chooby, this is just the scenario I seem to have. i bought a sony mic ECM-DS30P and when plugged straight in it seems a lot better. not perfect i must say, but much better. it's not much use like this though is it? (given the machine noise it picks up). and once i add the extension lead, it's heaps worse. i am going to try to find a better quality lead as this is just a generic $5 one. this may have caused the trouble in the first place : today i was looking at the first plug i used (again, very cheap) and it's a monster. compared to the nice gold plated sony mic plug, it's bigger, rough and not even really the same shape. i think it' wise to avoid this stuff.