SKU: 41675430426

Ensoniq SD-1 90's Polyphonic Digital Additive Synthesiser & Sequencer - 100V

Sale price$449.55 Regular price$499.50
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Description

Ensoniq SD-1 90's Polyphonic Digital Additive Synthesiser & Sequencer - 100VEnsoniq SD 1 90's Polyphonic Digital Additive Synthesiser & Sequencer 100V The SD 1 was released in 1990. It is an interesting digital synthesiser as it uses additive synthesis and waveform modulation to create sound, a kind of wavetable synthesis. This places the SD 1 among unique synthesisers such as the PPG Wave and Waldorf Microwave series. The SD 1 can create all sorts of acoustic, electric, digital, and analog like sounds. Its piano sound has

Ensoniq SD-1 90's Polyphonic Digital Additive Synthesiser & Sequencer - 100V

The SD-1 was released in 1990. It is an interesting digital synthesiser as it uses additive synthesis and waveform modulation to create sound, a kind of wavetable synthesis. This places the SD-1 among unique synthesisers such as the PPG Wave and Waldorf Microwave series. 

The SD-1 can create all sorts of acoustic, electric, digital, and analog-like sounds. Its piano sound has over 1 MB of 16-bit waveforms to give it a full and rich realistic tone not found in other digital synthesisers of the time.

The SD-1 has 21 voices of polyphony and a single patch can contain up to 6 of the 168 waves in its ROM memory that can be combined and layered. Advanced and analog-like synth parameters including its dual multi-mode digital filters, three 11-stage envelopes, LFO, and 15 modulation sources allow you to further shape and morph your sounds. There's even a dual effects processor with reverb, chorus, flanging and delay.

The SD-1 has a professional quality on-board sequencer making it a complete all-in-one music production workstation. This is a 24-track sequencer with 25,000 note capacity and it holds up to 60 sequences and 20 songs. 

Condition:

  • This unit has been used.

  • This SD-1 has had a major service. All issues and faulty components were replaced. It has since been tested and we can confirm it is fully functional and sounding great!

  • Unfortunately the floppy disk drive is not working, however is not necessary to use the synthesiser or save or move sounds or sequences as it also has MIDI. This could be swapped out by a synth savvy person with a more modern USB or SD card emulator. 

  • The cosmetic condition of this unit is good. It shows some general wear from use and age like some text and paint finish which was worn off the front. The text is for the inputs and outputs on the back which is still clear on the back of the unit. It does not detract from use or functions of the machine. Please see photos for further details. 
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  • It looks like they keys were lacquered with a clear, shiny coat in the past. Please see all photos for further details.

  • This SD-1 has had a brand new memory battery installed. 

  • Please be aware this unit is 100V. This means it MUST be used with a step-down transformer, not a travel adaptor. If you are unsure about this please let us know. We have some great, compatible step-downs for sale here: https://www.ebay.com.au/itm/173909299338 They are designed in Australia for use in Australia and can be run 24/7.

  • If you purchase from outside Australia you may need a step-down transformer to use this unit. Please contact us if you need any help sourcing the correct product. 

  • This sale is for the unit only. No other parts, cables or accessories are included unless mentioned above. 
Specifications:

Polyphony - 21 voices 

Oscillators - 1 to 6 per voice. Wavetable has 168 waveforms (multi-sampled acoustic instruments, sustained waveforms, harmonic and inharmonic structures) 3.5 MB ROM.

LFO - 1 LFO

Filter - dual multi-mode digital filters

Envelopes - 3 11-stage envelopes

Sequencer - 25,000 note capacity (expandable to 75,000), 60 patterns, 20 songs

Effects - 24-bit Dual VLSI Multi-Effects: reverb, chorus, flanging, and delay

Keyboard - 61 keys (velocity and polyphonic aftertouch)

Memory - 180 Patches, 60 Performances

Control - MIDI (12-parts)

Date Produced - 1990

Postage:

If you are in a remote area you may incur extra fees. 

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.

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 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:
  1. 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
SKU: 41675430426

