The surprise factor of an ultra small speaker talking big can be and probably is an element in the wow factor experienced by the OP. Admittedly, to get some great timbre and believable music from such a small package is quite remarkable. The price-well if you look at the offerings on this site 3.6K isn't otherworldly. Gawd is just saying, in his view, they outperformed their price tag. We all listen to each other in attempting to dig through price/valuations etc.
charles 1dad, I have two sets of Zu speakers. They must be dialed in and other factors must be dealt with, tubes etc. But I assure you they have a 'they are here" quality and can be balanced to give an eerily real presentation. In a hotel with two days prep? Maybe not.