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Essence Power
Bias setting is changed (toggled) with the Bias switch at the bottom, right side of the Essence.
See figure 3 on page 13.
Figure 7. Essence in Bias Low
Bias Low is active when the lightbar is all green. Essence runs in Class A/B in this setting.
Figure 8. Essence in Bias High
Bias High is active when the lightbar is all red. Essence runs in full Class A in this setting.
Changing Bias Setting