My take on cryo is a conservative one. I chose zero degrees or above as the "safe" area to treat the preamp. No its not full Cyro treatment which reach -300 degrees. Risky without Joseph's approval.
The preamp (tubes included) has so much room inside that it creates its own ice box from all the metal. I have to say the preamp has improved with no adverse effects.
I am grateful to Rx8man for recommending the preamp to me I am forever grateful to Joseph for making it possible to evaluate the TP 2.0.
The improvements are in immediacy and 3-Dimensionality. Voices have realistic character and subtle details are more apparent. This is amazing to me at this stage of the break in period.