pharmd07
Experienced
Unfortunately it’s not a simple upgrade from ES1 to ES2. It involves drilling to place the ES2 pickup. Costs a few hundred dollars just for the labor.FYI...
Taylor came out with version 2 preamp for their Expression System 2.
My guitar a 2011 614ce has the version 1 preamp. V2 changes the tone compared to V1.
The preamp is available to upgrade V1's.