I've started using these for the audio outs on A600s. C334 and C324. Probably good for equivalent spots in all AGA machines too.
http://uk.farnell.com/jsp/search/productdetail.jsp?CMP=i-ddd7-00001003&sku=1843167
I no longer think there is a need for non-polarised caps in these positions but as you can see below these are about a billion times easier to solder into that tight position without damaging connectors and should last as good as forever.
![]()
I need to replace c211 c212 c213 smd ceramic caps,on the schematics are 0.22μF but the voltage isn't specified,there is a complete list of these ceramic caps with full spec?