Do kahlers stay in tune?
Kahler tremolo systems, when setup properly, are notorious for staying in tune no matter how you abuse them. But heavy tremolo use and carpet bombing techniques can eventually wear down even the best metals.
Do they still make Kahler tremolo?
Today, Kahler no longer produces fulcrum-based tremolos. Neal Moser offers Kahler bridges on many models, and the Jackson and ESP Custom Shops currently offer Kahlers as a custom option.