Kurzweil PC4 Workstation / Synthesizers

The Kurzweil PC4 Performance Controller Workstation is a versatile professional keyboard designed for musicians, producers, performers, and sound designers who need expressive playability and deep sound-shaping capabilities in one instrument. Its 88 fully weighted, velocity-sensitive hammer-action keys with aftertouch provide a piano-like playing experience, while Kurzweil's Dynamic VAST synthesis engine, VA1-inspired processing, and six-operator FM engine offer extensive possibilities for creating and customizing sounds. With more than 1,000 factory programs, 4,096 user programs, 2 GB of reloadable user flash memory, and support for importing compatible samples, the PC4 provides a flexible sound-design environment. Its 16-track sequencer, arpeggiators, riff generators, 16-zone MIDI controller architecture, and 32 total FX units support detailed composition, live performance, and production workflows. A high-resolution color display, hands-on physical controllers, multiple audio connections, MIDI, and USB connectivity make the PC4 a comprehensive workstation for stage, theater, worship, and studio applications.

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  88-Key Weighted Hammer-Action Keyboard

  Features 88 fully weighted RPHA hammer-action keys designed to provide a realistic, piano-like playing feel, with velocity sensitivity and aftertouch for expressive performances.

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  Dynamic VAST Synthesis Engine

  Kurzweil's Variable Architecture Synthesis Technology provides programmable DSP algorithms and routing, allowing musicians to build complex sounds and customize their synthesis paths.

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  Six-Operator FM Engine

  Adds frequency modulation synthesis for creating rich, evolving, metallic, percussive, and other complex electronic tones, with support for importing compatible FM SysEx files.

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  VA1-Inspired Virtual Analog Synthesis

  Uses anti-aliasing, power-shaped oscillators, and DSP processing based on Kurzweil's VA1 concept to create analog-style emulations and more experimental sounds.

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  Extensive Factory Sound Library

  Includes more than 1,000 factory programs across 13 categories, covering acoustic and electric pianos, clavinets, harpsichords, organs, orchestral-style sounds, and synthesizer textures.

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  Large User Program and Multi Capacity

  Provides 4,096 user program slots and 4,096 user multi slots for storing customized sounds and performance setups.

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  2 GB Reloadable Flash Memory

  Includes 2 GB of non-volatile user flash memory for reloadable sample content, supporting personalized sound libraries and compatible imported samples.

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  16-Zone MIDI Controller Architecture

  Multi mode supports up to 16 independent zones, allowing the keyboard to control layered sounds, split zones, and external MIDI instruments within a performance setup.

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  16-Track Sequencer

  Provides 16-track sequencing at 960 PPQ resolution, with event-based and track-based editing tools such as quantization, swing, remapping, and controller scaling.

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  Arpeggiators and Riff Generators

  Offers an arpeggiator per program and up to 16 arpeggiators per multi, alongside 16 riff generators per multi for building rhythmic patterns and layered arrangements.

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  32 Total FX Units

  Provides an extensive effects environment with reverbs, delays, chorus, flanging, phasing, equalization, distortion, rotary speaker simulation, compression, and other processing options.

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  Master EQ and Compressor

  Includes master equalization and compression for shaping the overall output and helping achieve a more controlled, polished mix.

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  Hands-On Performance Controls

  Features a pitch wheel, modulation wheel, nine sliders, nine knobs, nine assignable switches, a variation switch, transpose controls, tempo controls, and transport controls for real-time adjustments.

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  High-Resolution Color Display

  The 480 × 272-pixel color LCD features adjustable brightness for clear access to programs, editing functions, and performance settings.

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  Flexible Audio Inputs

  Includes two 1/4-inch audio inputs and one stereo 3.5 mm input, each with effects, for connecting external instruments or audio sources for accompaniment and performance.

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  Four Balanced Analog Outputs

  Provides four 1/4-inch balanced TRS analog outputs arranged as two pairs, enabling flexible stereo and multi-output audio configurations.

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  MIDI and USB Connectivity

  Includes MIDI In and Out plus two USB ports, providing MIDI communication, file backup, operating-system updates, and computer integration.

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  Pedal and Ribbon Controller Support

  Supports switch or sustain pedals, half-damper pedals, continuous control pedals, and an optional ribbon controller for expressive performance control.

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  USB File Management and Updates

  Allows user program and multi backups, as well as operating-system updates, through a USB drive.

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  External Software Editors

  Supports external editing software for compatible Mac, Windows PC, and iOS devices.

• Live Stage PerformanceThe weighted keyboard, extensive sound library, 16-zone controller architecture, physical controls, and performance-oriented effects make it suitable for demanding live setups.
• Studio Music ProductionThe 16-track sequencer, detailed synthesis engines, user sample memory, and extensive effects support composition, sound design, and arrangement.
• Churches and Worship TeamsA broad selection of piano, organ, pad, orchestral, and synthesizer sounds, together with split zones and layered setups, supports varied worship arrangements.
• Theater and Live ProductionsMultiple zones, user-created multis, MIDI control, and real-time performance adjustments help musicians manage complex stage cues and layered sounds.
• Sound DesignDynamic VAST synthesis, six-operator FM, VA1-inspired processing, and deep DSP routing provide extensive creative control over original sounds.
• Keyboardists Requiring Piano-Like FeelThe 88-key fully weighted hammer-action keyboard with velocity sensitivity and aftertouch offers expressive control for piano-based playing and other keyboard parts.
• Electronic Music CompositionThe FM engine, arpeggiators, riff generators, step sequencers, and large effects library support rhythmic, layered, and experimental electronic arrangements.
• External MIDI Instrument ControlThe 16-zone MIDI architecture, MIDI ports, and USB MIDI functionality make the PC4 useful for controlling compatible external sound modules and software instruments.
• Accompaniment and RehearsalThe audio inputs allow external audio sources to be connected for playing along with music while using the keyboard's onboard sound and effects capabilities.