Plinius Audio Anniversary Integrated Amplifier - Manual (Page 17)

16 PLINIUS ANNIVERSARY
WARM-UP PERIOD
You will find that the Anniversary Integrated Amplifier will become noticeably ‘purer’
in sound after being on for a period of time. We usually recommend waiting at least
24 hours before expecting the best quality of sound reproduction from your amplifier.
Also, as the Anniversary Integrated Amplifier uses very little power while on, we
suggest leaving the unit turned on so that it will always be at its sonic best.