purchased 24/12/2008 - Price interesting (in Heartbeat) - no other models tested - use in concert - on the other hand at the end (already) 3 concerts, the problem of connectivity. I had to stuff all the records for (re) making all welds (60 in all) and the surprise devisanrt XLR: carnage, the son that touch every corner ...... so I have everything redone, a priori it works but I do not know for how long