The upper level Solen are solidly good capacitors however there are better. My amplifier uses Solens as first stage coupling capacitors and I replaced them with Jupiter copper foils for a noticeable improvement (not night and day).
My speakers have Duelund CAST copper foil caps that replaced the Solen at the tweeter, a "very " noticeable improvement. Money well spent IMO. To be clear, the sound was quite good with the stock Solen but superior capacitors will make a positive contribution.
Charles
My speakers have Duelund CAST copper foil caps that replaced the Solen at the tweeter, a "very " noticeable improvement. Money well spent IMO. To be clear, the sound was quite good with the stock Solen but superior capacitors will make a positive contribution.
Charles