Focal Inside Amplifier Impulse 4.320

Focal IMPULSE 4.320 – Compact 4-Channel Digital Amplifier for Powerful, Clean Sound
Unlock the full potential of your car audio system with the Focal IMPULSE 4.320, a 4-channel digital micro amplifier engineered to bring clarity, power, and dynamism to your sound. Standard car radios often lack the output to drive speakers effectively, leading to distortion and flat performance at higher volumes. The IMPULSE 4.320 solves this by delivering a solid 4 x 55W RMS (CEA standard) or 2 x 160W RMS bridged, ensuring your speakers perform at their best.

Thanks to its ultra-compact design and semi Plug & Play installation, this Class D amplifier integrates seamlessly into any vehicle without taking up trunk space. With exceptionally low harmonic distortion (0.0002), the IMPULSE 4.320 guarantees high-fidelity sound reproduction, making it the perfect companion for Focal Integration speakers or any factory system upgrade.

Whether mounted discreetly under a seat or behind a dashboard, this amplifier provides a dramatic improvement in sound quality, headroom, and musical dynamics—all without the hassle of a complex install.

Key Highlights

• Ultra-compact 4-channel digital amplifier
• Power output: 4 x 55W RMS / 2 x 160W bridged
• Class D efficiency with extremely low distortion (0.0002 THD)
• Semi Plug & Play installation – no major modifications required
• Pairs perfectly with Focal Integration speaker systems
• Lightweight, compact design for flexible mounting options