The Naim user guide as seen by me, an ex-Naim user (who will probably going back to Naim) Leave the damned things "On" at all times. D'ont worry about the heat, the WHOLE casing acts as a heat sink. Dead silent. Always ready. Good pacing, extremely detailed. Soundstaging may be a weaker point, but overall balanced sound. Even the smallest Naim integrated is an incredible bargain. That's Naim for you. Plug it in. Forget about it. Enjoy the music.