【Focal FPX 4.400 SQ｜Class AB 4ch Power Amplifier】

This is a 4ch power amplifier suited for those who want a bit more thickness and dimensionality in the sound of their factory audio, or those who feel that speaker replacement alone isn’t quite enough.

Focal FPX 4.400 SQ is a power amplifier that uses a Class AB design. While preserving the delicate nuances and character of the sound, it also has the power to drive your speakers firmly. It makes it easier to naturally perceive the information embedded in the music you always listen to—such as the fine details in vocals and the positioning of instruments.

With a 4ch configuration, it can drive the front and rear speakers together, and it also supports systems that play front 2-way setups via multi-connection. Another key point is that you can use crossover functions for high-pass, low-pass, and band-pass to align how the sound transitions together according to your vehicle and speaker configuration.

An amplifier isn’t a product that will produce the same sound just by installing it. Your impression will change depending on how you handle the power supply and wiring, the installation method, the combination with your speakers, and the final tuning. If it were me, I wouldn’t decide on an amplifier in isolation; I’d review your current system and how you usually listen, then think about where using it will provide the most noticeable effect.

This amplifier is also well-suited to requests like “I want a sound with plenty of headroom even when I turn the volume up,” “I want the vocals to feel a little closer,” and “I want to drive the front 2-way setup properly.” Since the recommended connection method varies depending on the vehicle model, the factory system, and the speaker configuration, let’s decide the direction together while listening to the actual sound.

Main Specifications

【Basic Information】
Product name: FPX 4.400SQ
Brand: Focal
Type: 4ch power amplifier
Amplification method: Class AB

【Rated Output】
4Ω: 70W × 4ch
2Ω: 100W × 4ch
Bridge connection, 4Ω: 200W × 2ch

【Crossover】
High-pass
Low-pass
Band-pass
Supports separate adjustment for front and rear

【Structure / Design】
Equipped with high-performance transformer and MOSFET
Aluminum body
Structure designed with heat dissipation in mind

If you want to consider a way of using it that suits your car—down to the sound direction and installation method—please consult us while checking your current audio configuration. We’ll organize a system that’s reasonable and won’t overreach, so you can enjoy music comfortably in your important car.