I’m wondering how the capacitors age when they have been unused, new in the box, without having been fed electricity since leaving the factory. Is there an explanation I might read as a reference article or book?
This tech note from Würth Elektronik discusses oxide degradation in electrolytic caps over time. It is in no way exhaustive but a good starting point
https://www.we-online.com/catalog/media/o467325v410%20SN019_EN_d.pdf
Congratulations on your Aleph 5! Beautiful piece

