How Does a Bias-Shifting Tube Tremolo Work ? - YouTube
Add Reverb & Tremolo
Delta-Trem Tremolo-Panner In-depth - Effectrode
How the Fender Harmonic Tremolo Works - YouTube
RobRobinette Guitar Tube Amps - Here's an annotated schematic with the signal path for a more popular Gibson amp, the GA-40 version 3, 6V6 push-pull, 2 channel guitar amp with tremolo. | Facebook
A solid state replacement for the Fender Tremolo
Fender Vibroverb 6G16 Tremolo Circuit
Simplest tube tremelo
12AU7 Tube tremolo
Stand alone tube tremolo
solid-state tremolo for tube amps… – notes to self