Instruo Troika
Triple analogue VCO with crossfaded waveforms, hard sync, linear FM and PWM
32 HP Eurorack module
Troika is a 32HP triple analogue VCO from Instruō. Each of the three oscillators has its own coarse and fine tuning, 1V/Oct input (with a per-oscillator link toggle for summing/normalling pitch CV across voices), linear FM input with attenuator, hard sync input, individual waveform output, and Level knob feeding the internal mixer at Mix Out. Each oscillator additionally has a unique pair of morph-pairs selected by a waveform toggle and crossfader, allowing analogue interpolation between every classic VCO waveform. Oscillator 3 swaps one of its morph pairs for a dedicated PWM pulse mode with CV control.
Features
- Three independent analogue VCOs in a single 32HP module
- 1V/Oct tracking on every voice
- Per-oscillator 1V/Oct Link toggles for normalled multi-voice CV
- Linear FM input with attenuator on every voice
- Hard sync input on every voice
- Unique waveform crossfade pairs per oscillator (analogue interpolation)
- Pulse-width modulation on oscillator 3 (knob + CV)
- Per-voice waveform outputs
- Internal unity-gain mixer with dedicated Level knobs and Mix Out
- Designed and built by Instruō (Glasgow, Scotland)
- Reverse-polarity protected power input
- 27mm depth — case-friendly
Controls & Jacks (37)
- Mix Out
- Oscillator 1 Coarse
- Oscillator 1 Fine
- Oscillator 1 Linear FM Attenuator
- Oscillator 1 Level
- Oscillator 1 1V/Oct
- Oscillator 1 Sync
- Oscillator 1 Linear FM
- Oscillator 1 Out
- Oscillator 1 1V/Oct Link
- Oscillator 2 Coarse
- Oscillator 2 Fine
- Oscillator 2 Linear FM Attenuator
- Oscillator 2 Level
- Oscillator 2 1V/Oct
- Oscillator 2 Sync
- Oscillator 2 Linear FM
- Oscillator 2 Out
- Oscillator 2 1V/Oct Link
- Oscillator 3 Coarse
- Oscillator 3 Fine
- Oscillator 3 Linear FM Attenuator
- Oscillator 3 Level
- Oscillator 3 1V/Oct
- Oscillator 3 Sync
- Oscillator 3 Linear FM
- Oscillator 3 Out
- Oscillator 3 PWM
- Oscillator 3 PWM CV
- Oscillator 1 Sine/Triangle Mix
- Oscillator 1 Saw/Square Mix
- Oscillator 2 Sine/Triangle Mix
- Oscillator 2 Saw/Square Mix
- Oscillator 3 Sine/Triangle Mix
- Oscillator 1 Wave Select
- Oscillator 2 Wave Select
- Oscillator 3 Wave Select
How-To Guides
- Detuned three-oscillator voice
- Two-operator linear FM
- Hard-sync lead
- Pulse-width-modulated bass
- Polyphonic three-voice patch
Explore the interactive Troika panel on BleepDex — tap any control to learn what it does.
