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This is a rare, very early-production OD-1 featuring a Raytheon 3403 quad op-amp!! Special discounted price due to minor imperfections.
The early OD-1 circuit featured a quad op-amp (a module containing four op-amps). While the RC3403ADB—found in the very earliest models—and the NEC μPC4741C—found in lots #8400–8800—have been confirmed, this unit features the former.The LED indicator is dedicated solely to the battery checker and differs from the specifications of current BOSS effects pedals. Models equipped with the RC3403ADB are characterized by a somewhat tight low end, extended high end, and a bright, crunchy sound. This is a rare piece that lets you experience the original sound of the legendary OD-1!! This unit’s serial number is #8200, and it is believed to have been manufactured in May 1979.There is a small chip in the enclosure (see image), but it is located exactly where the rubber bushing covers it and does not affect operation in any way.
Circuit Board: 052-281B
OP-IC: RC3403ADB (#RAYC7343)
Equipped with external spring-loaded transparent switches
LED is a battery checker type
ACA specification
MADE IN JAPAN
*The housing has some chips (see image), and the rubber bushings on the coin screws have been replaced
Year: 1979
Accessories: None
Contact: Sano
*The warranty period is one month from the date of purchase.
Click here to read our column, “The Beginning of a Legend: A Thorough Analysis of the Appeal of the ‘BOSS OD-1 “Silver Screw” Era” → https://tcgakki.com/pages/magazines-boss-od1
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