Synths ⇝ Kurzweil ⇝ 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

Rating

File Downloads

Kurzweil K250 Service Manual

Items for Sale on Reverb

Kurzweil Vintage Synth K250 ($975)

Kurzweil K250 1980s - Key Contact / Trigger circuit boards ($50)

Kurzweil K250 1984 - Black ($405)

Kurzweil K250 RMX Led Conversion Kit 2025 ($30)

Kurzweil K250 Manual ($200)

Kurzweil K250 RMX Rack 1987 - black ($4,205.88)

Kurzweil K250 Operators Manual 1980s ($54.91)

Kurzweil 250 (K250) workstation sampler vintage keyboard ($404.81)

Kurzweil K2500/K2600 SCSI HDD Mounting Case Bracket and Cables Assembly ($24.95)

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

Kurzweil K2500R Power Transformer D5G2 ($50)

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

KURZWEIL 88-Key K2500X K2600X PC88 Original 49-Note Keyboard Key Contact Board ($29)

64Mb RAM SIMM Memory for KURZWEIL K2500 K2600 ($24.95)

Kurzweil K2500 Synthesizer Original Power Transformer. Works Great !... ($39)

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

Kurzweil K2500/K2500X/K2500R Original Engine-Main Board. Works Great !... ($199)

Kurzweil K2500XS 88-key Stage Piano Synth ($346.14)

Kurzweil K2500R Rackmount Digital Sound Module 1990s - Black ($1,726.39)

Kurzweil K2500R Sampler | Stereo Piano ROM + Orchestral ROM | 64MB RAM | Excellent Condition ($525.74)

Kurzweil K2500X - Digital Piano - Black - Good ($999.58)

Kurzweil K2500 XS 1996 - black ($499.97)

Kurzweil K2500R Rackmount Digital Sound Module 1990s - Black ($600)

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

KURZWEIL K2500RS Digital Sampler. FULLY LOADED! Includes the extremely rare KDFX option ($3,250)

MAX’d out Kurzweil K2500R w/ 2GB HD, 128mb RAM, Max PRAM, stereo piano ROM and orchestral ROM, fully working, no issues. ($699)

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

Kurzweil K2500X AES with case ($3,929.02)

Kurzweil K2500 1996 - black ($600)

Kurzweil K2500RS Rack Sampler Synthesizer – V.A.S.T. Workstation – Made in Korea ($1,500)

Kurzweil K2500X Sintetizador Workstation 88-keys - V.A.S.T: Potente Arquitectura de Síntesis Semi-Modular ($869.15)

Kurzweil K2500/K2500X Original Daughter Board. Works Great !... ($99)

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

Kurzweil K2500/K2500X Original Audio I/O-Jack Board. Works Great !... ($19.95)

KB3 Mode sticker for Kurzweil K2500 Series ($15)

Kurzweil K2500X - Power supply ($113.11)

Kurzweil K2500 / K2600 - Switch board (for destinations outside of those specified, please write to me) ($57.15)

Kurzweil K2500 / K2600 - Incomplete Push button set ($77.39)

Kurzweil K2500 Series Player Control Board K2500/X ($79)

Kurzweil K2500 Series Reference Guide [USED] ($39.99)

​Kurzweil K2500 / K2500X Complete Battery Compartment Holder Box & Door Assembly ($30)

Kurzweil K2600/K2500 Original Panel-Switch Board. Works Great !... ($59)

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

PRAM Kurzweil K2500 ($113.11)

Kurzweil K2500/K2500X Original Audio-Scanner Board. Works Great !... ($149)

Kurzweil K2500/K2500X Original Power Supply Board. Works Great !... ($79)

KURZWEIL 88-Key K2500X K2600X PC88 Original 39-Note Keyboard Key Contact Board ($49)

Kurzweil K2500 / K2600 - Complete Slider knob set ($69.06)

Kurzweil K2500 - Display (not for K2600 series) - (for destinations outside of those specified, please write to me) ($142.87)

Kurzweil K2500 Schematic late 1990s ($99.21)