The 2180 VCA Tile has been updated for 2019 to include input level, bias and CV attenuation controls. It was designed for audio use and is AC coupled with an exponential response. This VCA has a clean hi-fi response that breaks up nicely when over driven. The dedicated BIAS and CV attenuator sliders make it easy to adjust the VCA to a wide range of control voltage levels. The INPUT control is useful for setting the drive level and provides an easy way to mute the VCA without disturbing the CV levels. The brightness of the LED indicator will show how far the VCA is open.