The Stillpoints Ultra 5 S is a precision‑engineered isolation device built around five pockets of Stillpoints’ patented technology, providing exceptional mechanical energy dissipation for loudspeakers, amplifiers, and premium audio components. When four Ultra 5 S units are placed under a loudspeaker, the system engages twenty technology pockets, dramatically reducing resonance and unlocking a cleaner, more transparent acoustic presentation.

The Ultra 5 S incorporates two threading options for maximum flexibility: a 1/4‑20 female thread on the flat side and a newly added 1/2‑20 female thread on the beveled side. This allows attachment of the Ultra 5 Bullet Spike or adapters specifically designed for securing the Ultra Base. The Ultra 5 S is particularly effective under loudspeakers, where its robust mechanical grounding stabilizes imaging, tightens bass response, and improves tonal accuracy.

Optional Ultra 5 Bullet Spike

The Ultra 5 Bullet Spike is designed for users with deep or thick carpet, providing additional penetration and stability. Stillpoints notes, however, that precise loudspeaker alignment—within 1/16"—becomes more challenging when spikes are used, so it is recommended only when necessary for floor type or weight distribution.
For systems striving to achieve reference‑grade clarity, control, and musical realism, the Ultra 5 S offers a profound improvement that is immediately audible.

KEY SONIC CHARACTERISTICS

• More stable, holographic soundstage


• Lower mechanical noise floor with superior detail retrieval


• Tighter, firmer bass with greater pitch accuracy


• Faster transients and improved dynamic articulation


• Enhanced tonal density and harmonic refinement

FEATURES

• Five pockets of Stillpoints patented isolation technology


• Twenty pockets engaged when using four under a loudspeaker


• Dual mounting threads (1/4‑20 and 1/2‑20) for maximum compatibility


• Supports Ultra 5 Bullet Spike and Ultra Base adapters


• Ideal for speakers, amplifiers, and high‑mass components


• Precision‑machined in Silver or Black


• Made in the USA

SPECIFICATIONS

• Model: Stillpoints Ultra 5 S


• Finish Options: Silver or Black


• Isolation Technology: Five Stillpoints technology pockets


• Threading:
  
  • 1/4‑20 female (flat side)
  
  
  • 1/2‑20 female (beveled side)
  
  
  • Optional Accessory: Ultra 5 Bullet Spike (recommended for deep carpet)
  
  
  • Applications: Loudspeakers, amplifiers, power conditioners, heavy components
  
  

  IDEAL SYSTEM PAIRING

  
  

  The Ultra 5 S excels with:

  
  
  • Floorstanding loudspeakers requiring high‑mass stability
  
  
  • Tube or solid‑state reference amplifiers
  
  
  • Power regenerators and conditioning systems
  
  
  • Turntables and digital front‑end components sensitive to vibration
  
  

  Under loudspeakers, the Ultra 5 S provides exceptional grounding and stability. When combined with the Ultra 5 Bullet Spike, it becomes especially effective on thick carpeting while retaining the refinement and clarity expected of Stillpoints’ flagship isolation products.