list of implemented modifications : -cv and gate inputs -cv input to turn on slide -cv input for accent -cv input for filter frequency. -output for accent. -audio in to filter. -audio in to frequency modulate the filter. -audio out from filter (pre-vca). -overdrive pot to control the level of oscillator -separate control of main envelope generator times in accented and non-accented notes. -volume envelope can be varied from 16 msec through 3 seconds or no decay at all -soft attack control between 0.3 and 30 msec. -slide time up to 5 times longer than normal -variable filter tracking causes the oscillator cv to control the filter frequency. -internal filter fm -post-vca soft-clip distortion (retains bass response) -push-button to manually activate accent. … etc…