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Can I use one Fusion amp for Stereo purposes?
All Fusion Amps are designed for mono 1, 2, or 3-way configurations. Stereo use with a single Fusion Amp is not possible. However, it is possible to sum the left and right channels (L+R) in one Fusion Amp, which can be used for applications such as a center speaker in a multi-channel setup.
https://www.diyclassd.com/FAQ-Hypex/Fusion-Amp-Family/Can-I-use-one-Fusion-amp-for-Stereo-purposes