Morley ACV Volume Attack Control Pedal

"Your guitar becomes many instruments with the PIK-Attack. You gain modalities that include virtuality all bowed string and many wind instruments such as: violin, viola, cello, flute, oboe, organ and even synthesizer effects. Each effect is amazingly authentic even to the trained ear.
You gain all this without sacrificing your basic playing techniques and artistry and without having to physically modify or alter your guitar. 
lStart your attack smoothly, softly or with the slash and flash of a lightening rip. The special electronics of the PIK system render, if desired, even the sharpest pluck of a metallic string inaudible, but simultaneously control its onset to audibility. You determine the speed of the note's attack by the position of the pedal; attack very gradually or very steeply. 
The Electro-PIK Attack can also be used as a superb, standard Morley Volume pedal." (Morley Catalog 1980)