Tweaks

"Crossing wires at 90*: another thing that can easily be done (instead) is to keep them all at least an inch (2.5mm) 3mm apart. Easy to do with a plumbing-pipe foam insulation tube, cut up into short bits.. then place the tube bits around the wires where they touch or cross. I even use a bit of packing tape if the tubes want to slip off each other (just on the tube things). Also on the ground: using a paper towel roll tube, taped up with packing tape, then cut into 1/2 inch (1mm) high circles, under the cables on the floor. You could even wrap them in black paper to look cooler. Remember we owe this idea (raising cables off the floor)to Enid Lumley.
These 'nearly free tweaks are great.
To comment on 'expensive tweaks': well a fool and his (her) money are soon parted. Try the free (or nearly free) tweaks first!!
Also footers. Search the web and find Chemical rubber bottle stoppers sizes 8 to 10. They cost about a dollar each. Or, find the industrial urethane vibration control half-domes and pay only $2 to $5 each.
I use a LOT of size 10 bottle stoppers. Love them.
Cheap IS better. I then can spend the money an better equipment.. instead of trying to $$$ money-tweak my way to better sound.
For Hypothetical Example: A setup with $1,000. each pair cables, $2,000 speaker cables and a $3,000 amp? or a set of $200. cables, $400. speaker wires and a $$5,000 amp?
I refuse to spend money in the wrong place!!
I do confess I also do not bother with room treatments, however old and foolish this makes me look.
I would make some of the wall panels with the different height blocks.. but I am too cheap to pay the retail, and too lazy to make them. They look cool to me.

Leave the room, you components! Yes, all this talk about vibration misses something that should have been obvious to this subject, and that is isolate your components, especially vinyl stuff, to an adjacent room space. That way, all the acoustic energy in the listening room will not impact your components. You will be surprised at the difference.
I know, that is not often possible given PAF and other real world considerations. However, it should be tried on a temporary basis to give you a sense of what that change can do to improve the sound in your listening space. If you like the improvement, consider building an isolation box, especially for the turntable, where it will make the most difference. I have experienced two listening rooms where it was done and it made an unbelievable positive difference. It was easy to hear the difference, box and no box.

I would like to see someone who has his cables/IC's at right angles.Pictures please.I have seen this phenomen[sp]once in 59 years,but my eyes were different then,thanks,Bob

I have trouble believing that vibration traveling thru the air and vibrating a SS amp could have much effect. Audible!? Does the effect get worse when you turn it WAY up?
Now, what is the modulus of elasticity of silicon? I know from experience that it is pretty brittle. A silicon wafer, from which integrated circuits and planar devices is manufactured is weird stuff. It'll break along 'cleave' lines in the crystal and if you 'tink' it with a snapping finger, it sounds almost metallic.
Indeed, Silicon is a metalloid, a material having both insulating and conductive properties....Thus 'Semiconductor'. An integrated circuit is composed of many layers and many different materials. Oxides of silicon, Silicon Nitride, Poly amorphous Silicon, Aluminum, and various doping materials all go in to the fabrication of such devices. IC's are NOT a single chunk with a definable resonant frequency. I also suspect that it will resonate at different frequencies in different directions in the material, depending on what they start with.

I'll look up 'resonister', but so far a google has resulted only in some patent application paperwork.
A look at 'Solid State Resonance' likewise yields no hifi applications at first glance.
Now there IS a form of SS resonance which can 100% effect a circuit. If you have anything Piezoelectric, this WILL HAVE an effect. Old 'ceramic' phono cartridges come to mind. Other parts may also have such effects.

Audible? Now there's the question. The post immediately above this one suggests moving stuff to its own enclosure or another room. This would be a great way to test this idea.

Also, kind of an aside: Isn't iridium a metal and as such a conductor? Haven't you added another conductive plane to whatever you painted with it? Will anyone now be able to fix a board which needs a part replaced? Didn't you form another capacitor putting a conductor over an insulator which is than over another conductor?

what about XLR shorting plug? you solder both "+" and "-" to GND?