http://guitarmatze.com/
http://magic-acoustic-guitars.com/
The Tonepot is soldered to the bridge Pickup.
1962 Fender Stratocaster straight in an Engl Sovereign Vintage 210 amp from 1998, 4th channel, gain on 3 (overdrive intensity is controlled by the Volume pot of the guitar) and reverb on 6.
In the effect loop is a Boss RC-2 Looper.