I’ve almost sold these cans five or six times but listening to them now I have to conclude I must be crazy,especially for the price I was asking! These are almost as good as anything I have..out of a iPhone 6s
They scale up well with better electronics. I used an iPhone to burn mine in, and afterwards, listened critically and found the sound very much to my liking. When I then used my AK240SS, the VI sounded much better.