SKU: 28152846935

Alesis S4 Quadrasynth 90's Polyphonic 1U Rack Mount Synthesiser Sound Module

Sale price$175.05 Regular price$194.50
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Description

Alesis S4 Quadrasynth 90's Polyphonic 1U Rack Mount Synthesiser Sound ModuleAlesis S4 Quadrasynth 90's Polyphonic 1U Rack Mount Synthesiser Sound Module The S4 is the rack mount version of the QuadraSynth. It's a 64 voice digital synthesizer with a whopping 16 MB of sample ROM, and was the first synth to offer the ADAT Optical Digital interface. It also featured the same multi effects processor as the QuadraVerb 2, drum kits based on the D4 drum module, 4 assignable control knobs, one PCMCIA card slot, 48kHz clock input, and

 

Alesis S4 Quadrasynth 90's Polyphonic 1U Rack Mount Synthesiser Sound Module

The S4 is the rack-mount version of the QuadraSynth. It's a 64-voice digital synthesizer with a whopping 16 MB of sample ROM, and was the first synth to offer the ADAT Optical Digital interface. It also featured the same multi-effects processor as the QuadraVerb 2, drum kits based on the D4 drum module, 4 assignable control knobs, one PCMCIA card slot, 48kHz clock input, and 4 audio outputs.

The S4 is undoubtedly a powerful and flexible synthesiser capable of creating rich sounds - both acoustic and electronic. It uses digital additive/subtractive sample playback synthesis to create high quality stereo grand pianos, organs, strings, drums/percussion, brass, woodwinds, new and classic synth textures, and more. (Vintage Synth Explorer)

Condition:

• This unit has been used. 

• This unit has been thoroughly tested and everything is working as it should.

• This unit shows some minor wear from use and age. Nothing major at all. Please see all photos. 

• This unit shows some general wear from use and age like some marks, nicks and scratches. Nothing major at all. Please see all photos for further details. 

• The Alesis uses a 9V AC power adaptor. This adaptor will only be included for Australian & New Zealand buyers. 

• Overseas buyers will need to source their own power supply. Please get in touch if you need help sourcing the correct item. 

• This sale S4 unit only. Nothing else is included unless specified above. 

Specifications:

Polyphony - 64 voices
Oscillators - 48kHz Linear samples
S4: 16MB, expandable to 24MB using PCMCIA ROM and RAM cards
S4 Plus: 20MB, expandable to 28MB using PCMCIA ROM and RAM cards (no cards included)
Multitimbral - 16 parts
Effects - 4 On-board effects, based on the Alesis QuadraVerb 2 FX processor
Arpeg/Seq - None
Keyboard - None
Memory - S4: 128 preset 128 user programs, 100 preset, 100 user mixes
Control - MIDI IN/OUT/THRU (16-channels)
Date Produced - 1993 (S4)

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 store for more serviced pro audio ge

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: 28152846935

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Ken
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★★★★★ 5
Great frother/stirrer especially for the price.
Color: Black, Size: Rechargeable
Best one available. Have used cheap ones from the store that work pretty good, but batteries are a pain. This is rechargeable and it has a push button that allows you to start it right away without having to turn it on to start it kind of like a power drill. If you start to press it it goes slow the harder you press the faster it goes. The different attachments are great. We use it for both coffee frothing as well as mixing up electrolyte drinks with water with the included mixing attachment. Crazy powerful and easy to use.
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Reviewed in the United States on May 9, 2026
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Techie
Charlottesville, US
★★★★★ 5
Strong motor. Works great
Color: Black, Size: Rechargeable
I really like this frother. The fact that it’s variable speed, rechargeable, and can spin at a high rate are all great features. I use it to blend collagen powder and cream into my coffee every morning. Also sometimes use it to Blend drinks. Strong motor. Like that the whisks are removable for cleaning and that it comes with different ones.
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Reviewed in the United States on April 9, 2026
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John Wagner
Chelsea, US
★★★★★ 4
Works well, long use on single charge, high torque - be careful when starting
Color: Black, Size: Rechargeable
Not the most inexpensive powered whisker bur I've used other Typhor products and found them reliable for the task designed. I fell they don't cheap out on the rechargeable battery so I don't fell they will catch fire, as we are hearing about from other cheaper rechargeable items. I liked 2 things about this model the speed control is by a pressure single switch which I can control, not just pick speed 1,2,3. The swappable tips allow for different uses. I don't drink coffee but use the item to whisk eggs for an omelets and it has the torque to mix them without effort. In Fact need to only use half power else it will splatter out of my mixing vessel.
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Reviewed in the United States on June 7, 2026
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Mike from San Diego
Lowell, US
★★★★★ 5
I love it!
Color: Black, Size: Rechargeable
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Reviewed in the United States on June 3, 2026
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KindleDiva
Whiting, US
★★★★★ 5
Perfect all-around frother, stand keeps it nice and neat on the counter within easy reach.
Color: Black, Size: Rechargeable
Rechargeable, lightweight, variable speeds and optional whisks all make this the perfect item for your kitchen. You can quickly froth milk for your coffees, whip a small batch of whip cream, and even make mug cakes with the hook attachment. The price is very compatible with the competitors, but the ease of use makes this a top choice. The variable speeds makes it much better to control than the push button ones. When you let go of the pressure switch it turns off, no need for a dedicated on-off switch. Having the pressure switch on the top makes it extremely easy to use! It fits very comfortably in the hand and with the metal stand, looks quite nice on the counter, ready to use at any time. I highly recommend this InstaWhisk!
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Reviewed in the United States on May 28, 2026

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