To Diego Estan,
If you have a pair of Bowers & Wilkins 685 S2 loudspeakers already, is it worth the upgrade to the 606 model?
OK, short answer: I would not upgrade.
Long answer: I do feel the 606 is worth the price increase over the 685 S2. The 606 bests or equals the 685 S2 in every category. The one caveat is the hotter-sounding tweeter on the 606. For recordings that are prone to sounding very bright or sibilant, I’d rather listen to the 685 S2; in fact I’d rather listen to the original 685 over the 606.
But there’s a difference between justifying a price difference from one model to another, and actually going through the process of selling a pair of speakers, likely taking a loss, then buying a new pair. Yes, the 606 loudspeaker sounds better, but only marginally so in the grand scheme of things, which is why I said I wouldn’t upgrade. If you want to really upgrade, consider waiting, saving, and making a bigger jump, where the differences in sound will be more obvious, particularly in regards to transparency. Let me know if you have any other questions. . . . Diego Estan