Lifters ForGetting Cables Off The Floor, Worth It Or Snake Oil

FWIW my experience is that the vibration control effect is more important than the dielectric. I recently upgraded from Shunyata Dark Field Elevators V1 to V2. The latter have an elastic suspension. On my long (10 meter) interconnects the impact of the suspended lifters is noticeable. Greater clarity and ease, without them the system sounds slow and congested

http://www.shunyata.com/index.php/products-vm/accessories/df-ss-detail

personally I have never liked the heavy porcelain ones my alternative (which I use on the long runs providing power to my actively shielded cables) are the simple Doug Fir ones from Cardas. The Shunyata are expensive but you could come  with a DIY alternative with a similar elastic suspension

Great recommendation for those looking for a super low cost option for risers. PaperSource (and no doubt other crafty type stores) have on sale card 3D letters about 12" tall. The M is ideal as a cable riser. It can be drilled and part filled with shot for added stability and being card it's easy to fit elastic for an extra boost. In my opinion card sounds better than wood or ceramic as well. I'm scooping up all the ones I can find as they're ideal for some of my loose floppy cables

You can use the R's as well threading through the gap. I bought a couple of these today and they are quite stable

@audiopoint if you take a look at my virtual system https://systems.audiogon.com/systems/5707#&gid=1&pid=31 (the V trace in the set of the graph traces from the accelerometers in my Herzan platform) you will see clear and compelling evidence of seismic activity (in this case most likely road noise and construction) and the effect of eliminating it. In this instance the benefit is felt for the turntable but I have all of my equipment isolated in a manner that addresses this insidious (and readily noticeable once you hear it’s absence) source of interference.

I have no particular axe to grind as to what method you use to address low frequency interference but denying it exists, or that its impact is audible is just plain wrong

@audiopoint the time base on the scans I posted is 160mS hence the frequency of the main signal visible in the first scan is 10-12hz (depending on whether you think there are 1.5 or 2 cycles displayed) so I suspect this is not a power supply issue. Nevertheless cognizant of the issue you raise the manufacturer does offer an external power supply in order to eliminate this possible source of additional interference - or as Herzan put it "EMI noise and heat"

my room unfortunately is of typical domestic construction (frame on slab) and my wife and I can feel the whole house shake with passing traffic and other subsonic activity. Perhaps other situations would not be as sensitive but I have found all of my equipment benefited from some form of isolation from the floor (be it via springs, roller balls or active isolation).

in terms of where the cognoscenti are at the platform of the moment is the Stacore combining pneumatic isolation and rollerballs. You may find this thread of interest
http://www.whatsbestforum.com/showthread.php?23315-A-world-first-Passive-v-active-isolation-platform...