Kurzweil K2500

Kurzweil K2500 Image

The K2500 is another evolution of the amazing Kurzweil Sampler - Synthesizer - Workstations. Using their excellent V.A.S.T. synthesis and a professional Sampler option (S models) and Sequencer this is truly an elegant synthesizer with a full keyboard of 76 semi-weighted keys (88 full-weighted piano style keys on the K2500X), 8 real-time sliders, 2 ribbon controllers, pitch and mod wheels and total MIDI controllability. The amazing sounds are contained on 8MB (up to 28MB) of sample ROM, expandable to 28MB using optional sound ROM boards! State-of-the-art sampling is also available on the K2500S and K2500XS with an astonishing 64MB of RAM standard! And that's expandable to 128MB! A 32 track interactive song arranger is also on-board allowing you to create various and complex sequences and songs which can be triggered from a variety of sources. This sequencer is no slacker with pattern, linear, and step recording, cut, copy, paste, advanced groove quantizing, event list editing and other powerful editing tools with up to 16 songs and 16 arrangement tracks. Add stereo outs, eight individual outs, dual SCSI ports, digital I/O and you've got yourself a professional 'Production Studio'.

As a synthesizer, the K2500 is likely one of the most professional and superior instruments available. Very programmable, flexible and excellent sounding as you would expect from Kurzweil, following the amazing K2000 synths. The V.A.S.T. variable architecture synthesis has 60 DSP functions, 438 preset programs (238 ROM, 200 RAM) and is capable of amazingly realistic acoustic instruments and a diverse range of analog synth sounds and other unique sounds complete with multi-effects and real-time MIDI control.

Kurzweil K2500 Image

The K2500S model adds a Sampling option with Extensive Sample Processing and a hi-tech real-time Live Mode V.A.S.T. and K.D.F.X. processing of external analog or digital signals, capable of interfacing with ADAT, TDIF and AES/EBU and receiving up to 8 digital channels at once via the DMTi (Digital MultiTrack Interface). Any of the synths parameters can be used to tweak the external audio signal in real-time and with 20-bit digital output! The K.D.F.X. option offers superb digital 4-stereo-bus multi-effects comparable to any modern rack-mount effects unit. The sampler has analog and digital I/O (AES-EBU, optional S/PDIF) and is capable of sampling while you play.

Kurzweil K2500RS Image

Of course the sampler offers all the advanced editing functions you'd expect from any professional quality sampler. DSP functions include time compression/expansion, pitch shifting, re-sampling, pasting samples on a beats per minute time line (Mix Beat), volume ramps, mix sample and many other functions.The DMTi option allows for data format and sample rate conversion directly with the Alesis ADAT and Tascam DA-88 machines. And the K2500 features Flash ROM upgradeability via diskettes and SCSI.

Kurzweil K2500 Image

The K2500 Audio Elite System (AES, pictured above) is a Rolls Royce version of the K2500 masterpiece. It comes with every single option available to the K2500 and is fully expanded with ROM and RAM to the max! It also includes extra peripherals such as 2 DMTIs and a CD-ROM drive. And finally it has the most elegant and classiest look of any synthesizer ever! This is truly the World's most powerful and amazing Synthesizer ever...it list's for $19,995.00! The K2600 series is virtually identical to the K2500. With all the same and compatible options and features, the K2600 adds increased preset V.A.S.T wave memory with a standard 12MB expandable to 44MB as opposed to the K2500's 8MB expandable to 28MB. The K2600 series also dawns a sportier looking purple and black color-scheme. The K2500 has been used by Pink Floyd, Nine Inch Nails and ATB.

Lookup Kurzweil K2500 Prices

The link above will take you to an eBay search for this synth to see active listings with more images, specs and information. If you don't find it there, try looking in our forum marketplace. Our marketplace gets thousands of visits every week so make sure to check back often if you want to buy or sell a synth.

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Are you looking to buy or sell a Kurzweil K2500? Post an ad in Gear For Sale or a request in Gear Wanted. For spare parts and repair services check out Gear Services & Other Goods. Our forums also has a Buyer’s Guide section where you can ask for advice on buying synthesizers.

26 Visitor comments
February 6, 2012 @ 6:36 pm
Naiya again--add to that please: cannot figure out how to store songs without it crashing the memory. Never enough memory for songs. I need to hook up external HDs obviously, but I can't find SCSI compatible ones and haven't had any success. Everyone says it's a great keyboard, and I'm SURE it is, but I'm SO illiterate when it comes to reading the manual. (That sounds bad.) I would be willing to pay someone to consult with me!
February 6, 2012 @ 6:35 pm
I've had my Kurzweil for over ten years, and I still can't figure out how to use it like it's really intened. I play it for fun, but honestly, I wish it had been easier to figure out, especially considering the floppy drive broke in the first few years. I replace once, and it broke again a year later (unreadable). I would love to know how to download sounds via SCSI and my computer. Do I really need the floppy for sounds? I have all the orchestral stuff. I hooked a SCSI CD device to it once with success... is there anywhere I can download stuff? Get good advice? Thanks! ~Naiya, Portland, OR
benny harris
January 26, 2012 @ 6:48 pm
I was expecting somebody to come up with a keyboard that would complement or even replace my old Kurzweil K2500s, but I can't justify spending $1,000 on another board. With my K2500s and my laptop running Reasons and Cubase, I simply can't see any reason for anything made by Korg, Roland or Yamaha. When I can afford it, I'm getting a latest Kurzweil cause they sound so good and last so long. But until then I bought the K2000 as a back up. No USB? I've got a USB to MIDI thing. It sounds sooooooo good what it lacks don't matter
October 8, 2011 @ 2:27 pm
I have a K2500s....all the manuals, etc....but am totally inapt at figuring it all out. After finding this website and reading the posts I have a renewed interest.
Paula K. Stentz
August 28, 2011 @ 9:48 pm
A brilliant keyboard for live and studio. Great sounds and feel for piano. Ive worked on many keyboards, and in many studio's, and for organic sounds like piano and organs. not to mention incredible pads you will want to live in, easy to use programing and sampling, for a studio musician, performer, and producer,you can sample and sequence all your parts, and go into any studio or performance and imediatly track or play!!! this is a go to board!!
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User Rating

Rated 3.88 (504 Votes)

  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - 48 voices (or 24 stereo)
  • Oscillators - V.A.S.T. variable architecture synthesis with 60 DSP functions, 8 MB (expandable to 28 MB) Internal ROM sounds
  • Sampler - Up to 128 MB of Sample RAM
  • Sequencer - 32 Track sequencer, 16 songs, 16 arrangement tracks
  • Effects - Optional KDFX Reverbs and effects with Digital I/O
  • Keyboard - 76 note semi-weighted or 88 note weighted action keyboard (all with velocity and aftertouch)
  • Memory - 238 Presets in ROM, 200 User in RAM
  • Control - MIDI, Dual SCSI Ports
  • Date Produced - 1996
  • Resources & Credits
  • Images from
    and Kurzweil.

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