Agear....i use the Ultra 5s...4 of them ..under my Tidal Contriva Diacera-SE speakers and they make a sigificant improvement in the sound as compared to the stock footers. i have a friend with Tidal 'Piano Cera's ' and he uses the Ultra SS under his and they, too, make a big improvement..i think there probably is some good, sound, science behind their developement.The USA distributor for Tidal now uses the Ultra 5s with his Tidals at the shows..
