With Sawtooth Stack, Verbos Electronics presents an analog synthvoice with a swarm of five oscillators and MIDI control. The main attraction of the module are the five oscillators, which can be tuned against each other and are based on the in-house Foundation Oscillator based. One press of the autotune button is enough to calibrate the tone generators perfectly. Instead of a filter, Sawtooth Stack is equipped with a multiplying waveshaper. Timbre fades from a sine wave to a sawtooth wave and Richness multiplies the sawtooth wave. The Synthvoice is completed by two loopable attack/decay envelopes that are normalized to the stereo VCA (Amplitude) and the Richness parameter in the waveshaper section (Harmonics). Both envelopes are loopable and have a control range of 2ms to 10 seconds. The fall (decay) time can also be modulated via a control voltage. Thanks to the end-of-cycle output, one envelope can start the other envelope after each cycle. Almost all parameters can be modulated not only via control voltage with bipolar attenuators but also via MIDI. Played notes affect the pitch of the oscillators and the gate inputs of the two envelopes. Velocity is normalized to the timbre parameter. Below some parameters there is a number, this is the corresponding MIDI CC and the parameter can be automated from a DAW or with a master sequencer. Musically, Sawtooth Stack moves between dub techno chords, fat rave and mainstage sounds and diffuse sounds that stimulate the imagination. As the module is designed as a synthvoice, you basically don't need much more than a Eurorack case with power supply to get started.
