I can tell you my v2 tweeters were breaking up on my QS8s and my M80 with concerts and PLII music. I always thought it was the recordings. When I got my v4, all that breaking up disappeared and I was left with beautiful sound.


A-LFR/1000-8 & 2/500v4x2
1000-3,1500-3
100,160,QS10x2,800,M5x2,M2/3/50v4
Air Force, Freedom
had v2