OP-X PRO is a meticulously crafted virtual instrument that brings the iconic Oberheim OB-X synthesizer back to life with enhanced capabilities. Built upon the OP-X engine, it expands the original sound palette by delivering a rich analog character and broad sonic flexibility. This recreation captures the essence of the classic hardware while introducing improvements that elevate the user experience and creative potential for modern music production.

A key enhancement in OP-X PRO is the advanced filter section inspired by the vintage SEM multi-mode filter, allowing smooth transitions between low-pass, notch, and high-pass modes. Users can also switch between 12dB and 24dB low-pass settings and blend the filter modes dynamically, with modulation options driven by LFOs and filter envelopes. These features enable sculpting complex textures and evolving soundscapes that maintain the authentic analog warmth and character.

Beyond its sophisticated filter design, OP-X PRO offers extensive tuning and modulation controls including fine detuning, legato modes for unison playing, and voice-specific modulations such as pan and variable mono operation. Each of the six voices has a distinct signal path with unique oscillator, filter, and envelope parameters, providing a rich, organic feel. Additional features like an arpeggiator, sequencer, and multiple modulation options make OP-X PRO a powerful instrument for diverse styles and sound design.