Are You Hearing the Truth?
The only totally functional, lab-tested, and affordable isolators.
EVPs are vibration isolation feet for high fidelity playback and recording equipment, as well as guitar, bass and keyboard cabinets, microphone stands, etc. EVPs allow equipment to perform optimally, while preventing noise from being transmitted to adjoining spaces. Vibrations and resonances are no longer heard, leaving only the pure original signals.
- Improves Sound Quality (clarity, dynamics, timbre and soundstage) because resonances and vibrations are eliminated. Vibrations can even cause electrical errors in passive components, semiconductors, connectors, laser reading and turntable playback, resulting in data corruption, phase distortions, noise, etc.
- Reduces Sound Transmission to adjacent spaces (other occupants don’t complain) because vibrations are not transferred to the building structure.
EVPs have been lab tested and found to conservatively eliminate vibrations to and from equipment from 5-14 Hz. and up by >80%. This is audible from both a sound quality and a noise control point of view.
Standard EVPs are 2″ or 4″ squares by about 1″ tall (approx. 51 or 102 square x 30mm tall). Standard EVPs are black with felt or rubber top and bottom. Standard EVPs typically ship within one day of ordering.
EVPs decouple and “float” resting equipment, while absorbing vibration energy. A proper decoupler must be able to handle the load without compressing too little, or too much, in order to function. EVP is available in two densities and two sizes to handle equipment from 6 – 304 lbs. (7.25 – 137.89kg.). They are about 1″ (25.4mm) tall and either 2″ (50.8mm) or 4″ (101.6mm) square, with rubber or felt finish. Custom EVPs can be specially made.
“When AV RoomService’s specially-designed and constructed EVP isolators arrived, I replaced the wood blocks and the difference was “night and day”: The sound not only tightened up, but it became quieter.” – Bob Katz, Mastering Engineer- 3 time Grammy winner
“I’ve been happily using prototypes of the EVPs for almost a year. Since placing them under my guitar cabinet, they have not moved. I found the improvement in tone to be readily apparent – a tightening up in the low end and a more focused and clearer tone overall. I won’t record my guitar without them!” – Matt McCabe, guitarist of King Never
Spikes, blocks and cones are very popular and can remove some vibrations– while amplifying others. Think of a tuning fork handle placed against a shelf. The shelf becomes a soundboard. Rubber type pads are limited in bandwidth and in load handling. They too can alter the sound, but not eliminate the problem. Decoupling is the correct solution to preventing vibration transmission and removing resonances.
Solid spikes, blocks and cones can make the sound different, but never neutral.
In addition, solid feet offer little to no noise control, rather they transfer vibrations directly into the structure and to adjacent spaces by coupling them. This structure-borne energy is not only transferred to connected spaces, but also re-radiated back into the room.
The videos below demonstrate the EVP effectiveness in an easy-to-understand manor. It also demonstrates how solid feet do not isolate vibrations, rather they directly couple them, attenuating some frequencies, amplifying others, depending on the unique compliance of the whole system. The mechanically plucked tines offer a controlled, repeatable demonstration.
For reference: The sound level on the glass peaked at 80.3 dBA @15kHz.
The sound level on the cone peaked at 82.2 dBA @ 13.5kHz.
The sound level on the EVP peaked at 45.5 dBA @ 1.1kHz.
Be suspect of claims with no proof, and of “one-size-fits-all” isolators.