Why would anyone turn the Aurender off. Your clocks cool down then. To me, the N20 only sounds good after a day or so being powered on, for the clocks to fully stabilize. So I never power off my N20. Yes it uses a bit of power, but not enough to make it a sustainability thing (and I've got plenty of solar panels anyhow). Just leave the Aurender always on. To me, this request is unimportant.