The FPX 4.800 amplifier is a compact yet powerful device, designed to deliver high-quality sound across multiple channels. With a power output of 4 x 120 watts RMS at 4 ohms, it offers impressive performance for its size. The amplifier's configuration is highly flexible, allowing operation in 4, 3, or 2 channel modes. This versatility is further enhanced by its active filtering feature, which is available for each pair of channels, allowing for precise control over audio output. The FPX 4.800 is recognized as the most adaptable amplifier in its product line, making it a popular choice for those seeking both power and flexibility in their sound systems.

Regarding additional technical details, I do not have any further information beyond what has been provided.