Background to the music got just a little "blacker" (i.e., the noise floor seemed to lower a little) and the images in the soundstage seemed more focused. The Sink does a nice job, as does the IsobaseK, of isolating from vibrations coming from the floor through the rack, but the IsobaseK is better at handling whatever vibrations are caused by the unit sitting on top of it (this makes it exceptionally good with transports and CD players). I imagine it might be even more effective with the 24MXL than my upgraded 34, as you have the power supply in the 24MXL chassis, instead of in a separate box like with my unit. I wound up using both under it for a while before I needed to increase my audio slush fund and sold the Sink; the difference between using both and using the IsobaseK by itself was negligible in my system.