My first helmet SM PL30 made rug because of a mini jack which seemed (correctly) weakling after a year of abuse. But in SoundMagic are so strong that they put a new type of mini jack without much stronger I asked them, a novelty which I discovered during this second order. I could point me to anything but technical qualities are there with a nickel and its fairly neutral as I like, what led me to reiterate. Only small reservation, the knobs on each earpiece to adjust the bass: it is necessary in my opinion to avoid touching as it looks like rudimentary air system. Personally, I tried to do it on my first pair after she passed away, I have not even managed to move despite efforts worthy of a bovine.
