VCO++

Through-Zero Analog Oscillator

The VCO++ from Hampshire Electronics is a precision analog voltage-controlled oscillator built around the SSI2130 chip — delivering ultra-stable tracking, true through-zero FM and PM, and beautifully rich analog tone.

Designed for both classic waveforms and deep frequency modulation, the VCO++ is a versatile sound source for any Eurorack system. With dual 4-digit LED displays showing note and frequency, it offers precise visual feedback rarely seen in an analog VCO — perfect for tuning, calibration, and live performance.

Key Features
Based on the SSI2130 VCO IC — known for musical, temperature-stable performance
Through-Zero FM and PM for complex, evolving tones
Dual 4-digit 7-segment displays for note and frequency readout
Five waveform outputs: sine, triangle, saw, square, and mix
Hard and soft sync inputs for phase-locked or harmonically rich modulation
External FM and PWM inputs with dedicated level controls
Mix CV input for dynamic waveform blending
Octave selector with precise tracking across the full range
Controls & I/O
Knobs: Octave, T-Z FM, T-Z PM, EX FM, PWM, MIX CV
Inputs: CV, EX FM, PWM, H-SYNC, S-SYNC, T-Z FM, T-Z PM, MIX CV
Outputs: Individual waveform outs plus mix out
Specifications
Format: Eurorack module
Width:20HP
Power: ±12V Eurorack standard
Core: SSI2130 analog VCO
Displays: Dual 4-digit 7-segment for note and frequency
Construction: Hand-assembled in England
The VCO++ combines the warmth of true analog synthesis with the precision and control modern Eurorack musicians expect — from subtle detuned stacks to full FM chaos, it’s the heart of any serious modular voice.

https://hampshireelectronics.co.uk/products/vco-through-zero-analog-oscillator-for-eurorack