FEATURES: 8-voice, pure-analog polyphony with sine, saw, square, triangle, and noise Two discrete SEM/OB-X-lineage VCOs per voice deliver classic punchy Oberheim tone Discrete SEM-lineage VCFs deliver authentic OB-X-style tone and presence Genuine Curtis filters add bold OB-Xa/OB-8 character Meticulously modeled envelope responses match each OB model: OB-X, OB-Xa, and OB-8 The 61-key FATAR velocity- and touch-sensitive keyboard allows unparalleled expression and responsiveness Bi-timbral capability allows two presets simultaneously for splits and doubles 400-plus factory programs, including the full set of factory sounds for the OB-X, OB-SX, OB-Xa, and OB-8 Integral, fanless, heatsink-free power supply Real walnut end cheeks High-resolution OLED display enables patch management and easy access to advanced features Classic Oberheim Pitch and Mod levers allow expressive note bending, vibrato, and access to arpeggiator functions ENHANCEMENTS: Additional SEM filter modes add high-pass, band-pass, and notch functions to the classic OB-X filter Vintage knob allows variable amounts of voice-to-voice variability to emulate the behavior of vintage instruments Velocity sensitivity adds expressiveness to volume and filter Channel Aftertouch adds real-time performance-based modulation Enhanced unison allows variable voice stacking from 1-8 voices Variable triangle wave cross-modulation Over 600 user-programmable preset locations Programmable per-voice pan allows wider stereo presence Variable oscillator and noise levels