Daniel recorded the rhythm guitar using one of two tube amps - a Fender Pro Jr and a Vox AC30. The Pro Jr is a small amp without any bells and whistles, only volume and tone knobs and a great sound!
Pedalwise, a Tube Screamer and a Hot Cake Fuzz were frequently used throughout the recordings.
Daniel's main axe is a Gibson ES 335. It's been around for quite some time and delivers a great vintage smooth hollow body tone, perfect for westcoast music.
Les Pauls, Teles and Strats were also used a lot, all in the best interest of the song. What wasn't used was amp software plugins. While they do get closer and closer to the tone of real amps, the feeling of moving air is just not there - at least not yet!