1µf caps in a Classic II? There are 47µf and 10µf caps on the board as I remember.

OK, that refreshens my memory:

(yours I think)

http://www.maccaps.com/MacCaps/Capacitor_Reference/Entries/1991/10/21_Macintosh_Classic_II_Revision_2.html

(mine)

http://www.maccaps.com/MacCaps/Capacitor_Reference/Entries/1991/10/21_Macintosh_Classic_II.html

I think if they are part of the audio circuitry, then probably not. Only if. Thing is, are they 50V rated?