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Done via skywiring; only one tl074 and support Kassutronic's KS-20 VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some example modules main 5a4e89eea6 Add position for resistor between coarse and +12V, value unknown bugfix/v1.1 Add note resulting from real TL0x4, fix pots being backwards, tighten up schematic, fit letter instead of latch, https://www.neutrik.com/en/product/nc3fah1-0 A Series, 3 pole XLR female receptacle with 6.35mm (1/4in) stereo jack, vertical PCB mount, black chrome shell, https://www.neutrik.com/en/product/nc5fbh-b B Series, 3 pole XLR female receptacle with 6.35mm (1/4in) mono jack without switching contact, vertical PCB mount, https://www.neutrik.com/en/product/nc3fah2 A Series, 4 pole chassis connector, metal housing, vertical PCB contacts (4 switching contacts), https://www.neutrik.com/en/product/nl4md-v-s speakON Chassis Connectors, 4 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc3mav-0 A Series, 5 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, steel retention lug, lateral left PCB mount, https://www.neutrik.com/en/product/nl4md-v-r speakON Chassis Connectors, 2 pole chassis connector, gray D-size flange, countersunk thru holes, horizontal PCB mount, https://www.neutrik.com/en/product/nc5fbh B Series, 3 pole female XLR receptacle, switching contacts, grounding: separate ground contact to mating connector shell and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc4fbh B Series, 3 pole female XLR receptacle, grounding: mating connector shell and front panel, vertical PCB mount, asymmetric push, https://www.neutrik.com/en/product/nc3fav2-da A Series, 3 pole female XLR receptacle, grounding: mating connector shell to pin1 and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc5mbv-sw B Series, 3 pole male XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, vertical PCB mount, retention spring, https://www.neutrik.com/en/product/ncj9fi-v Combo I series, 3 pole female XLR receptacle, grounding: mating connector shell to pin1 and front panel, steel retention lug, lateral right PCB mount, https://www.neutrik.com/en/product/nc3mbv-sw B Series, 3 pole female XLR receptacle, grounding: mating connector shell to pin1 and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc3fahr1 A Series, 3 pole female receptacle, grounding: mating connector shell to pin1 and front panel, lateral left PCB mount, (http://www.qingpu-electronics.com/en/products/WQP-PJ398SM-362.html WQP-PJ398SM WQP-PJ301M-12 TRS 3.5mm mono vertical jack thonkiconn qingpu 3.5mm horizontal headphones jack, http://akizukidenshi.com/download/ds/switronic/ST-005-G.pdf Connector Audio Switronic ST-005-G 3.5mm Horizontal Waterproof Stereo Headphones Jack, https://www.technik.com.hk/images/pdf_product/WP3002-PA66-A.pdf audio jack horizontal PJ311 6pin SMD 3.5mm headphones jack plug stereo 3.5mm PJ311 Headphones with microphone connector, 3.5mm, 4 pins (http://www.qingpu-electronics.com/en/products/WQP-PJ320E-177.html PJ31060-I 6pin SMD 3.5mm stereo headphones jack. Headphones jack (http://www.china-bsun.com/Product48/1577.html headphones jack plug stereo 3.5mm PJ311 Headphones with.

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