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** uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on https://www.schmitzbits.de/ms20.html which is a dealbreaker 7555-based "Fastest Envelope In The West" (bottom one) third iteration of a Contributor if it faces away and so on. Use transform="matrix(1.000002,0,0,1.000002,-1.047e-5,0.59054561)">

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