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SuperSonic Stabilizer - Single
SuperSonic Stabilizer - Stacked Pair

SuperSonic Stabilizer

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SuperSonic Stabilizer is a fluorocarbon and metallic composite for use on top of components to increase overall efficiency of compliant isolation feet like Herbie's Tenderfeet and Iso-Cups. Not a mass-loading weight, components are stabilized similarly to resting your palm gently on top of a component, reducing upper-chassis vibration considerably. A strategic, non-magnetic blend of ferrous and non-ferrous particles helps to weaken and disperse RFI and other electromagnetic interference. A thin decoupling layer of black elastomer on the bottom protects component surfaces and prevents the Stabilizer from sliding.

We recommend two Stabilizers for most audio and video components. They can be stacked together or spaced separately on the component. For smaller components like some DACs, power supplies, and small CD players, one Stabilizer will do. (Additional weight can be placed on your Stabilizer if you like (e.g., lead fishing weights, sand bag, decorative objects); the Stabilizer will decouple your component from the added weight while still transferring more virtual mass to the component.)

SuperSonic Stabilizer is also effective on top of amplifier transformers, on rack shelves, as a base under component feet, and other vibration control applications.

Dimensions (each): 2-7/8" (73mm) diameter, 1/2" (12.7mm) tall. Weight: 167.4 grams (5.9 oz.)

Heat-resistant to 500º F (260º C).

Archived Reviews (17)

Customer Reviews

4.8 Based on 5 Reviews
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Iago V.
Spain Spain

UltraSonic Rx Damping

Very good product. The RXs installed in the preamp tubes have contributed to the adjustment of my HiFi system. When installing them it has become clear that the amplifier generated small resonances in medium and treble. The RXs have eliminated a part of them, and as a result the speaker image has increased. Iago Vázquez, Spain.

Ruben T.
United States

Excellent item.

Is not my first one. Great on top of REL sub woofers.


Extraordinary, icing on the cake product.

After isolating all my components, i found these to be the icing on the cake, i simply placed the Supersonic stabilisers central on top of all my components without the need to keep moving them around, they brought extraordinary focus and realism to the big 3D picture, all the Herbies products i use have lifted the performance of my system to new heights, i use Townshend Seismic Platforms along with Black Iso Cups and balls, i am now one very very happy camper.


Very good

Contrary to the other review in this page, I have no need to experiment. Maybe i was lucky. I dropped one stabilizer in the top of my small Rel sub woofer, and the bass came to focus. As side result, the general sound become more natural. . Nothing dramatic, but very obvious. For 32.00 dollars, best price-performance tweak ever. It will stay there, in my sub. Tomorrow I will play with my SACD player, and if I find improvement, will buy another stabilizer.

Ronald G.

They Work

The combination of Sonic Stabilizers and Tender Feet have made a significant, positive difference atop my various "best-in-class budget audiophile" components. For me, the acid test is what happens when they are removed. To my ears, removing them yields the sonic equivalent of wearing smudged eyeglasses. No other type of "weighting" or mechanical "stabilizing" has given me this quality of result. A great product!