SynthsKurzweil ⇝ Kurzweil K250

The K250 is a synthesizer and early 16-bit sampler workstation. It can record at sample rates from 5 kHz (100 seconds) to 50 kHz (10 seconds). It has a 12-track sequencer and is one of the first synthesizers based on samples in wave ROM.

It was developed as a collaboration between Ray Kurzweil and Stevie Wonder.

Specifications

Year Released: 1984

Keyboard: 88 keys with velocity

Polyphony: 12 notes

User Patches: 341

ROM: 96 instruments

Sequencer Memory: 12,000 notes

Weight: 95 lbs.

User Demo Videos

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File Downloads

Kurzweil K250 Service Manual

Items for Sale on Reverb

Kurzweil Vintage Synth  K250Kurzweil Vintage Synth K250 ($975)

Kurzweil K250 1980s -  Key Contact / Trigger circuit boardsKurzweil K250 1980s - Key Contact / Trigger circuit boards ($75)

Kurzweil K250 1980's - BlackKurzweil K250 1980's - Black ($500)

Kurzweil - K250, K250 RMX - Slide potentiometerKurzweil - K250, K250 RMX - Slide potentiometer ($16.99)

Kurzweil K250 POD Workstation Sampler/Sequencer KeyboardKurzweil K250 POD Workstation Sampler/Sequencer Keyboard ($599.99)

Kurzweil K250 RMX Rack 1987 - blackKurzweil K250 RMX Rack 1987 - black ($4,245.57)

Kurzweil K250 ManualKurzweil K250 Manual ($10)

Kurzweil K250 RMX Led Conversion Kit 2025Kurzweil K250 RMX Led Conversion Kit 2025 ($30)

Kurzweil K250 Operators Manual 1980sKurzweil K250 Operators Manual 1980s ($70.16)

Kurzweil 250 (K250) workstation sampler vintage keyboardKurzweil 250 (K250) workstation sampler vintage keyboard ($420.07)

Kurzweil K2500R/K2000R Front Panel With Screen and Buttons.Kurzweil K2500R/K2000R Front Panel With Screen and Buttons. ($130)

Kurzweil K2500R Power Transformer D5G2Kurzweil K2500R Power Transformer D5G2 ($50)

Kurzweil Kurzweil K2500X "Bottom A" Replacement Key First A Key 42W Style for 88 Note KeyboardKurzweil Kurzweil K2500X "Bottom A" Replacement Key First A Key 42W Style for 88 Note Keyboard ($39)

Custom padded cover for Kurzwell K2500 / K2500S 76-Key KeyboardCustom padded cover for Kurzwell K2500 / K2500S 76-Key Keyboard ($54.78)

Kurzweil K1000 hx and sxKurzweil K1000 hx and sx ($555.98)

Kurzweil K2500X Synthesizer - hervorragender Zustand!!Kurzweil K2500X Synthesizer - hervorragender Zustand!! ($1,604.92)

KB3 Mode sticker for Kurzweil K2500 SeriesKB3 Mode sticker for Kurzweil K2500 Series ($15)

Kurzweil K2500RS Rackmount Digital Sampling Sound Module 1990s - BlackKurzweil K2500RS Rackmount Digital Sampling Sound Module 1990s - Black ($988.40)

Kurzweil K2500XS 88-Key Digital Workstation Synthesizer 1990s - BlackKurzweil K2500XS 88-Key Digital Workstation Synthesizer 1990s - Black ($600)

Kurzweil K2500X 88-Keys WITH SAMPLING OPTION!Kurzweil K2500X 88-Keys WITH SAMPLING OPTION! ($1,200)

Kurzweil K2500RS Rackmount Digital Sampling Sound ModuleKurzweil K2500RS Rackmount Digital Sampling Sound Module ($1,853.26)

Kurzweil K2500R Rackmount Digital Sound Module 1990s - BlackKurzweil K2500R Rackmount Digital Sound Module 1990s - Black ($988.40)

Kurzweil K2500 1996 - blackKurzweil K2500 1996 - black ($600)

Kurzweil K2500X AES with caseKurzweil K2500X AES with case ($3,706.52)

Kurzweil K2500X w. Swanflight FlightcaseKurzweil K2500X w. Swanflight Flightcase ($707.59)

Kurzweil K2500X Sintetizador Workstation 88-keysKurzweil K2500X Sintetizador Workstation 88-keys ($1,013.12)

