I own the Spectral SDR-4000SL, the previous model (before the SV). I have heard both at length - the two sound similar, but the main difference is that the SV provides an added dash of clarity. Regardless, you'd be happy with either model as the two share an interesting hybrid sound signature - they can make a redbook CD sound dangerously close to a respectable slab of vinyl.
I also compared it to the latest dCS stack, and bought the 4000SL. It was a demo unit on sale, just prior to the release of the SV. A great buy, and it provided great new value to my 2000+ CD collection.
I also compared it to the latest dCS stack, and bought the 4000SL. It was a demo unit on sale, just prior to the release of the SV. A great buy, and it provided great new value to my 2000+ CD collection.