EA Tremolo History File 2014-11-18 - Started History File. 2014-11-18 - Added transistor pin designations to the main layout files. 2014-11-22 - Fixed transistor pin designations 2015-03-18 - Fixed transistor Q3 pin designations on the Dual footswitch layout. 2017-11-05 - Added diagram for dual footswitch, flashing LED on bypass switch. 2018-01-09 - Added transistor names to layout diagrams.