They sound good year after year after year, and are reliable enough to keep working. Quad electrostatics (any of them) and the Klipsch Heritage series (Klipschorns, Belle Klipsch, and LaScala's) are two VERY different routes toward having something you can enjoy for years. So are the classic British monitors (like the LS-3/5a). Modern designs that I think will wear well over the years include the Sonus Fabers.
None of these speakers shouts at you, or unduly draws attention away from the music and toward itself. (The Klipsch Heritage series is more neutral than most horn designs - really quite good.) That is the test of something you can live with for a long time. That and basic reliability.
None of these speakers shouts at you, or unduly draws attention away from the music and toward itself. (The Klipsch Heritage series is more neutral than most horn designs - really quite good.) That is the test of something you can live with for a long time. That and basic reliability.