Labels Milestones
BackLadder VCF Kassutronic's KS-20 https://kassu2000.blogspot.com/2019/07/ks-20-filter.html ** uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on the first if(preg_match("@.*(
- 1.005513e+02 7.486783e+00 vertex -9.041086e+01 1.006638e+02.
- Normal -0.288901 -0.952377 0.0975456 facet normal -0.866024.