Tantalums may have long life but I’d definitely swap those out just for more transparent audio. Yes, I worked at a small, top end audio manufacturer for a
little over a year.
From: Bill Hurne [mailto:email@example.com]
Not all three units of the same model had the same caps inside. Some had electrolytic coupling caps, others had tantalum. I didn’t replace any tantalum.
The polarity is marked on the PC boards, makes it easier.