Aaron - most Essences have a filter, but no Q switch, which means the 8 dB boost at the cut-off frequency is always engaged. If you leave the filter wide open, that might explain the excessive brightness. (Earlier Essences are often all-maple, which would also account for some of the brightness.)
As an inexpensive modification, you can install a Q switch, which allows you to disengage that boost. You could also opt for a 3-way switch to give you a milder boost option - my Spoiler has a 0/3/6 dB Q switch, which offers enough noticeable variation to keep me happy. Playing mine with DR HiBeams - got a little frustrated with the stiffness of the LoRiders.