Micrón, OBF, Pro OUT, dVCA and 4 pole VCF are among Olitronik Circuits most popular products.
6hp out VUmeter with balanced outs
Double VCA (only pcb & pots!!)
4pole VCF (Beta version)
LFO with skew and syncro (reset)
Mini analog synthesizer, in only 8HP (DIY)