I owned a pair of Haydn Signatures. They are as Cmach claims, availible in Europe, or through a Europeon dealer. I beleive the list price was $200 more, the difference being the internal wiring and the tweeters. They used the 'better' tweeter that was availible from the Mozart up, not the Tweeter in the standard Bachs or Haydns. I can't attest to them sounding any better than the regular Haydn's, since I never heard them in my system. I actually only used the Signature Haydns as rear surround speakers. They performed that task quite well. I hope this was somewhat helpful. Maybe you could e-mail VA and/or Sumiko with this question.
Regards,
John
Regards,
John