This is THE powercord I want :



http://washingtonpost.com/wp-dyn/nation/A47809-2001May18.html
ikarus

Showing 2 responses by liguy

Frap and Redkiwi, I came across something really interesting just the other day. My wife and I went to audition a Rowland Research 112. The gentleman who auditioned it for us was selling it so he could start a family. He had quite a setup but I was interested only in the 112. The amp sounded splendid in his setup and I saw quite a few good power cords sitting in a box and asked if we could listen again with a different PC. We did this a few times allowing for rewarming of the amp. There was very little discearnable difference between the PC's. Was my wife and I loosing it? I know I hear a difference with my amp at home. After a while we decided to make an offer on the amp which unfortunately was not high enough for the gentleman, so we went home. On the way home it really bothered me as to why there was no difference, then it hit me. The Rowland has a switching power supply. The AC from the wall is literally being regenerated. All the anti EMI and Noise stuff built into the PC goes out the window. If you have ever seen what feeds the rectifier half of a switcher on a scope, you would be suprised how clean the DC can become with a good filter like the Rowland has. The moral of the story is that not all is as it seems. If I had a conversation with this fellow before we auditioned the amp and he said there was no difference in power cords, I might have told him he was deaf and it was good he was selling his stuff. I just thank goodness I heard it first, kept my mouth shut and learned something.