Focal
FPX 4.400 SQ
400W RMS 4-Channel Amplifier

$699.99
Focal FPX 4.400 SQ
Focal FPX 4.400 SQ Focal FPX 4.400 SQ Focal FPX 4.400 SQ Focal FPX 4.400 SQ

Overview

The FPX 4.400 is a very compact 4-channel amplifier with a power of 4 x 70 Watts RMS at 4 Ohms. Offering a 4-/3-/2-channel mode, stable at 2 Ohms and equipped with an active crossover for each pair of channels, the FPX 4.400 is the most “sound quality” model in this range. Thanks to its very comfortable power, this is the ideal amplifier for powering front and rear speaker drivers, or for hi-fi installations with a 2-way kit in the front and a subwoofer. The 2-/4-channel input modes ensure compatibility with head units only equipped with a pair output lines. The power and musicality of this amplifier will ensure you get the best out of your high-end speaker drivers from our Performance line.

  • 4-/3-/2-Channel Class ABD amplifier
  • 2-/4-Channel Input Modes
  • Stable at 2 Ohms
  • Active Crossover for each Pair of Channels
  • The FPX 4.400 measures 12 23⁄64" x 6 57⁄64" x 2 1⁄4" (31.4 x 17.5 x 5.7 cm)
  • An Audiophile and Versatile Amplifier
  • Optimised Heat Dissipation
  • Extremely Versatile
  • Remarkable Power/Performance/Price Ratio

Optimized Heat Dissipation

For an amplifier to provide high power and musicality, efficiency and heat dissipation are two essential qualities. In order to optimise these aspects, FPX amplifiers have been given a thick aluminum chassis.

The distribution of the components on the motherboard was also carefully researched to optimise the cooling capacity of the chassis. The careful selection of each Class D component (switching power supply, oversized toroidal transformers and high-quality capacitors) has made it possible to create powerful but ultra-compact amplifiers offering excellent musicality.

Extremely Versatile

Thanks to its 4 x 70 Watts RMS at 4 Ohms and a Class AB amplifying technology the FPX 4.400 is an ideal solution for a wide range of uses.

In bridged mode, it delivers 2x200 Watts RMS at 4 Ohms, enabling it to power a significant subwoofer channel with channels 3 and 4. It is also stable at 2 Ohms (4 x 100 Watts RMS) so it can also be used for powering different types of speaker drivers. In order to perfectly power the speaker drivers, each pair of channels is equipped with an adjustable active crossover from 40 to 5000 Hz: high-pass, low-pass or wideband. The 2-/4-channel input modes ensure compatibility with mid-range head units only equipped with a pair output lines.

Specifications

Channels
4
Amplifier Class
ABD
Power
4 x 70W RMS @ 4Ω
Bandwidth
10Hz - 22kHz
Total Harmonic Distortion
0.04%
Signal/Noise Ratio
>77 dB (A)
Configurable Filters High Pass / Low Pass Filter
40Hz - 5kHz
Mirroring Mode
4 CH / 2 CH
Protections
Short Circuit
Low Impedance
Reversal of Polarity
DC
Power Drop
Heat Protection
Dimensions
12 23⁄64" x 6 57⁄64" x 2 1⁄4"
314 x 175 x 57mm
Weight
8.16 lbs
3.7 kg
More Information
Brand Focal
Amplifier Class Class D