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Kurzweil PC4 88-key Synthesizer Workstation B-stock

88-key Performance Controller / Synth Workstation with Aftertouch-enabled Hammer-action Keybed, 256-voice polyphony, 6-operator FM Engine, ToneReal Organs, Native V.A.S.T. Editing, and 16-track Sequencer
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V.A.S.T. Performance Capability from Kurzweil

Featuring massive polyphony, a modern 6-operator FM engine, a 16-track sequencer, and more, the Kurzweil PC4 delivers a powerful update of the company’s renowned V.A.S.T. synthesis technology. The PC4 packs Kurzweil's patented FlashPlay technology, 256-voice polyphony, and powerful DSP into a portable performance controller and synth workstation designed to meet the demanding requirements of professional performing artists, songwriters, and studio musicians. The PC4’s 88-note, hammer-action keybed is velocity-sensitive and gives you the sublime feel of an acoustic grand piano with the added expression of aftertouch.

Extensive hands-on, real-time control

Equipped with 36 programmable physical controllers, the PC4 provides the immediacy of hands-on, real-time control. The intuitive, streamlined user interface consists of a 4.3-inch color LCD display with six soft keys underneath, dedicated front-panel transposition and tempo controls, LED-backlit pitch-bend and modulation wheels, nine programmable knobs and sliders, 10 switches, fast categorized instrument selection, and dedicated arpeggiator and sequencer transport controls. In addition to MIDI I/O and USB/MIDI, the PC4 provides flexible connectivity that includes a stereo audio input with FX and jacks for up to four switch pedals and two CC pedals, plus a second USB-to-device port that accepts a USB thumb drive for external storage.

Powerful features, plus a new FM Synth engine

With 2GB of factory sample content, an additional 2GB of user storage, and up to 16 Zones in Multi Mode, the PC4 shines as both a performance controller and synth workstation. The PC4 comes loaded with over 1000 factory programs, a versatile FX engine with full editing capabilities, a 16-track Sequencer, 16 Arpeggiators, 16 Riff Generators, flexible MIDI control with 16 MIDI CC Step Sequencers, and extensive native V.A.S.T. editing capabilities. But the star of the show just might be the powerful, newly developed 6-operator FM synthesis engine that natively imports original ’80s and ’90s FM SysEx files!

Load sounds instantly with FlashPlay technology

One of the features keyboardists at Sweetwater love about the PC4 is its ability to load any sound instantly. Kurzweil calls it FlashPlay technology, and it means you’ll never slow down or botch a performance due to loading times. You’ve got 2GB of killer sounds in the Kurzweil PC4 — all with zero load time — giving the PC4 a staggering amount of horsepower you’ll appreciate whether you’re wowing an audience onstage or impressing collaborators in the studio. Kurzweil knows what you need to perform with confidence, and you get it all in the PC4.

Kurzweil PC4 88-key Performance Controller / Synth Workstation Features:

  • 256 voices of polyphony
  • 2GB of factory sample content plus 2GB of user storage
  • FlashPlay technology with zero load time
  • 1000+ factory programs
  • NEW 6-operator FM Engine with the ability to import original '80s and '90s FM SysEx files
  • KB3 ToneReal Organs with realistic drawbars, rotary speed, chorus/vibrato, brake, percussion
  • 9 sets of programmable knobs, sliders, and buttons
  • 88-note fully-weighted hammer action with velocity-sensitive keys and aftertouch
  • Extensive native V.A.S.T. editing capabilities
  • 16-track Sequencer with dedicated front-panel transport buttons
  • 16 Arpeggiators (Classic or Step sequencers) with dedicated front-panel controls
  • NEW 16 MIDI CC Step Sequencers
  • 16 Riff Generators
  • Dedicated front-panel transposition and tempo controls
  • Ribbon connector input
  • MIDI I/O, USB/MIDI, USB-to-device
  • 2 x 1/4 inch audio input connectors
  • Stereo 3.5mm audio input jack with FX
  • 2 pairs of stereo outputs
  • 4 switch pedals (via 2 stereo jacks)
  • 2 CC pedal inputs

What is B-stock?

