Originally Posted by Tazishere
Replace the Chinese made stock tubes with American made tubes for the Jolida. Usually they're called "New Old Stock". You'll hear the difference.
Which begs the question, who ever did good bias-controlled tests to verify claims like these?
I am aware of a DBT of a classic tubed amp versus a SS amp that ended up with a hung jury, suggesting that a lot of this "sounds better" posturing is just that, posturing.
Tubes have an advantage over solid state in transient sounds.
The inverse is true. Tubed amps with OPTs have that giant boat-anchor standing between them and SS-like transient response.
The electrons travel faster in a vacuum than through silicon transistors.
In metals, the Fermi level lies in the conduction band (see Band Theory, above) giving rise to free conduction electrons. However, in semiconductors the position of the Fermi level is within the band gap, approximately half-way between the conduction band minimum and valence band maximum for intrinsic (undoped) semiconductors. This means that at 0 kelvins, there are no free conduction electrons and the resistance is infinite. However, the resistance will continue to decrease as the charge carrier density in the conduction band increases. In extrinsic (doped) semiconductors, dopant atoms increase the majority charge carrier concentration by donating electrons to the conduction band or accepting holes in the valence band. For both types of donor or acceptor atoms, increasing the dopant density leads to a reduction in the resistance, hence highly doped semiconductors behave metallically. At very high temperatures, the contribution of thermally generated carriers will dominate over the contribution from dopant atoms and the resistance will decrease exponentially with temperature.
but even if the speed were the same, the charge carriers in SS have a far shorter distance to move.
Some people hear the difference, some don't.
Some people know how to do reliable tests, others just want to believe what they believe.