the first synth i ever bought was old Vermona ,it was working well until it could not be triggered anymore from the keys ,then it went where all broken gear goes ,i wrote to folks at Vermona to get the schematics and fix it ,i got the schematics and it remained in the basenent for years , as the keys are gone it leaves a lot of panel space ,i located the trigger and cv input , the odd vcos react interesting to audio range input ,more .. the " fine" input can be used for just that ,the " briliance" or " real frq " of the vcf would be nice with additional cv's ,first idea for the free space and in order to keep the instrument's caracter is to make a MFOS 32 step seq as it will exactly fit the space too ,here are few images of the Vermona