We'd like to say "battery of capacitors", but we more or less cannot.
Ironically, the word "battery" was originally used by Benjamin Franklin to refer to a bank capacitors, not to chemical cells.
"Battery" is a sort of nebulous term for a collection of similar objects working in concert, whether that be artillery guns or electrical cells. Consumer electrical batteries are a collection of electrical cells.
Call it a "capacitor array" and you're set.
There is no deeper well of audiophile snake oil than capacitors.
Drink the cocktail and then the sound will be more perfect.