OK, I took on board all the suggestions that came up from round 1 of the tests. These clips are only 15 seconds long, they are not overtly clipped, there is no limiter in the chain, and they are as identical as I could make them in terms of start/stop times and levels. There are two zip packs, one where the clips are in FLAC format and the other where they are in AIFF format. For some reason WAV encoding was not working for me this time, I don't know what went wrong with it. Here are the links: http://www.bongomania.com/FLACtestClips.zip http://www.bongomania.com/AIFFtestClips.zip The arrangement this time is that there are three clips, named "control", "trackA", and "trackB". Of A and B, one of them was recorded using the same power cord as the control, while the other was recorded using a different power cord. One of the power cords is an ESP MusicCord PRO, the other is a super-cheapo 18 AWG standard cord of the same length as the ESP. None of the clips are copies of each other, nor are they copies of the clips I used last time. They are three brand-new separate recordings. So what you will do is listen to the control clip, then listen to the other two clips, and decide whether A or B sounds identical to the control. And that's the wording of the poll: "Which clip sounds identical to the control, A or B?" There is no room for carrots or "I don't care" responses in this poll--if you don't care, don't bother posting. I will reveal the results in a few days, maybe a week, depending on how this test goes. So, ready? Here we go!