Stack Audio – AUVA 100 Isolator (Set of 8)

Absorbing vibrations reveals more music
The Stack Audio AUVAs help bring your music to life. The AUVAs are designed to do two things: hold loudspeakers rigidly whilst simultaneously absorbing vibration. They combine the best qualities of both spikes and isolators – without the drawbacks of either. Designed to be used on either hard floors or carpets; with the AUVAs direct sound waves are more precisely focused and cabinet vibrations are dissipated before reaching the floor.

Vibrations can distort the sound we hear, causing certain frequencies to be emphasized while others are masked. The AUVAs tackle this issue by preventing vibrations from interfering with the speakers performance.
AUVA technology

Enclosed within the AUVA’s precision machined aluminium cases are multiple cells containing particles such as tungsten powder. Vibrations excite the particles, creating movement and collisions that dissipate the energy virtually instantaneously. Think of it like throwing a ball into soft sand – the sand absorbs the energy from the ball preventing it bouncing. This patent pending technology enables the AUVAs to remove masking vibrations over a wide frequency range, revealing more of the clarity in the musical recording.

Managing speaker energy
Effective management of speaker energy is crucial for achieving clear and precise playback. By controlling unwanted resonance, we can significantly enhance sound quality, leading to a more accurate and immersive listening experience. While spikes and compliant isolators are commonly used to address vibration, they each come with their own drawbacks.
Spikes
Spikes are often favoured for their ability to anchor the speaker to the floor; however, they can act as conduits for vibration. As energy travels downward from the speakers, it reflects back through the spikes, creating unwanted resonance that disrupts both speaker performance and room acoustics.
Rubber (Compliant Isolation)
Compliant solutions like rubber isolators absorb vibration through movement. While this method is generally more effective than spikes at absorbing vibration, speakers require stability. Excessive cabinet movement can disrupt performance, skewing the soundstage and diminishing playback accuracy.
AUVA
The AUVAs maintain structural rigidity while dissipating energy through its unique multi chambered particle impact dampening system. This innovative approach results in clearer sound, enhanced detail, and improved spatial accuracy, allowing listeners to experience music with greater transparency and realism.

Set of 8 Isolators