I understand it is typically recommended to keep Bartok (as well as other DACs) on or in sleep mode when it is not in use, in order to avoid taking long time to get back to the optimal operating temperature if it was powered off. However, I typically do not feel comfortable keeping the toys on or in sleep mode when not in use, not due to power consumption concern but because sometimes my neighborhood has voltage spike and/or sudden power outage. Although my power conditioner has protection, I do not feel comfortable keeping them connected to power all the time. With that said, I powered Bartok off, and when I turned it back on, operating temperature went back up to 37c +/- pretty quickly. If my observation is correct that optimal operating temperature is easy and quick to get back to, it is not necessary to keep the unit on 24/7. Am I right on this?
By the way, what are the differences between powering the unit off using the power button in the front (holding for 5 seconds) and the power switch in the back?