Don't laugh at the Pioneer name too loud. I am very surprised and very delighted to say that my recent purchase of some of the big HPM-200's are right up there with my former 4333a's. I am not even running my ideal amp(Nikko Alpha VI) on them as I was on the JBL's as it is in the shop. Just using a AUD-11 mkII which is 130wpc. It is a very good sounding amp, but I can't wait to wake these somewhat rare giants up with the big Nikko. Not a slam to JBL lovers as I have had many and will continue to have them from time to time.