Thanks for the superb Adcom insight. Must, however, question your new speaker choice. A pair of (e.g., Walnut) Klipschorns are 15k, not 20k, and certainly not 57+k. If your goal is to approach live listening, and you have the room for them (57+k implies you do), have you ever actually listened to a proper demonstration (with center-fill?) of the K-horns playing your taste in music?