Digi-key shows Jensen caps... Not sure that they will have this series, but any Excellent Film cap will work... A Copper foil, A film and foil. Maybe a polystyrene.... These are inexpensive but still sound great with enough burn in time. Ebay sells Russian polystyrenes in that size.
In this case, it is the cap value that is more important than the voltage rating. I normally like high voltage parts, but I can't see the circuit requiring 400 volt parts. Good luck, you'll find a good cap that will work fine. Tim
In this case, it is the cap value that is more important than the voltage rating. I normally like high voltage parts, but I can't see the circuit requiring 400 volt parts. Good luck, you'll find a good cap that will work fine. Tim