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Description
Kurzweil K 250 RMX Vintage 80s Synthesiser Sequencer Sampler Version 4.1 - 240VKurzweil K 250 RMX Vintage 80s Synthesiser Sequencer Sampler Version 4. 1 240V A true piece of synth history right here! The Kurzweil K250 has a pretty special origin story: it began after Stevie Wonder challenged Raymond Kurzweil to create an instrument that could combine computer control with the expressive sound of real acoustic instruments. Wonder became a musical advisor to Kurzweil Music Systems, and early K250 prototypes were built for him in
Kurzweil K 250 RMX Vintage 80s Synthesiser Sequencer Sampler Version 4.1 - 240V
A true piece of synth history right here! The Kurzweil K250 has a pretty special origin story: it began after Stevie Wonder challenged Raymond Kurzweil to create an instrument that could combine computer control with the expressive sound of real acoustic instruments. Wonder became a musical advisor to Kurzweil Music Systems, and early K250 prototypes were built for him in 1983. Officially unveiled at the 1984 Summer NAMM show, the K250 became one of the landmark digital instruments of the decade, combining sampled acoustic sounds, synthesis, sequencing, and a fully weighted keyboard. The K250 RMX was released a few years later.
The Kurzweil K250 RMX is the rack mount version of the Kurzweil K250 system, released in the mid-1980s and documented by Kurzweil as an 8-space rack module. The K250 line was one of Kurzweil’s early flagship digital instruments, built around sampled sounds stored in ROM, including Kurzweil’s well-known acoustic instrument sounds. The K250 architecture supports 12-voice polyphony, MIDI operation, layered/multitimbral sound use, and onboard sequencing functions.
This unit is running OS version 4.1. It has the "SuperRAM II" and sampling digitiser card installed so it can be used as a sampler. It also has all four Sound Blocks, A, B C and D installed!
Condition:
- This unit has been used.
- This unit is in great condition overall. It shows some general wear from use and age like some marks, nicks and scratches. Please see photos for further details. Overall it is a nice vintage piece.
- This unit is housed in a custom built hard case that was manufactured in Australia. It features castors wheels and passthroughs for the audio line outs, midi out, computer cable out, and mains power IEC plug with switch.
- The screen does not have a back light.
- This Synth / Sampler unit has been serviced. We can confirm it is 100% functional. It has been thoroughly tested and has no faults to note.
- Please note the synth and sampler has been fully tested. However we were unable to test the computer cable / computer connection functions as we do not have a set-up for this. This is untested. It was made to be used with Macintosh computers of 1980s. This includes the 512k Macintosh or A Machintosh Plus.
- This unit comes with its original and what looks like very rare english owners manual. We could not find any copies online.
- This unit has been upgraded. It has the following:
- Superram II
- Sound Block A, B, C and D
- Please be aware this unit is 240V. It was made for use in Australia and New Zealand. It powers on with an IEC cable. This cable is not included in the sale.
- International buyers will need a step-up transformer to use this unit.
Pick up would be preferred and is free. You can pick up from West Gosford, NSW. 2250.
If you are in a remote area you will most likely incur extra fees before this unit can ship out. This is because the unit weighs around 30KG without packaging. Please contact us before purchase if you are unsure.
If you are in a remote area you will most likely incur extra fees before this unit can ship out. This is because the unit weighs around 30KG without packaging. Please contact us before purchase if you are unsure.
International import tax, duty, vat, custom fees or any other charges are not covered by us, nor included in the shipping fees. These are the responsibility of the buyer. International shipping will be very expensive. Please contact us for a direct quote.
Return Policy:
Returns will only be accepted for manufacture defects / faulty items. Please contact us if you have any problems with your purchase and we will strive to work it out with you.
Please note the synth has been fully tested. However we were unable to test the computer cable / computer connection functions as we do not have a set-up for this. This is untested. This has been noted twice in the listing. We cannot accept returns for this.
Please contact us with any enquiries, and check our other listings for more pro audio and accessories.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 300 reviews
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Product Reviews
★★★★★ 5
Cute pink keyboard
Color: Pink
Good product. Serves it purpose and a nice shade of pink. So far no issues with compatibility or usage.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
★★★★★ 5
Great Keyboard Case!
Color: Pink
Bought this for the wife for Mother’s Day since she needed a new keyboard and case. She used my old Magic Keyboard but constantly was tired of taking her iPad off, just to rotate it. Bought this and she loves it. Very durable, even with our 2 year old playing with it. Keyboard is bright and is good to use.
Just a Bluetooth keyboard setup and it’s all good to go! Definitely great value for the money and something highly recommended for those with an iPad Air or Pro.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 5
Easy to use
Color: Mulberry, Color: Mulberry
I love it. It makes working on it so much easier
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 4
Super cute and soft!
Color: Pine Green, Color: Pine Green
I really like this case. I was surprised by how soft it is! It arrived in perfect condition (just like the photos), no smell, keyboard worked. I followed the sellers instructions to charge before use. I gave it one less star because personally don’t care about the keyboard, it’s a little on the slower side when using the mousepad or typing. I didn’t have any issues with connecting. It was an easy setup. I’d suggest you spend the money for a laptop or a true keyboard if you need it. This is more for looks. If it wasn’t for the quality of the case, I’d probably return.
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Reviewed in the United States on December 15, 2025
★★★★★ 5
Good protection for my ipad
Color: Sky Blue
Flap to close is magnetic, so it stays closed. Has a spot for the open for the ipad. Keyboard is a handy feature to have, and love that it lights up.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 11, 2026
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