The SINOPE by IO Instruments from Berlin is a low distortion dual VCA with detailed sound and lots of headroom. The carefully designed circuitry allows a high dynamic range and processes both audio and CV signals. This recommends it for all imaginable control tasks. Each of the two VCAs has three CV inputs, which allows the relationship between envelope, velocity and LFO to be adjusted at the inputs. Since the VCA can be opened completely and continuously, it is easy to create drone sounds with it.