I have heard the Quad ESL 63 and the WAMM in the same room on different occaisions. I have heard several systems in the $20K and up range including sound labs, ML statements, etc. The WAMM is on a different level-the only thing I have heard that even approaches it would be the IRS. Listening to the WAMM play a classical piece by a string quartet was the ONLY time I have thought I was actually listening to a live event when listening to a hifi system and this, by the way, was in 1986. I can only imagine what the current version must sound like, but there are probably some other challengers that have surfaced over the years. By the way, the grand slams I heard were a disappointment.
