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Echo effect with IC PT2399 & 4558 - Electronic Circuit
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ElectroSmash - PT2399 Analysis
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PT2399 ECHO CIRCUIT : 4 Steps - Instructables
ElectroSmash - PT2399 Analysis
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PT2399 Delay Echo Processor IC: Datasheet, Schematic and Circuit
12 pcs PT2399 Echo delay IC incl. 12 pcs 16-pin IC sockets: Amazon.com: Industrial & Scientific
