on 11 March 2012
At first i was really pleased with this item as it arrived promply and looked sturdy enough. but once pluged that's another story as there is a massive difference between a speaker connected with this extension and a 'normal' one. No lag in sound as much as I can hear but big volume difference. It's not a faulty cable since I got 3 like that, same problem.
Also I tried with a 10 meters other cable I've got and the volume is much better on the longer one. Still not as good as without any extension but an acceptable difference.
In short, do not buy this product unless you can use it on ALL your speakers (just crank up the volume a bit then) or you want to spend some time balancing the speakers with a software.