Naim today confirmed that it had completed a two-year project to design an improved voltage regulator to be used in its power supplies. The new Naim Discrete Regulator (DR) is currently being fitted to the HiCap, XPS, SuperCap, 552 PS and 555 PS commencing May 14th 2012.
What an interesting beast this is. The lispy addition to voices that I was complaining about in my original post has gone. The sound quality is really rather good using the digital out. I prefer the optical output to the coax into the Naim DAC. The optical has a more refined presentation and just sounds right, the coax a little courser.
Anyway it’s arrived and very nice it is too. It’s been running overnight using the standard supplied PS and I’ve recently changed over to the Maplin linear PS as much for my piece of mind as any sonic reason. There is a small difference but not enough to rush to the shops.
What does it sound like? OK, I suppose, is all I can report so far. I’ve only tried the optical and coaxial digital outputs running into a Naim DAC with 555 PS. It has an edge to the sound that sneaks its way on to every song. It’s a slight hard lispiness to vocals that accentuates the lips and teeth sounds. Coax digital sounds substantially different from Optical – surprisingly different in fact.