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Vostok Instruments Sena is a quad Oszillator with a twist - each Osc has a different Waveform with a different modifier attached.
This module is based on the famous Curtis 3340 chip that brought fame to numerous synth legends like Roland SH 101, Jupiter 6, Oberheim OB-Xa and of course the Sequential Circuits Prophet-5 (RIP Dave Smith!). Each of the four oscillators has a different fundamental waveform: sine, triangle, sawtooth, square. The sound spectrum of each core can be expanded differently. The sine has a two-stage folder after its core, the triangle has a trapezoid shaper, the sawtooth a phase modulator, the rectangle (of course!) PWM. In addition, the inputs are normalized to each other, making detuning/transposition easy. A noise source, also quadruple, with different flavors (white, pink, blue and brown) completes this unusual from Vostok Instruments VCO.
Features:
Four analog VCOs with sine, triangle, sawtooth and rectangle
1V/octave pitch tracking over eight octaves
Dedicated CV control for each oscillator with a two-stage folder (sine), trapezoid shaper (triangle), Phase modulator (sawtooth), PWM modulator with half range (square wave)
normalized frequency inputs with integrated buffers
Selectable LFO mode per channel
Analog noise source with white, pink, blue and brown noise
