For ss amps, TNT Audio has a great article explaining how to set the bias of your amp. Google 'adjusting the bias of your amp'. But it doesn't talk about mosfets, only bi-polars. Mosfets are adjusted by removing a rail fuse and putting an ammeter (setting your multimeter to mA) across the contacts. One channel at a time. The fuse contacts, that is. Not the mosfets. Ideally both channels at the same time with separate multi-meters.
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