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4.4 ★★★★★
Based on 7 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Fort Morgan, US
★★★★★ 5
My dogs new favorite toy
Color: black
Giving it five stars because ultimately my dog loves it, it's easy to use (for the human too in terms of filling and cleaning), it feels good quality, and it serves it's purpose as advertised. I do however think this product could be improved. It'd be awesome if it clipped into some sort of weighted tray because my dog moves this thing around the room by licking. I may try to 3D print something - solid product though, worth the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 17, 2026
S
Verified Purchase
Sheila Jackson
Pawtucket, US
★★★★★ 1
Frustrating but crazy fun
Color: blue, Color: blue
Maybe it’s just me and my breed of dogs but I bought 4 and within 30 seconds of placing them all down on the floor at the same time, we were down to 3… I have 3 German shepherds and a mastiff… 1 shepherd licked once and then took the whole thing in her mouth and ran out the doggy door…( if you own a German shepherd I hope this message finds you) it’s been an hour and I still can’t find the new bowl…so now we are down to 3… I blended some wet dog food and mixed with Greek yogurt for one… texture was smooth but the ball wouldn’t move fast enough for said shepherd so after some adjusting of the consistency… I still couldn’t figure it out…so as one pup is licking one ball, I grabbed the pumpkin puree and yogurt and it was still too thick… so I watered it down with a little bit of Vienna sausage juice…which now of course the crew is waiting for Vienna sausages to be dispersed among this group of terrorists….and as I’m dispersing, I noticed the bowl of wet dog food was upside down and the pumpkin puree bowl was on its side leaking orange liquid out the top… I’m still working on consistency for the remaining bowl… (mind you, we have already had breakfast which consisted of sausages from the oven as we love beer brats for breakfast… 3 cans of wet dog food that all the babies line up for and are spoon fed -and a couple pieces of cheese as I was prepping dinner) ok so now I have a runnier consistency with adding that sausage juice…got it to where I could move the ball pretty easily but then once again it got too dry and the ball just kept getting licked and nothing was sticking to it…when taking the device apart, I noticed that the liquid has no problems being licked up but the problem is that the thicker product gets stuck on the sides and the ball can’t pick it up for some reason… it needs to be nectar consistency or thinner for my family…as I’m seeing… during this whole time I’m mixing different consistencies on my counter… holding on to one with my foot as they do not stand up against large breed mouths, slide all over and also trying to make sure they stayed safe in the home as these were not the cheapest…and holding one in my hand for my special needs shepherd…these things were slipping all over the floor. They are heavy and feel durable but someone back me up here… I have learned so much about my breed of the GSDs… but my life has changed so much since having these babies because learning what can stand up to these dogs is a daily-no-HOURLY TASK. My dogs do not find enrichment activities fun. They bore easily and that’s probably my fault… so when I saw these enrichment bowls I was pumped!! The treat mats, (were shredded within minutes of realizing we couldn’t get treats out quickly) the boxes with the *whack-a-mole” cheese stick games…the poor Amazon box that I so carefully cut holes into did NOT see my shepherds mouth coming… these special toys that the dogs have to roll around to release a treat… no. No. No. I’m still finding chunks of THAT poor toy… these should not be called ‘slow feeder dog bowls’ liquid treats yes but the videos of the dog owners making the yummy stuff to go inside need to be a little more specific… as we all know, all dogs are different… but this product was supposed to entertain the puppers for a little bit but 24 hour supervision is required in this home which is not ideal… I need to get a few things done daily without the assistance of 3 Velcro dogs… impossible with the new enrichment bowls… I’m not going to return them, my dogs love them once they understand to stay put and lick but my dogs consume things so fast that now it’s just another activity to do with them daily which is fine… but if you have certain breeds it might save your couches and shoes from being chewed but now with the way I have to monitor these things and constantly refill the bowls…( my dogs had them cleaned out in about 3 minutes each) all in all, this was not a smart purchase for me as it’s now added more work to our already busy routines… I can only do 1 star…aftermath photos
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Reviewed in the United States on February 19, 2026
R
Verified Purchase
Reviews
Belleville, US
★★★★★ 2
Good for a laugh at least and a messy kitchen
Color: black
While design, quality, and ease of cleaning are great!! These are not for highly food motivated dogs and puppies. My senior dog (100lbs) took a couple licks, he immediately proceeded to pick it up as one unit and carry it to his bed where immediately tore it apart to get to the good stuff. ~ I will say that it is durable and did not fall apart as he carried it. My 7mo old puppy (60lbs) was intrigued and quickly impatient and was able to flip it over and while this only made a little pumpkiny mess, what he did next was hysterical! He picked it up on the edge and threw up in the air and the mess surprised even him but only for a moment. He promptly did it again and on the third time he was able to break the top loose from the bottom and quickly cleaned up the toy and the mess on my kitchen floor and cupboards. Fair warning for those with energetically food motivated labs!! These have since been donated to local shelter with the same warning.
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Reviewed in the United States on April 19, 2026
M
Verified Purchase
MR
Chelsea, US
★★★★★ 5
Great for dogs
Color: blue
My dog is obsessed with this! I put plain yogurt thinned with homemade broth in it and he’s entertained for a good 15 minutes, as well as being fairly calm afterward.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
M
Verified Purchase
Mark Central CA
Louisville, US
★★★★★ 5
Good for Chewers
Theme: Football, Size: Large
Dogs love it, they been chewing on it and it's like new. Also I put treats inside and they really like that. I have a small pit mix and a puppy shepherd husky mutt. They play tug of war with it and it's holding up really good.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026

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