Further information: For a time these little bookshelf speakers were 'the' entry level speakers to get - they were the best value sub-$500 speaker on the market. They have been used occasionally as my desktop system in a my office. Fed with the with the right power amp, they shine. Quite a few of my friends are highly musically/ audio literate were shocked by the price-quality ratio. I've included a couple of reviews to help you get a good sense of what these are like.
https://www.stereophile.com/standloudspeakers/1205usher/index.html
https://darko.audio/2011/01/usher-s-520