I’ve measured the power consumption on my Essence and it’s not as bad as the spec indicates. Though one unit is rated 350W at idle, I measured more like 280W. If you use Green Bias (ok for casual/background listening and standby) you can drop that down to 105W. The max power consumption is really just a peak figure, and overall it probably uses about the same or slightly less power than a pair of, say, Pass XA60.8’s.