Upgrading wall outlets

I used the FIM in place of a "Hospital Grade" receptacle on my two dedicated lines, I was expecting a possible slight improvement but it was a considerable one. By "Logic" no power cord or other change you make should produce a difference given the distance the current travels before it gets to your house. But it makes a difference to my ears and there are explanations why this should be so; there are many threads on this topic.

Al , they do make a difference. At least if you have dedicated lines. Like the poster above I put one on a standard line and didn't notice much, if any, change. I had not expected much change on my dedicated lines but it was in line with 883Dave's experience. If you have dedicated lines you should try them, if you don't you should get them if at all possible. Makes more difference than almost anything else. Stan

My house is about 12 years old and at least average in construction quality but I was struck by the difference in the quality of the wire I had installed in my dedicated lines and the wiring in the existing lines which I saw while while installing the new receptacles. Get as heavy a wire as possible installed if you do have the lines put in. You can put receptacles in yourself as long as you exercise caution; trip the main circuit breaker and plug a lamp in if you don't have a meter to make sure the current is off. Lines are best left to pros unless you are an advanced DIYer.

Coming up on 50 years in audio, I wish I had written down every time an engineer, usually not one in audio, has explained how some effect could not possibly exist. I am sure a chemist could prove by analysis that there is no significant difference between wines and those who claim the opposite are fooling themselves. As for me I agree with Ivor Tifenbrun that " If you haven't heard it you don't have an opinion".

I was only saying that the opinion of someone who had never listened to something should be given its proper value. By coincidence I was looking at the HIFICHOICE for this month in which Paul Messenger points out that in regard to outlets:" I've still found it possible to make quite dramatic changes in sound quality , using numerous usually mutually exclusive techniques of wildly varying prices." This has been the experience of most of us WHO HAVE ACTUALLY TRIED IT. Of course, we simple folk lack the wisdom of those who are able to know without actually having to go to the trouble of listening themselves. They live in the world of Aristotle and not of science where pure logic can tell you what will happen without messy experiments.