ω for subwoofers. REM wire enables linking on/off with your head unit, while adjustable HPF/LPF crossover (50–250 Hz)
- Compact Universal Fit: Measures 7.3" x 3.9" x 1.7" to fit under seats or tight spaces. Compatible with 10–16V DC gasoline vehicles, including sedans, SUVs, trucks, MPVs, Jeeps, and vans, for easy installation
- Smart Cooling & Protection: CNC aluminum finned heatsink keeps temps low for stable, long-session sound. Built-in protection against overheating, short circuits, over-/under-voltage, and reverse polarity; handy LED indicators keep you informed
Editor's Notes
Written by johnny_miller | Staff- Our research indicates this offer is $20.99 lower (16% savings) than the next best price from a reputable merchant at the time of this post.
- Please see the original post for additional details & give the forum comments a read for helpful discussion.
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Top Comments
https://www.youtube.com/watch?v=bycYfpN
The Infineon IR4322 is a high-performance, 2-channel integrated Class D audio amplifier chipset designed to deliver high-quality sound with minimal heat, often utilized in compact, high-efficiency audio applications. It is frequently highlighted as a core, premium component in specialized audio equipment, such as the Fosi Audio CA30 car amplifier.
SPECS:
Design: Integrated 2-channel analog input Class D audio amplifier in a small 7x7 mm PQFN44 package.
Performance: Capable of delivering up to 100W x 2 output.
Efficiency: High-efficiency design (around 88%) that often allows for operation without a mechanical heatsink in typical music playback, reducing system size.
Protection Features: Integrated self-resetting protection for overcurrent, over-temperature, and under-voltage.
Audio Quality: Designed for low distortion and high-fidelity sound, featuring clip and fault reporting.
Car Audio: Used in compact 4-channel amplifiers to provide high-power, low-distortion sound.
Home Audio: Suitable for home theater systems, powered speakers, and docking stations.
The IR4322 is part of a family (including the IR4321) that integrates a PWM controller and digital audio MOSFETs to achieve a high power-to-size ratio.
39 Comments
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Must. Resist.
https://www.youtube.com/watch?v=bycYfpN
Tripath completely changed the game in the early 2000's with their "Class T" chips. Texas Instruments introduced a competing technology shortly after and they're in almost everything now, including both desktop and this Fosi amp.
Good for consumers, honestly.
https://www.youtube.com/watch?v=bycYfpN
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Back on topic, I'm lost as to why this is a deal, so many other amps from makers in the car audio space for similar prices. Taramps is a popular budget option...
https://www.youtube.com/watch?v=bycYfpN
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