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The FPX 4.400 SQ is a very compact 4-channel amplifier with a power of 4 x 70 Watts RMS at 4 Ohms. Offering a 4 or 2-channel mode, stable at 2 Ohms and equipped with an active crossover for each pair of channels, makes the FPX 4.400 SQ very versatile and suitable to a range of system designs. Thanks to its high 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 high power and musicality of this amplifier will ensure you get the best out of your high-end speaker drivers from our Performance line.