It took well over 300+ hours for my REGA Isis valve cdp and REGA Osiris integrated amp to settle in .... the actual burn-in process was longer but less pronounced farther out on the time vs performance curve. At 300plus hours, that timeline point was something of a common threshold that apparently is not unusual for many different brands.
Why does it take so many hours to brea in arc preamps and amps?
I recently purchased a like new ARC 5 SE pre amp. The unit had less than 200 hours on it. Everything I have read states that ARC preamps take up to 600 hours to fully break in. Why is this so and what improvements can I expect to hear as the unit accrues hours?