Francesco,
Cryo treatment of wires do not fundamentally change the tonal quality of a wire. The treatment does not add things like brightness, glare or other coloration. However, because there is an increase in clearity and detail, removing a layer of veil from the sound, warm sounding wires will sound less warm and dark sounding wires will sound less dark. Different wires are effectly differently but in general the highend is most dramatically improved with midrange less so but still noticable. Bass is least improved, but in some wires still noticable.
Cryo treatment of wires do not fundamentally change the tonal quality of a wire. The treatment does not add things like brightness, glare or other coloration. However, because there is an increase in clearity and detail, removing a layer of veil from the sound, warm sounding wires will sound less warm and dark sounding wires will sound less dark. Different wires are effectly differently but in general the highend is most dramatically improved with midrange less so but still noticable. Bass is least improved, but in some wires still noticable.