Herbie's Audio Component Feet

Logo part 1Logo part 2

Herbie's Tenderfoot

Component Isolation

Vacuum tubes are not the only components that suffer from distortions caused by microphonic vibrations. Capacitors and other electronics produce distorted signals in the presence of vibrations, adding fuzz, glare, sibilance, and other anomalies to the musical signal. Micro-electronic devices and processors in today's digital gear are acutely susceptible to these distortions.

Reduction of analog distortions caused by microphonic vibrations results in a more natural musical realism. The enhancement is a definite upgrade to a higher realm of audio appreciation.

Unlike rubbery feet that tend to dull higher frequencies and cause ill-defined or "bloopy" bass - or metals, ceramics, graphite and other rigid coupling devices that produce unique sonic signatures and harsh dynamics, Herbie's specialized and proprietary contra-vibrational products allow your components to deliver the goods as they are engineered to do.

"It is very important to treat vibrations, both micro and macro vibrations in source gear and these products are truly great." -Dan Wright, Modwright Instruments

Positive Feedback Online Writers' Choice Award

More Info/FAQ's

Tenderfoot: Herbie's overall best, most versatile, most popular footer!




Tenderfoot can be used either side up.

Tenderfoot: Individually molded with a proprietary platinum-cure silicone blend formulated in-house in consultation with Wacker Chemie AG of Germany for maximum micro-vibration absorption. Recommended for audio and video components weighing from 2 to 220 pounds (100kg).

Particularly well-suited for CD/DVD and SACD players, DACs, Blu-ray Players, preamps, power supplies and conditioners, turntables, and power amplifiers. Delivers a full-bodied and quick, highly articulate result with amazing linear extension. Works equally well with solid-state and tube components. Does not "ooze," mar, or discolor surfaces. A thin decoupling grungebuster Dot is adhered to the base of each Tenderfoot (Extra-Firm version has black grungebuster Dot).

Two versions available:

TenderSoft: for components weighing 40 pounds or less (18kg)

Extra-Firm: for components of virtually any weight up to 220 pounds (100kg).

Dimensions: 1.1" x 1.1" x .65" tall. (28mm x 16.5mm). Default recommendation: four Tenderfoot isolation feet per component.

Though scarcely ever really needed, pressure-sensitive adhesive is an available option.

Affordable Audio Best of 2009


TenderSoft or Extra-Firm: $1449 ea.

( 8 or more of one kind: $1399 ea.)

Tenderfoot isolation feet work best in direct, intimate contact with the bottom of the component chassis, not under the factory feet.

Tenderfoot isolation feet are the stock footers used with Purity Audio Design Statement Series preamps ($19,495-$31,995), Purity Series preamps ($25,995-$52,995), and new PS300B Ultra mono bloc amps.

Big Tall Tenderfoot: Big and Beefy, yet as delicate as a butterfly

Big Tall Tenderfoot

Big Tall Tenderfoot: Same as above except molded extra tall to lift components free of tall factory feet. Also great for turntables having severe footfall or other macro-vibrational issues. Superior upgrade for AR, Thorens, and VPI suspension springs.

Two versions available:

TenderSoft: for components weighing 40 pounds or less (18kg).

Extra-Firm: for components of virtually any weight up to 250 pounds (115kg).

Dimensions: 1.18" x 1.18" x 1.02" tall. (30mm x 30mm x 25.9mm)

Big Tall Tenderfoot

TenderSoft or Extra-Firm: $1649 ea.

( 8 or more of one kind: $1599 ea.)

Specialty Feet:
Titanium Hush Puckie Cone/Spike Isolation Bases
Hi-End Booster Base Hi-End Booster Base
Gives Tenderfoot isolation feet and other footers a 7/8" height boost for turntables and other components needing extra-tall feet.
Soft Fat Dot Soft Fat Dots
Low-profile footers
Baby Booties Baby Bootie
For tiny components

Component Top Weight

SuperSonic Stabilizer SuperSonic Stabilizer

Which feet to choose?

Because there are so many system variables and unique synergies involved with audio reproduction, it's not always possible to predict which isolation product will work best in any given situation. Recommendations are generalized only, not exclusive. Herbie's Tenderfoot isolation feet, however, perform superbly over an extraordinarily broad range of audio parameters. They are not too picky about what kind of rack, shelf, weight load or vibrational environment they are dealing with. Virtually all audio and video components perform superbly with Tenderfoot isolation feet, our default recommendation for all audio rack components. (For loudspeaker and rack isolation, we recommend Herbie's dBNeutralizer-based products.)

What it is:

Herbie's isolation materials are silicone-based elastomers with varying compliance, firmness, and specialized qualities. Herbie's compounds are not dependent on a precise weight load to be most effective. They are equally effective under a wide range of weight and, because of their loosely cross-linked structure, have little or no resonant "coloration." These unique materials are unsurpassed in their ability to absorb and block micro-vibrations and reduce audio distortion. Materials are residue-free, with excellent dielectric properties.

Herbie's SuperSonic Stabilizer is a special fluorocarbon and metallic particle composite adapted for absolute sonic neutrality and vibration-absorbing ability.

dBNeutralizer(tm) is a composite of platinum-cured silicones with barium sulfate and silica fillers.


(Shore A durometer)
(per footer)
maximum component weight:
Weight: Resistivity:
Temperature Range:
46 1/2 to 40 lbs
(1/4 to 18kg)
50 lbs/4 footers 12 grams 1015
−80ºF to 420ºF
(−62ºC to 216ºC)
50 4 to 100 lbs
(2 to 45kg)
220 lbs/4 footers
300 lbs/5 footers
12 grams 1015
−80ºF to 420ºF
(−62ºC to 216ºC)
Soft Fat Dot 28 1/4 to 24 lbs
(.1 to 11kg)
80 lbs/4 Dots 9 grams 1015
0ºF to 380ºF
(−18ºC to 193ºC)
Big Fat Dot
70 1 to 90 lbs
(.45 to 41kg)
320 lbs/4 Dots 10 grams 1015
−10ºF to 450ºF
(−23ºC to 232ºC)
Stabilizer 90 n/a stabilizes 24 pounds** 156 grams 104
−450ºF to 500ºF
(−268ºC to 260ºC)
*Considers component weight is often unevenly distributed and other factors.
**In conjunction with compliant feet; actual result will vary depending on chassis thickness and other factors.

90-day money-back trial period. Lifetime Warranty! Herbie's isolation feet are guaranteed to improve the performance of audio and video components by reducing vibration-induced distortion. Give them a try - you'll be surprised how great-sounding your present equipment is!

Bang for the buck!Herbie's Audio Lab offers low prices, high value!

All parts and materials made in USA

Copyright © , Herbie's Audio Lab