Griffin Effects ProCo Rat Big Box Version 1

ProCo Rat Big Box Version 1

1978/79 - 1981

This was the first RAT pedal manufactured in large numbers. To give the RAT a unique look, a custom 20 gauge wrap-around enclosure was designed. The white RAT logo was silk-screened on black, painted metal. The “EQ” on this pedal is labeled Tone. The Tone control increased high frequencies when it was turned clockwise, the opposite of later models.

Features:
Tone Control - Highs are increased as knob is turned clockwise using a Linear taper pot
Pro Co Sound Logo with "Sound Inc" vertically on side
Fluted silver center knobs on earliest versions
"Fringe" on Rat logo with all capital letters on very early models (1st 100?)
Changed to different Rat logo (bottom pic) with lower case #a & t" and no "fringe"
Very early models used Tantalum caps (small blue and brownish orange caps)
No battery door on bottom

		1978 Big Box Rat Distortion, Tone, and Volume text is closer to knobs than the later models Bypass:
		1979 Big Box Rat Rat Logo Changed from earlier version Bypass:
		1981 Big Box Rat Bypass:

Manuals and Brochures	Links:
	Official Rat Distortion Site
Pot Date Codes	ProCo Sound
	Wikipedia Rat

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