Klipsch Cornwall IV

Yes, I am sure the iPad was controlling some sort of server, but again, it was probably a Mac or some other decent grade thing, but maybe not top shelf.   My experience with the Cornwall IV and the X5 is that they are up there in rarified air.  They are that level of speaker.  Of course there are probably better speakers, but both of these are very good.  Every time I change a tube I can easily hear it in either speaker.  Any subtle change upstream can be heard.  So if I am demoing these speakers I am setting up a KILLER system in front of them.   They are capable of micro detail and very 3D imaging.  My opinion is that if you put a SS amp in front of them you will not hear that.  Of course you want the customer to be able to play whatever music they love to evaluate them as well.   I listen to a lot of poor recordings I love anyway, but I listen to my set of 50-100 tracks of all genres to evaluate the gear I build.  I would never use certain tracks to evaluate a pair of speakers.  Your list of tracks would be different than mine:)

3-5 days. Looking for a few recs on dimensional, gold tone compared to silver tube amps. Single ended and up to maybe 60 wpc. Thanks!

Avoid single ended if you want tight bass.  A really good push pull amp has every bit of the magic of a single ended one

7 days. They must be pulling them up the Delaware by mule like they did when they first came out. Will update once I get them going.

One initial impression that comes to mind with these is maturity. These speakers having a way of playing with stature and solidity regardless of the genre. Haven’t had a chance to sit and listen but will make time over the next few days.