I recently was given a Kenda 12" children's bicycle inner tube by a local dealer to try under my Rega turntable. I took it home, thinking at the time it was a lot of high-end audiophile dealer hoo-ha, but when I tried it, I found that was quite an improvement in the sound of my system. When placed directly under a turntable, the improvement is better transparency and inner detail, more defined bass, improved "air" and spaciousness, and overall, a more natural presentation of the music...more "musical" as it were. I've removed it from the Rega numerous times, and put it back, and every time I replace it, the sound of the sytem improves. It also works quite well under components e.g. amplifiers, preamps, phono stages, etc. The biggest difference I've observed is under the turntable, however. I suggest folks try it....these inner tubes only cost three or four dollars, and really can make an improvement to the quality of sound from yours system.