I replaced (actually had someone else do the work) the coupling caps in my Aesthetix IO with the Cast caps. The stock caps are dynamicap's in the 2nd and 3rd stages and a proprietary cap in the 1st stage. Too soon to come to any conclusions.
If these aren't the Cast caps of old, PCX needs to stop selling these as Cast caps IMO.
If these aren't the Cast caps of old, PCX needs to stop selling these as Cast caps IMO.