SKU: 32094442418

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

$174.85 $194.28
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Ships within 48 hours · Estimated delivery Jul 16 - Jul 21

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

• Sometimes the backlight on the left side of the screen flickers intermittently. It is not common or constant.

• 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.

Your order will be processed within 5 business days.

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: 32094442418

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4.2 ★★★★★
Based on 23 reviews
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SMG
West Palm Beach, US
★★★★★ 5
Nice but short
Size: X-Large, Color: Lavender
Yes, I purchased this shirt for my husband to wear on Mother’s Day. He looked so handsome and the color complimented his skin tone beautifully. The only con that my husband expressed was that the shirt was short but was comfortable and the fabric felt good on his skin. He is 6’3” and usually wears an XLT. Coofandy, Please make these shirts for taller, longer torso men!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
C
Verified Purchase
CPT RSV
Lowell, US
★★★★★ 5
Expensive Look Without The Expense!
Size: Medium, Color: Black, Size: Medium, Color: Black
Sizing: If you’re a true large like me and close to but less than fifteen pounds overweight, normal length and with a 44” chest, buy a medium and use the shirt to inspire you to lose the beer belly. If you have similar dimensions but are overweight by up to thirty pounds, get the large. Materials: The mediums are manufactured to 70% synthetic, 30% linen—which is a great mix, as is doesn’t have to be ironed after it’s washed and hung to dry, nor does it have to be ironed every time you get up from a chair. I’ve had many 100% linen shirts and sure, they look great after you spend thirty minutes ironing them, just to look like a crumpled up newspaper after you get out of your car. My experience with linen shirts is what brought me here. Unboxing the shirt: I threw it on an ironing board the moment I unbagged it. I tried the Synthetic setting on the iron—it wasn’t enough. I then tried the Wool setting and set the steam setting to constant medium to high. It worked great. I didn’t have to press down at all, just lightly glided the iron across wrinkled areas of the shirt. Within five minutes, the shirt looked like a hundred-dollar shirt. The material is light, yet feels heavy to the touch and breathes very well in the heat. The hidden buttons give a clean, modern look that allows the shirt to be worn with anything from shorts and sandals to dress slacks and shoes in a club. I like to wear these shirts, untucked with a pair of jeans and western boots. This shirt is very comfortable, fits nice and is extremely versatile.
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Reviewed in the United States on April 5, 2026
N
Verified Purchase
Nick
Natrona Heights, US
★★★★★ 4
Great for the price
Size: Medium, Color: Grey
Nice and light material. Looks good. Suitable for hot temperatures and casual attire. The only thing I've noticed so far that isn't so great, is that the buttons are rather cheap and the middle part broke out on a few of them.
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Reviewed in the United States on May 16, 2026
H
Verified Purchase
Hypercussion
Draper, US
★★★★★ 5
Impressive solution for the price
Configuration: 3-pack, Style: without eero Plus
I'm a network engineer snob who won't hesitate a single second to give most of the home router and wifi junk sold today a terrible review when it's warranted. After having two router/wifi solutions made by that company that starts with Net and ends with Gear fail on me in less than 6 months, I was about ready to spend a few grand on a Ubiquiti solution and wire up my home for access points and cameras. Then a colleague and friend of mine suggested this eero mesh system as a lower cost/effort option. I'm not a fan of plug and play stuff and was skeptical but figured I could return it if not happy. I have to say I'm pretty impressed. The set up was almost too easy. Just download the eero app to your phone, plug a device in and connect the 2.5g port to your router and the app will walk you through it all. Most importantly, it worked really well when solutions like this from other vendors don't forcing you to connect a cable and manually set up. At first I didn't like that there isn't any ability to give the 2.4ghz and 5ghz networks different SSIDs (I had my previous router set up this way and changing this would have meant climbing up a ladder and reconfiguring several Ring cameras) but eero let's you change the name of the Guest Network to anything you want so this was an easy work around. As others have mentioned download the Wifiman app and shortcut and start scanning your house after you install the main router/wifi device. When you find spots that the signal drops below GOOD quality (-70dbm) drop another unit in between the first and where the signal dropped to poor quality. I bought the 3 pack thinking I'd need it to cover a 6,000 sq ft home. However one device was provided good coverage for most of my house and two provided either excellent or good signal strength everywhere inside and even outside on my patio and driveway. I only have one device on the first and second floors and both floors as well as the basement are all receiving good/excellent signal quality. I could have definitely saved $100 and gone with a two pack but I'm ok with having an extra device as a back up or if someone else in the family needs it (keep in mind any of these devices can act as a standalone router/wifi solution) or even to temporarily extend WiFi farther out into my yard in fair weather for outdoor gatherings etc.. Overall I'm impressed. The dashboard and tools/analytics included with the app are more than adequate for home users. You can even set up alerts for new devices connecting to your network. The GUI is modern and responsive and not like some of the traditional router vendors who still support an antiquated web login that takes forever to connect, lags between function and times out frequently. Time will tell if this is reliable but as mentioned a friend and colleague who owns his own network solution business told me he installs these in homes where the cost and wiring of a Ubiquiti or similar solution is prohibitive and he's never had an issue with their performance and reliability.
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Reviewed in the United States on March 2, 2026
D
Verified Purchase
D.S.
Belleville, US
★★★★★ 5
Bomb.com
Configuration: 3-pack, Style: without eero Plus
Not sure why this doesn’t have 5 stars from everyone! Got the three device set up and man this couldn’t have been easier to set up. This system is bomb, like I’m not sure how much easier of a setup people even want. Everything was basically plug-and-play, and the app walks you through it so smoothly it almost feels too easy. Performance-wise, it’s been amazing. The coverage is solid throughout the whole house, and the speeds are not just fast—they’re consistent everywhere on Wi-Fi, not just when you’re hardwired. I haven’t had any random drops or dead zones like I used to deal with. Compared to the Cox gateway, it’s not even close. They charge $15 a month to rent that thing and it doesn’t hold a candle to this setup—honestly kind of ridiculous. And the quality? Top tier. It honestly feels like an Apple product. From the packaging to the devices themselves, even the cords and the app—everything just feels super polished and premium. I’m actually glad Amazon acquired eero because you can see that level of refinement in the whole experience. My only complaint is the price tag. $400 is definitely not cheap. But when you break it down, Cox charges $15 a month to rent their gateway—that’s $180 a year. In just about two years, this system basically pays for itself, and you’re getting way better performance the whole time. Overall, 110% happy with this purchase.
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Reviewed in the United States on March 25, 2026

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