I have a pair of cs2.3's. Had them for the last 20 years. I upgraded the coax mid/tweeter to the two magnet unit, this was pivotal in me keeping them, as I had a heck of a time taming the brightness. A tube preamp helped considerably also. As per most Thiel products, very high resolution and lack of coloration. Makes poor recordings sound poor, but good recording sound fantastic! I have a high current amp (Bryston 4bsst). Not sure of the differences between 2.4's and 2.3's. Make sure you are sitting at least 9-10', as the drivers need the distance to blend appropriately. After 20 years, got the bug to get a new pair of speakers, ended up buying a pair of Tekton Moabs, still waiting for delivery, Eric is very busy! Hopefully it is an upgrade over my Thiels, as the return shipping cost will be considerable.