B-stock gear is inventory we buy directly from the manufacturer. Most typically, these items are repacks or refurbished units that are in perfect working order. If you are on a budget or don't need the shiny new penny in your arsenal, then B-stock items are a great choice that won't compromise on quality. Best of all, every B-stock item we sell also comes with Sweetwater's exclusive 2-year Warranty, so you can create with confidence.

When you buy a B-stock item at Sweetwater, you get:

  • Sweetwater's exclusive 2-year Warranty!
  • Products inspected and tested by factory-authorized techs, guaranteed to function like new (or better)!
  • FREE shipping on most items
  • Expert Sweetwater Support from a dedicated team

Warranty Info

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Free 2-year Warranty

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Tech Specs

  • Type: Keyboard Workstation
  • Sound Engine: 6-operator FM engine, VAST Virtual Analog, Sample Content
  • Analog/Digital: Digital
  • Number of Keys: 88
  • Type of Keys: Fully-weighted Hammer Action
  • Aftertouch: Yes
  • Velocity Sensitive: Yes
  • Other Controllers: 2 x Wheels (assignable), 9 x Knobs/Sliders (programmable)
  • Polyphony: 256 Voices
  • Effects Types: reverbs, delays, chorus, flange, phaser, EQs, distortions, rotary speaker simulators, compressors
  • Arpeggiator: 16 Arpeggiators (classic, step)
  • Sequencer: 16-track
  • Sampling: 16-bit/96kHz; WAV, AIF
  • Memory: 2GB Factory Content, 2GB User loadable
  • Storage: USB Flash Port
  • Audio Inputs: 2 x 1/4" (L/R), 1 x 1/8" (line)
  • Audio Outputs: 2 x 1/4" (A out), 2 x 1/4" (B out)
  • Headphones: 1 x 1/4"
  • USB: 1 x Type A, 1 x Type B
  • MIDI I/O: In/Out/USB
  • Pedal Inputs: 1 x 1/4" (sustain/switch1), 1 x 1/4" (switch2), 2 x 1/4" (cc1/2)
  • Other I/O: 1 x RJ-45 (external ribbon controller)
  • Power Source: 15V DC power supply (included)
  • Height: 6.5"
  • Width: 51.25
  • Depth: 14.75"
  • Weight: 28.7 lbs.
  • Manufacturer Part Number: AMS-PC4-B1

What Makes Our Sales Engineers Great?

Sweetwater Sales Engineers are a world-class team of experts dedicated to you. Hand selected from across the globe, each brings a wealth of experience and expertise in the world of music gear to provide you with unparalleled service completely free of charge. Friendly relationships, real trust, and the right gear are only a call or a click away!

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Customer Reviews

Write your review
Rated 5/5

Kurzweil PC 4

I chose this instrument vs. Yamaha since the voices sounded like higher quality sampling’s. It has no gimmicks, just great sounds and many many choices. I am learning how to use it, but enjoy playing sounds as-is. This is a keeper.
Music background: Organist
Rated 5/5

Realistic Piano Voices

This is the third Kurzweil keyboard I've bought since the 90's. All of them share one quality: realistic piano sounds. The PC4 has numerous subtle different voices to choose between and at the push of a button beautiful string pads can layer on top of it. The first two Kurzweil cases were metal but this one is plastic: the only minus I've found in an otherwise gorgeous sounding keyboard.
Music background: Professional Musician of 40+ Years
Rated 5/5

Kurzweil PC4

Well-designed interface. Excellent sounds.
Rated 5/5

Love my new PC4

This is a great sounding instrument. I have an old PC88MX so the transition to the PC4 wasn't too drastic but the the sounds are fantastic. I'm planing on using this more as a work station as well as my performance axe and hope I'll figure it all out in the not too distant future.
Music background: Life long performer and composer
Rated 5/5

PC4 still killing it!

I said previously that the PC4 will let you do anything you can imagine. Still true. For stage, this thing is a beast! You can cover all of your song parts with a single multi. That includes triggering any samples you might load. Just figure out what you want to do and do it. Playing organ? You can absolutely shred with this thing. Its keybed has a higher trigger point than some highly touted organ-centric keyboards. Yes, sure, you can forget about rapid repeated notes; a piano-action keybed doesn't have the same bounce as a waterfall. If you like the freedom to lay out and control a multi any way you like, this is it. Still.
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