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  (paper "A4")

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    (title "Penfold VCA")
    (date "2023-04-23")
    (rev "v1.2")
    (comment 1 "BP185, fIrst published 1986, Bernard Babani")
    (comment 2 "Based on designs from 'Electronic Synthesister Construction', by R.A.Penfold")
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