Klipsch Cornwall IV

I think the IPad was most likely controlling a music server, but yes they should ask what you would like to listen to and leave you to listen without any interruptions. You are the customer, the priority, the one paying the bills. My experience is that for years many shops were focused mostly on installations to get by. It seems the more recent surge in people getting out to listen to 2 channel has them a little rusty. Hopefully we all get into our groove again.

Don offers good advice. I would never consider pairing klipsch heritage speakers with SS amps, although some do. I am listening to Deep Purple "Made in Japan" right now with 14 tube watts much louder than I probably should and it sounds awesome. Seek out another audition or try to get a pair in your home. 

Oz

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