[GarySP]

Hello. The only reason I can see for using electrolytics is when space is an issue, as they are smaller. However, in the case of the model 20 the filter caps are in the large can next to the transformer. Empty out the old caps in the can, and you'll have enough room to hear an echo in there! The can isn't that hard to rebuild, and is touched on in other threads in this forum. I used poly-film non polarized caps with no problem. Go with 630v caps. Take care, Gary