Kurzweil K2500X 88-Key Digital Workstation Synthesizer 1990s - BlackKurzweil K2500X 88-Key Digital Workstation Synthesizer 1990s - Black ($420.36)

Kurzweil K2500S 76 Key Synthesizer with Hard Drive Emulator and (3) CD'sKurzweil K2500S 76 Key Synthesizer with Hard Drive Emulator and (3) CD's ($899)

1990s Kurzweil K2500X AES Audio Elite System 88-Key Workstation1990s Kurzweil K2500X AES Audio Elite System 88-Key Workstation ($2,995)

Kurzweil K2500 / K2500R Handbuch (User Manual)Kurzweil K2500 / K2500R Handbuch (User Manual) ($54.36)

*Serviced* 1990s Kurzweil K2500RS Rackmount Sampler Digital Sound Module K2500 Vintage Synth K2500R Synthesizer Synthesiser w/ Sampling Capabilities*Serviced* 1990s Kurzweil K2500RS Rackmount Sampler Digital Sound Module K2500 Vintage Synth K2500R Synthesizer Synthesiser w/ Sampling Capabilities ($1,061.39)

Kurzweil K2500/K2500X Original Audio I/O-Jack Board. Works Great !...Kurzweil K2500/K2500X Original Audio I/O-Jack Board. Works Great !... ($29)

Kurzweil K2500 Series Video Training Manual VHS [USED]Kurzweil K2500 Series Video Training Manual VHS [USED] ($39.99)

KURZWEIL 76-Key K2500 K2600 PC2 Original 44-Note Keyboard Key Contact BoardKURZWEIL 76-Key K2500 K2600 PC2 Original 44-Note Keyboard Key Contact Board ($49)

Kurzweil K2500 Series Reference Guide [USED]Kurzweil K2500 Series Reference Guide [USED] ($69.99)

Kurzweil K2500 / K2600 - Switch board (for destinations outside of those specified, please write to me)Kurzweil K2500 / K2600 - Switch board (for destinations outside of those specified, please write to me) ($59.30)

Kurzweil K2500 Series Player Control Board K2500/XKurzweil K2500 Series Player Control Board K2500/X ($69)

Kurzweil K2500X - Power supplyKurzweil K2500X - Power supply ($92.66)

Kurzweil K2500 Series Reference Guide [USED]Kurzweil K2500 Series Reference Guide [USED] ($69.99)

Kurzweil K2500R 1995 - BlackKurzweil K2500R 1995 - Black ($106.14)

Kurzweil K2500 - Ribbon cable for Keybed (for destinations outside of those specified, please write to me)Kurzweil K2500 - Ribbon cable for Keybed (for destinations outside of those specified, please write to me) ($34.59)

Kurzweil K2500/K2600 - Panel board (due to high shipping costs, I do not ship outside of Europe)Kurzweil K2500/K2600 - Panel board (due to high shipping costs, I do not ship outside of Europe) ($117.37)

Kurzweil K2500 K2500X Internal Ribbons and CablesKurzweil K2500 K2500X Internal Ribbons and Cables ($89)

Kurzweil K2500 K2500X Digital I/0 Backlite Power BoardKurzweil K2500 K2500X Digital I/0 Backlite Power Board ($99)

Kurzweil K2500X Pitch Bend / Mod Wheel AssemblyKurzweil K2500X Pitch Bend / Mod Wheel Assembly ($69)

Kurzweil K2500 K2500X Disk Drive Bezel Floppy HolderKurzweil K2500 K2500X Disk Drive Bezel Floppy Holder ($19)

Kurzweil K2500X Replacement Keys 1 Octave (12 Pcs) 42W Style for 88 Note KeyboardKurzweil K2500X Replacement Keys 1 Octave (12 Pcs) 42W Style for 88 Note Keyboard ($99)

Kurzweil K2500X "Top C" Replacement Key Last C Key 42W Style for 88 Note KeyboardKurzweil K2500X "Top C" Replacement Key Last C Key 42W Style for 88 Note Keyboard ($39)

Kurzweil K2500 / K2600 - Incomplete Push button setKurzweil K2500 / K2600 - Incomplete Push button set ($111.20)

Kurzweil K2500 K2600 Synthesizer Slider Knob. Works Great !Kurzweil K2500 K2600 Synthesizer Slider Knob. Works Great ! ($9.99)