A tremolo effect in the spirit of old Magnatone amplifiers. This produces a subtle tremolo effect that has a nice wobbly tail. Very swampy!
Sound samples by Jukka-Pekka Berg:
Guitar: ESP 400 Telecaster loaded with Texas Special pickups, pickup switch in middle position
Amp: 1964 VOX AC30(T), Celestion Silver Alnico (reconed 2013)
Microphones: AKG 414, Shure 57
Studer 905 preamps, no eq