Gretsch Duo Jet with AL Tru Arc and TV Jones T-Arnonds through a Boomerang III into a Juke Rave with 2xEL84s. There's a touch of both AM & FM tremolo, as well as the amazing side-band reverb on the Juke. Signal chain is even simpler: Shure e906 -> Apogee Duet -> GarageBand.