Fosi Audio CA30 4 Channel Car Amplifier 800W RMS MAX Full Range Audio Amps SUB

About this item

The Fosi Audio CA30 is a 4-channel Class D amplifier built for car audio upgrades, pairing an Infineon chip with a damping factor of ≥140@100Hz for tight, accurate bass and clear mids and highs. It outputs 160W x4 at 4Ω or 200W x4 at 2Ω, and can be bridged to 400W x2 at 4Ω when you need more power for subwoofers. Compact at 186 x 101 x 44.2mm, it installs easily in sedans, SUVs, trucks or vans, with crossover controls and full protection circuitry built in for a stable, DIY-friendly setup.

• 4-channel Class D car amp built around an Infineon IR4322 chip, rated 160W x4 @4Ω or 200W x4 @2Ω, bridgeable to 400W x2 @4Ω for subs
• Clean signal path with noise floor under 140μV and input sensitivity from 0.75V to 8V, works with RCA or high-level speaker inputs
• Adjustable HPF/LPF crossover from 50Hz to 250Hz plus full-range mode, REM turn-on lead, and auto-on from high-level input for head units without RCA
• Compact 186 x 101 x 44.2mm body with a CNC aluminum heatsink, runs on any 12V DC vehicle, fits under a seat or in the trunk
• Guards itself against overheating, short circuits, over/under voltage, and reverse polarity, with PWR/PRT/CLIP LEDs to show status at a glance
• Automotive-grade Sumida inductors and Omron relays inside, plus 0.5W standby draw and low-voltage cutoff at 8.8V to protect your car battery

Specifications

Brand

Fosi Audio

Model

CA30

WEIGHT

1.06KG

Channels

4

RMS Power

160W x 4 @4Ω, 200W x 4 @2Ω; 400W x 2 @4Ω (Bridge Mode)

BASS BOOST

0 ~ 10dB (50Hz)

EFFICIENCY

93% @4Ω (Max >88%)

INPUT TYPE

RCA Low-Level, High-Level

MOUNT TYPE

Under Seat/Trunk Mount

OUPUT TYPE

Speaker Output

NOISE FLOOR

<140μV

Internal Fuse

30Ax2

RMS Power@2Ω

200Wx4

RMS Power@4Ω

160Wx4

Damping Factor

≥140@100Hz

LED Indicators

PWR (Blue), PRT (Red), CLIP (Orange)

CROSSOVER MODES

HPF, LPF, FULL Pass

CROSSOVER RANGE

50Hz-250Hz (HPF/LPF)

OPERATION CLASS

Class D

Auto-On Function

Yes (High-Level Input)