"The Sophia tremolo’s design is such a vast improvement over previous systems that it’s an understatement to call it the most significant tremolo system upgrade introduced since the Floyd Rose." Guitar World
Sophia Drop Tuner with Macro-tuner Upgrade Factory Exchange
Sophia Drop Tuner is a quick tuning lever add-on to the 2:22 or 2:92 Macro-tuners...
Easily change from from one pre-determined pitch to another and back almost on-the-fly, say E on the 6th string to D with a flip of the lever -- flip back for return to E .... easy.
Factory Exchange Upgrade replaces a customer's Macro-tuner with a Drop Tuner equipped Macro-tuner.
Setup with the Global Tuner Pro, Stabilizers Plates or StopBlock with TremStop.