Stereo Lockhart Wavefolder, PT2399 crunchy delay, Dual CEM 3340 VCO, dual octaver and Different Rungler are among Optotronics most popular products.
Wide range dual VCO
6 Saw Voltage Controlled LFOs
Rungler with two shift registers: SIPO and PISO
voltage controlled delay
Frequency Divider
Stereo Wavefolder
Delayed Twin Oscillator
Touch sensitive Flanger
Punchy kick with a wavefolder
