[IMG]http://www.hi-fi-accessories-1.com/images/ringmat_feet_350.jpg[/IMG] Never tried them because most of my kit tended to be heavier than 13kgs. Cost £75 yours for [b]£35[/b] Publicity blurb below RINGMAT FEET control the mechanical and electrical vibrations which otherwise contaminate the sound quality of hi-fi and the sound and picture of audio visual systems. These are natural by-products of any hi-fi or audio visual setup, which cause loss of information and signal phase distortions. RINGMAT FEET minimise the effect of vibrations where components are placed upon shelves or other forms of support, including many types of anti-vibration platform. You'll notice the difference immediately. Just place RINGMAT FEET under each foot of a relevant component and hear your playback come to life.