Yes, I've heard about the planetarium...but I have a pretty small room, and I don't think it will help me.
Regarding your initial point (quads are so fine) I certainly agree with you. This is an amazing speaker if matched to the right amplifier. That said, I like it much better with the Gradient SW-63. If you listen to a lot of Jazz as I do, and like to hear the bass among other instruments, there is no comparison. The SW-63 are pretty tight, fast, and go down to at least 30Hz. The reason of my post is that I consider the combination ESL-57 + Gradient SW-63 to be superior than the Quad only...so I wondered whether the SW-57 is an even better match. Additionally, the SW-57 is smaller and looks nicer given that it was designed to fit perfectly the ESL 57.
Regarding your initial point (quads are so fine) I certainly agree with you. This is an amazing speaker if matched to the right amplifier. That said, I like it much better with the Gradient SW-63. If you listen to a lot of Jazz as I do, and like to hear the bass among other instruments, there is no comparison. The SW-63 are pretty tight, fast, and go down to at least 30Hz. The reason of my post is that I consider the combination ESL-57 + Gradient SW-63 to be superior than the Quad only...so I wondered whether the SW-57 is an even better match. Additionally, the SW-57 is smaller and looks nicer given that it was designed to fit perfectly the ESL 57.