The Ultra retains the following features of Symposium's exclusive energy absorption design:

  Density-ordered constrained-layer construction 

  Linear energy dissipation with low reflection to the component

  Solid platform with no "bounce" for superior bass performance 

  No leveling problems 

  No leakage problems 

  No practical weight limit 

  No tuning or adjustment required- works with all components 

  Performance independent of its support surface 

  Ideal interface for Rollerblocks, cones, and all footer devices. 

  Resonance-free isolation of upper 9 octaves of the audible range 

  No interaction problems with tuned suspensions of turntables 

  Ideal for use on top of low frequency isolation devices 

With Turntables

An Ideal Ground for Analog Energy

The Ultra is an excellent support for analog turntables, because it provides a nearly ideal mechanical ground without introducing any spurious reflections or resonances. 

If you have serious low frequency "footfall" problems, however, you must combine the Ultra with a low frequency isolation system to eliminate low frequency footfall interaction, 

since the Ultra is designed to conduct energy at lower and lower frequencies. 

However, if you're serious about getting the best sound possible from your analog system, consider an Ultra directly under your turntable - which will "clean" up haze, 

improve bass, and provide added authority to your playback. 

Even if you already have a low frequency "decoupling" device (that is, an extremely low frequency isolation device), the addition of an Ultra between it and your turntable will make significant additional improvements. For a more in depth discussion of the technical aspects of using Ultras with turntables