I loved my LS9’s. Perhaps some of Danny’s best work. They are very room sensitive though. The bass is beyond powerful. I switched to a Lyngdorf integrated amp a few years back because my room can be difficult.
I would still have the LS9’s if I had this amp back then. It would have made them perfect in the bass. The only thing I ever owned that compared was the Ephipany 20/21’s. The 20/21’s have stunning highs and separated choir vocals better than any speaker I have ever heard, but they didn’t have quite enough low bass.
Playing good cello, brass and vocal recordings through the LS9 was just breathtaking. Resolution to die for. They are special.