I have done a search but cant find anything relevant to my question which is! Can I use polypropylene,mylar ect.. caps instead of 3.3uf,25v and 47uf 6.3v,bipolar electrolytics in the pre-amp section of my sansui amp? I am asking this because I am in the middle of nowhere in west australia and cant get the right electros here. Thanks in advance for any help.