Quote Originally Posted by FLZapped
How do you know?

Sorry, but this is just not true, which is why there is so much testing using such a method. To make sure we are on the same page, when I say rapid switch, I mean two devices switched by a mechanical method - as opposed to someone plugging and unplugging cables.

I have also participated in numerous tests and I can assure you, the results were anything but null.....we weren't testing cables, but where there were differences, they stuck out like a sore thumb using rapid switching. Listening to each device seperately would have certainly yielded more nulls.

-Bruce
I'm not contradiction the need for long term listening; this is especially important form establishing which sound is "better" (or a least preferable). However my experience is also that anything I hear in the long term, I can also hear in the short.

But though the switching might be quick, pinpointing the specific differences can take a long time: e.g. once I spent 3 hours listening to segments no longer than 5 minutes and some as short as 20 seconds before I could articulate the differences; (granted, this was using the slower cable swapping method).