VB-2
Vibrato
Courtesy/Thanks to: Boss
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Description: From the Boss Pocket Dictionary vol.2:
The VB-2 Vibrato is the world's first and only effect pedal that can add a vibrato effect to any electric or electronic musical instrument, including guitars, keyboards, and bass guitars. In order to produce a true and natural vibrato effect, the compact VB-2 incorporates state-of-the-art circuitry, including a 1024-stage BBD, plus the same VCA and envelope circuits that are used in synthesizers. When used with a guitar, the VB-2 can produce a wide array of smooth and natural vibrato effects ranging from the vibrato sound produced by conventional fingering techniques, to a unique ultra-slow vibrato and deep, high-speed vibrato sounds. And with the unit's unlatch mode which activates the vibrato effect only while the pedal is pressed, the rise time allows the vibrato effect to come in gradually over a period of time (150 msec to 5 seconds) which is variable by means of the Rise Time Control.
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picture of the Boss VB-2   Picture is courtesy of: harshnoise.com
picture of the Boss VB-2
Picture is courtesy of: harshnoise.com


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Files
boss_vb2.jpg picture of the Boss VB-2
boss_vb2_schem.jpg Schematics for the Boss VB-2
Manufacturers
Boss
Parts used
TL022 Dual Low-Power General-Purpose Operational Amplifier
4558 DUAL OPERATIONAL AMPLIFIER
2SC945A NPN SILICON TRANSISTOR
ISS133 Switching diode
BA662 VCA IC
2SC732 Silicon NPN Epitaxial type (PCT PROCESS)
2SA733 PNP Silicon Transistor
MN3102 CMOS clock generator/driver for Low Voltage Operation BBD
MN3207 1024-Stage Low Voltage Operation Low Noise BBD