Best way to dampen a micro-vibrating Printed Circuit Board inside an amp? Thanks!

I modify, dampen quite a lot inside a chassis, even those with point-to-point wiring. I start with isolating the onboard power supply transformer from the chassis, as all transformers vibrate / resonate, which is one of the reasons transformers are "potted" in some designs. I use many different materials, such as a Dynamat type product and some heat pipe tape. Types of silicon are also excellent. Ignore those nonbelievers. Amazing what chassis damping can do for the performance. Enjoy! MrD.

@mrdecibel 

I would hope no one questions the fact that certain components emit vibrations. Transformers, as you pointed out, are a prime example.

The question (asked more than once but not answered yet) remains, do these vibrations affect the sound quality of purely electronic audio components (say, amps or preamps as opposed to analog mechanical transports such as turntables)?

If so, it would be interesting to understand the mechanisms through which sound quality is negatively impacted.

Electronic components are known to perform to spec under harsh conditions. Witness automotive, aerospace, etc. applications.

In the hifi world, ordinary, inexpensive components, passives and semiconductors, are routinely exposed at length to extreme vibration and shaking in plate amps and crossovers. It is not known that these devices’ performance is negatively impacted in any way; in fact, if it were, you could be certain that passive crossovers in all high-end speakers would be outboarded to separate enclosures, and obviously that’s not the case.

I am actually really interested in learning about this.

Yes, it all matters, for the better. There is much available to read on the subject. Microphonics is for real, and taming/reducing/eliminating them, is audible to my ears, in every case. Whether it is measurable, well, this is a common argument that continues to go on forever. Measurements vs hearing? Enjoy! MrD.  

@devinplombier has made the statement:

" The question (asked more than once but not answered yet) remains, do these vibrations affect the sound quality of purely electronic audio components (say, amps or preamps as opposed to analog mechanical transports such as turntables)? "

In all my time working with TT’s and working towards a TT that is having a condition that protects the Stylus from not being in contact with the LP Modulation, where the environment the Stylus functions in is not optimised for the Interface to occur. I have never been involved in a discussion that suggests a component used in a electronic circuit is a cause for a concern and should be found and eradicated for the negative effect produced.

A component used in a electronic circuit has been made known to be responsible for a failing found in a Turntable, that has not been delivering an optimised performance.

My experiences are simplistic, End Sound being produced can be tidied up and be able to present with a increased attraction towards the sound, when audio devices are mounted on an Isolation that functions satisfactorily in the environment is is selected to be used in.

If the system user is looking for the only sound wanted to be heard, to be produced as a result of the Audio System being Operated. Where sound produced comes from an amplified electric signal tracking through a range of Circuits laid out to a certain Topology and in conjunction with Cables. What is being effected by the addition of Isolation to be referred to as a Tidied Up End Sound?

I have experienced external Isolation taken to within the Chassis and then focused on a few select Components and can only say from my having experienced the end result, discernible changes were detected and the improvement made was quite discernible.

I have not got any Objective Data to substantiate what I making known.