Solid state definitely are effected by vibration, sometimes obviously, sometimes rather subtly. When I built a simple buffer preamp, which sounds excellent by the way, the sound was changed with each of the following changes, the first two unsubtly and the last more with more mixed results:
Changing nylon PCB standoffs for brass ones
Adding different amount of bitumen damping to the lid
Different footings: steel cones, wood cones, basic rubber feet, sorbothane feet, low pressure bicycle inner tube, ball bearings in cups.
For footings: the coupling feet definitely changed the sound but for the worse, emphasizing some frequencies at the expense of others, often a bit harsh in lower treble. The absorbing feet were more subtle but the inner tube gave the greatest benefit, but it's fiddly as it tends to lose air every couple weeks. Combo of inner tubes (vertical) and ball bearings (horizontal absorption) gave the greatest result but are rather fiddly and still a bit subtle compared to the effect on my laptop (with spinning HDD and fan).
Of course the apparent effect of isolation on the laptop could have been because it was on the same shelf as the DAC whose analog stage could have been picking up the vibration from the laptop.
Last edited by brucew268; 13-03-2018 at 10:38.
Reason: added caveat
Bruce
Theories are not so much answers as questions, to be supported or undermined by experience & testing.
Source: Audiolab 6000CDT > Calyx 24/192 DAC
Amplification: Pass-design B1rev2 pre-amplifier > Neurochrome Modulus 686.
Loudspeakers: Proac Response 1SC
Cables/stands: spkr: MIT MH-750 biwire; IC: HT Truthlink; Target stands, sand-filled; Excel Cat6A 23AWG UFTP & 1attack.de Cat.7 SFTP.
Other: Balanced AC transformer to hydra mains distr; Bass traps & Acoustic panels; Isolation: Inner tube & roller bearings; 3xZyxel ES104A switches in series w/Vreg upgrades.