Nerve Audio – The-One v1.0.1 for WiN

The Pro-One is one of the most iconic monophonic synthesizers in history. Designed by Dave Smith in 1981, the synthesizer defined the sound of an entire era with aggressive oscillators, a screaming filter, and an intuitive modulation matrix.

The-One, based on the original schematic and operating manual, simulates every stage of the signal path, with all its imperfections—the very imperfections that give the Pro-One its character. This isn’t a reproduction, but an exploration of sound.

Oscillator Features

Two CEM 3340 oscillators with sawtooth, pulse, and triangle waveforms. Adjustable pulse width, tight sync, and a dedicated low-frequency generator give you the full palette of Pro-One tones—from powerful bass to screaming leads and evolving textures.

A Sound-Defining Filter

The 4-pole CEM 3320 low-pass filter is the heart of the Pro-One. Our OTA-based model reproduces its unique richness, screaming self-oscillation, and musical keyboard tracking, allowing you to play the filter in chromatic mode.

Deep Modulation, Instant Results

Three sources, five destinations, two independent buses. The modulation matrix accurately reproduces all signal paths while maintaining gain accuracy. Add tube and tape saturation for additional warmth and roughness.

Specifications

• Circuit-level sequential circuit emulation of the Pro-One (model 100, 1981)
• 2 minBLEP oscillators (CEM 3340) with sawtooth, pulse, triangle, and hard sync
• 4-pole 24dB/oct OTA filter (CEM 3320) with self-oscillation
• 2 ADSR envelopes (CEM 3310) with true exponential curves
• CA3280 OTA VCA with high-precision data curve
• Full modulation matrix: 3 sources, 5 destinations, wheel/direct buses
• LFOs with sawtooth, triangle, square, and gate sync
• 40-step sequencer (2 groups) with real-time transpose
• Arpeggiator (UP/DOWN) with DAW tempo sync
• Koren 12AX7 tube and Revox B77 tape Extra Saturation
• Mono/Stereo Algorithmic Reverb Extra
• 20 Factory Presets from the Original User Manual
• MIDI Tuning on All Knobs, Sidechain Audio Input