Old Stutterer Vintage Tremolo - Electric guitar pedal - Colombo Audio Electronics All audio clip are recorded using a Fender Twin Reverb amplifier set on an extremely clean sound. Clip 1 Guitar:
VGS Turner Vintage Tremolo Guitar Pedal on OhGuitar.com
A Brief History of Tremolo - Premier Guitar
Boss TR-2 Tremolo Effects Pedal | Sweetwater
Walrus Audio Fundamental Series Tremolo Pedal - Vintage King