Stillpoints

Ultra SS

Introduced 2010$225 MSRP

The Ultra SS is Stillpoints' stainless-steel isolation "foot," a two-way vibration-dissipating device that can be threaded into the base of a loudspeaker (via an adapter) in place of stock spikes, or used under electronics with the flat "hard hat" cap facing up. Internally it houses four layers of tiny ceramic bearings arranged so that vibrational energy — from either the floor or the component above — is converted into predominantly horizontal motion and dissipated as heat, with no direct vertical path through the device.

MSRP

$225

Used market · Good

$200

-11% vs MSRP

as of Sep 1, 2026

Sell or trade this Add to my system

MSRP to used market

From $225 at launch to $200 today.

Specifications

Price: $225 each / $900 per set of 4 (The Absolute Sound, 2011); $249 each (The Audio Beat, 2013); aluminum "Ultra" version $640 per set of 4
Colors: Silver or black
Height: 1.5" tall, plus about 0.3" of additional vertical leveling adjustment via the HardHat cap; StereoTimes lists overall height as 1.5"–1.7"
Accessory: Optional $69 "Ultra Base," a 3-inch-diameter disc (0.5" thick at center) that screws onto the Ultra SS via the standard ¼"-20 threaded stud
Packaging: Sold individually, and in sets of three or four
Dimensions: Diameter 34.92 mm, height 48.32 mm, weight 147 g (with optional Ultra Base: diameter 75.41 mm, height 56.13 mm, weight 453 g)
Thread size: ¼"-20 threaded stud/bore
Body material: Stainless steel (top and bottom of the housing machined from stainless steel); an aluminum "Ultra" version is also sold at lower cost
Manufacturing: Designed and made in Wisconsin, USA
Internal construction: "Technology pocket" of tiny ceramic balls arranged in four layers (roughly double the ball count of the original Stillpoints design's two layers); combined with a "HardHat" adjustable cap
Dimensions ultra ss v2: Diameter 34.92 mm, height 48.32 mm, weight 147 g (with optional Ultra Base: diameter 75.41 mm, height 56.13 mm, weight 453 g)