Make Noise STO
The STO is Make Noise's classic VCO. It is similar to a single channel of the DPO, but with a few adjustments. It has three outputs, a dedicated Sine output, a square wave Suboctave output, and a waveshaped output, which morphs from a soft triangle to something in between a Triangle and Square wave. There are both Linear and Exponential FM inputs, as well as a Sync input. The Waveshaping circuit is also voltage controllable, providing timbral shifts without any filter. It tracks musically using the 1V/Oct input over 5 octaves. The Suboctave output is kept separate when the Sync input is used, so the suboctave has its own Sync input, S-Gate. For those wanting the sound of Make Noise without the price of a DPO, the STO is the perfect solution.Â
STO Features
- Compact Voltage Controlled Oscillator
- Triangle Core with outputs for SINE, SUB and Variable SHAPE
- Unique Variable SHAPE circuit ripples Even and Odd harmonics for subtle timbral shifts
- Linear FM input with Depth control
- EXPOnential input for deep FM, SYNC sweeps or Transposition of sequences
- SUB-Oscillator yields max bass
- S-Gate input for gating or sync of SUB-Osc. independent of other outputs
- Hard SYNC circuit which combined with Linear FM and Variable SHAPE yields harmonically rich sounds
- Pairs well with the MMG or Optomix
- Eurorack Module
- 8 HP Width
- 30mm Depth
- Current Draw: 40mA @ +12V, 30mA @ -12V

Analog Four MKII available here: https://www.perfectcircuitaudio.com/elektron-analog-four-mkii.html
A compact Voltage Controlled Oscillator designed for generating SINE waves, Variable wave-Shapes, Sub-Octave Harmonics, Oscillator SYNC and Linear FM in the analog domain. The Sub-Timbral Oscillator is the more subtle and melodic friend to the DPO's complex harmonic lattice.
• Triangle Core with outputs for SINE, SUB and Variable Shape
• Unique Variable Shape circuit allows for subtle timbral shifts
• Linear FM input with Depth control
• EXPOnential input for deep FM, SYNC sweeps or Transposition of sequences
• Sub-Oscillator
• S-Gate input allows for gating the Sub-Osc. as well as implementing Sub-Osc. SYNC independent of the SINE and Variable Shape outputs
• Hard Sync circuit which combined with Linear FM and Variable Shape yields harmonically rich sounds
• Pairs well with the MMG or Optomix
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