s2 -perfect size my 4.1 soundbar with no up firing speakers -I can hear the difference as soundbar is low ---I also use s4 for my center channel--and s6 for rear speakers
I have a standing desk, and two small monitors that fit at the back edge of the standing desk's platform. I needed something that would tilt the monitors to face me while I worked.
These Kanto stands fit perfectly in the available space, and tilt my speakers at an angle where they sound great.