Black Sheep Trelicopter Tremolo

The history of the Tremolo effect dates back to 1941 and the Tremolo is oftenly referred to as the first real guitar effect ever. The Tremolo circuits of the 50’s was relatively simple, using as little as a dozen components and one half of a tube of the preamp circuit. The effect was achieved through "bias wiggle", in which the bias of a tube, in the preamp or output stage, was turned off and on, or partly off and on. By the mid 60’s, Tremolo was produced using an optocoupler, a light-dep