Mid surdos repeat a pattern of a Korg MS-20. ** that one fails due to the fab)#
Add note that C12 is optional; not needed if using real TL0x4, fix pots being backwards, tighten up schematic, fit letter instead of latch, https://www.neutrik.com/en/product/nc3faav-0 AA Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector.