Cryogenic processing has some interesting effects on electronics and on stereo equipment.”

 This is backed by the fact that cryogenic temperatures can modify crystal defects such as vacancies.  As stated in the book: STRUCTURE-PROPERTY RELATIONS IN NONFERROUS METALS.

 “Vacancies are of interest to designers of microprocessors because they cause current noise…in the thin metal films used in such devices.”

This and other effects are cause enough to know that cryogenic processing can and do change electronics.

 Tests by major companies found advantages:

Tests done by Boeing/Sunstrand demonstrated cryogenic processing extended the life of circuit boards in military applications, specifically boards used in cruise missiles.

Tests done by Honeywell on experimental thin film magnetic memory wafers showed increased conductivity of metallic layers, reduced residual stress between layers, and possible (but not fully confirmed) “healing” of vacancies in the layers.

Tests on transformers showed treated transformers had significantly less hysteresis. The magnetic core saturated less.

Tests on transistors showed a decrease in rise time.

Other tests indicate greatly increased contact life on relays, switches, and circuit breakers.

 A paper done by San Jose State University in conjunction with Northern Illinois University demonstrated that “Cryogenic processing has been proven to be efficient in increasing Schottky contact barrier height, and significantly reducing device reverse leakage current.”


Cryogenic processing of audio equipment has been shown in numerous blind tests to improve the quality of sound in virtually all audio equipment and audio equipment components.

How do we know this?

People in the business of building custom stereo equipment regularly send us components to be treated.  When this started, we felt that this must be some sort of very subtle effect, that would only be heard by “expert” listeners, so we more or less treated their parts and didn’t push things.  Our conversations with these customers left us skeptical that the “ordinary person” would be able to discern a difference.  Then something happened to change our mind.



CTP President Rick Diekman was invited to a meeting of the Chicago Audio Society ( to listen to the difference between treated and untreated components.  Its not that Rick doesn’t like good music, he really does.  But he figured that after years of being around noisy industrial environments, racing engines, and aircraft engines that the subtle changes he was anticipating would be lost on him.  Was he surprised!

The society put together a medium priced system and played several selections on it.  They then changed one component and played the same selections.  There was an audience of around thirty people and the audience unanimously decided the second playing was far superior to the first.  It was then revealed that the second playing used a cryogenically treated component.  This was done over and over with different components being substituted.  In every case but one there was a unanimous decision as to which component sounded better and in every case it turned out to be the cryogenically treated component.  In one case, one person voted for what turned out to be the non treated component.


 The treated components were virtually universally accepted as being superior in sound reproduction.  Even Rick was able to tell the difference.  As one person put it, this was a very inexpensive way to upgrade a system.

 Here is the testimonial from another user:

“I purchased new speaker wires which I wasn’t sure I was going to keep. The imaging was sharp, the sound was clear and transparent, but the wires lacked weight and warmth. Then I had them treated cryogenically at Controlled Thermal Processing. As stereo lovers know, tweaking a sound system typically requires sacrificing one element or characteristic to gain another, yet, whatever I sent to Controlled Thermal Processing, I always get in return noticeable, even great gains in performance without any loss. After cryogenic treatment, my new wires have retained all the sharpness, and clarity, but now the sound has the weight and warmth that had been missing, as well as a feeling of power and impact I have never heard before from my system.”

Dr. Harry White

 Note that most audio parts will need to “break in” before optimum sound is achieved after cryogenic processing.

 Please realize that the treatment of audio components and equipment other than CD’s should be considered experimental. We will take every precaution possible to assure your satisfaction, but due to the wide variety types and quality of components that exist, we cannot guaranty that all are suitable to be cryogenically processed. We will be happy to work with you and discuss each individual situation to help assess its suitability.


MUSICAL-INSTRUMENT1We have a standard answer for people who doubt that cryogenic processing enhances the sound and play-ability of musical instrument

Professional musicians have a pretty good idea of how their instruments sound and play.  The Chicago Symphony Orchestra and the Boston Pops have their instruments Cryo treated regularly.

Below is an accounting by Dr. Jeffrey Levine from our Boston branch. Dr. Levine has been in the Cryo business for over 35 years.

“Some time in the late 1980’s I was approached by Steve Wasser, the owner of Powell Flute Co., with a manufacturing problem.  He was trying to draw tone hole chimneys in his sterling silver flutes.  The traditional method was to build the chimneys by soldering short cylinders around holes in the flute body, a labor-intensive process.  Drawing material out of the flute body would be a faster method; however, the drawing process resulted in cracking of the chimneys.  Relief of residual stresses by cryogenic treatment eliminated the cracking.  I advised Steve to test the acoustic performance of treated flutes before adopting this new method of fabrication on the suspicion that stress relief might alter the acoustic properties of the material. To my surprise, tests by the in-house “golden eared” QC expert brought rave reviews.  This was the beginning of three years of blind and double blind testing with customers, mostly professional, world-class musicians.  The procedure was to have the customer audition several head joints (the top portion of the flute which has a major impact on the performance of the finished instrument).  One head joint in the each batch had been cryogenically treated.

MUSICAL-INSTRUMENT2The customer was not aware that any special treatment had been performed and in some cases neither the customer nor the Powell employee involved in the test was aware of the treat sample.  In every case the customer chose the treated head joint.  A complete flute was built around the chosen head joint and the completed instrument was cryogenically treated. We subsequently sold Powell two Cryo-processors, which are used to treat flutes, and brass instruments till this day, which were also manufactured by the company.


“NY Times article about Cryogenics and Instruments”