I would argue that Nelson Pass, especially with his First Watt range might be the most inconsistent. He has become the “Baskin Robbins” of amplifier manufacturers with a variety of flavors, some of which seem to change every month.
Some amp manufacturers have offered factory configurable or even user changeable bridging capabilities, taps, topologies, bias options and feedback controls on specific amplifier models.
Some amp manufacturers have offered factory configurable or even user changeable bridging capabilities, taps, topologies, bias options and feedback controls on specific amplifier models.