Vostok Sigma - Multi-Channel Gate Processor Module

Vostok Sigma - Multi-Channel Gate Processor Module.

Vostok Instruments Sigma is a 12HP hybrid rhythm computer and multi-channel gate processor designed for creating complex rhythmic patterns from a small number of gate signals. With four gate inputs and up to 23 simultaneous gate outputs, Sigma lets you generate and manipulate synchronized events across an entire Eurorack system.

The module features four CV-controlled gate-length processors, each capable of producing an adjustable copy of its incoming gate signal with lengths ranging from 1ms to infinite. Each channel also includes a dedicated NOT output for additional rhythmic possibilities.

Sigma's analog logic section adds 15 extra gate outputs, using AND, NAND, OR, NOR, and XOR operations on each pair of processed channels. This allows incoming rhythms to be combined, inverted, and transformed into new patterns without requiring additional sequencers or clock sources.

Its hybrid architecture combines digital gate-length processing with fully analog logic circuits for minimal latency. Pair Sigma with a trigger sequencer or clock generator and a selection of drum modules or voices to create evolving rhythmic patterns and synchronized events throughout your patch.

Features:

• 12HP Eurorack hybrid rhythm computer and gate processor
• Four CV-controlled gate-length processors
• Adjustable gate length from 1ms to infinite
• Up to 23 simultaneous gate outputs
• Dedicated NOT output for each channel
• 15 additional logic outputs
• AND, NAND, OR, NOR, and XOR operations
• Hybrid digital/analog architecture for minimal latency
• 5Vp-p gate and CV signals
• 100kΩ input impedance and 1kΩ output impedance
• 30mm depth including power cable
• ±12V current draw: 70mA
• +5V current draw: 0mA