Marakenetz, my reply was directed at the comments by Sean. However, even if your electronics are left on 24 hours a day, UNTIL music passes through all the capacitors, interconnects, speaker cables and connectors (and don't forget phono cartridge warm up for us analog guys), the sound will not be 100%.
This is absolutely true for my system, it requires music to make it right. Minimum thirty minutes and better still after a couple of hours. Even when everything has been powered up for 24 hours continuously.
This was true for the ProAc Future Ones I ran while my Ultimates were being rebuilt, so this experience is not exclusive to the Soundlabs or electrostatic speaker design.
If you have not experienced this, then I would attribute it differences in systems or differences in our sensitivity to the break in phenomenon. I was told by Steve McCormack that I am the more sensitive to "break in" than any person he's ever met. At one time, he and I shipped equipment back and forth, evaluating part swaps to confirm upgrade paths.
I am responsible for calling a bad cap choice in the Counterpoint (SA-9) Magnum, which ultimately improved the extreme deep bass frequencies.
Later, when the Aesthetix Io went into production, I was given the opportunity to evaluate it. I identified an EQ error in the RIAA, without any tools, just knew it was wrong from listening.
Jim, the owner of Aesthetix is still amused by this when the subject comes up. Some of us are ultra sensitive to these things, and I don't claim to have special hearing. It's just a sensitivity that developed on it's own from long term listening.