Electrolytic capacitors deteriorate over time. They lose capacitance and start to leak DC. Allowed to detriorate too far they can breakdown causing catastrophic failure. It doesn't matter whether it is a Naim or not. At some point electrolytics should be replaced. These are facts.
Naim recommends recapping every so often (10 years?) to avoid these problems. Whether this is the correct interval or it is worth it to put that much money in a 10 year old piece is open to debate.
Naim recommends recapping every so often (10 years?) to avoid these problems. Whether this is the correct interval or it is worth it to put that much money in a 10 year old piece is open to debate.