Replacing the output caps with film caps, you are safe with the same voltage rating as the electrolytics that came with the kit. Actually, I believe it was stated that 160 volt cap should be plenty which I think is the stock caps rating. But, you are likely to find the film caps rated at 250, 400 or 630 volts (dc). Any one will do fine. Higher VDC rated versions of the same caps are larger. Some claim the higher voltage rated versions of the same cap sound slightly better. Personally, I'll take the installation space savings and cost savings of the lower voltage rated cap because my ears wont hear the subtle difference even if there really is one.
All the affordable, large value film caps mentioned ... Solen, Mundorf mcap, Dayton, Axon, Erse are all of the same basic type (MKP). I went with the Mundorfs myself, but I suspect that any would provide some upgrade in sonics to the stock electrolytics and I suspect they would all be similiar although not the same. These basic MKP types are generally considered the entry level of "audiophile" film capacitors for whatever that's worth to you.
All the affordable, large value film caps mentioned ... Solen, Mundorf mcap, Dayton, Axon, Erse are all of the same basic type (MKP). I went with the Mundorfs myself, but I suspect that any would provide some upgrade in sonics to the stock electrolytics and I suspect they would all be similiar although not the same. These basic MKP types are generally considered the entry level of "audiophile" film capacitors for whatever that's worth to you.
