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Korg Multi/Poly Analog Modeling Synthesizer Certified Open Box , $809.99 - Add to Cart Skip to Product Information

Korg Multi/Poly Analog Modeling Synthesizer Certified Open Box

37-key Analog Modeling Synthesizer with 4 Oscillators, Noise Generator, Dual Filters, Insert FX, 4 Envelopes, 5 LFOs, and 6 Mod Processors
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Item ID: MultiPolyd1
Korg Multi/Poly Analog Modeling Synthesizer
Korg Multi/Poly Analog Modeling Synthesizer

Certified Open Box Savings!

Save $90 What is Certified Open Box?

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Savings: $90.00 New for $899.99

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Korg Multi/Poly Analog Modeling Synthesizer Certified Open Box

Certified Open Box Savings!

Save $90 What is Certified Open Box?

The price below reflects your savings.

Savings: $90.00 New for $899.99

Korg’s Splendid Next-Gen Analog Modeling Synth

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Our Product Research Team

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Korg’s Mono/Poly analog synthesizer of the 1980s has achieved legendary status among the synth cognoscenti, and for good reason. Its unique paraphonic architecture with four stacked oscillators enabled what was essentially a monosynth to create fat, overtone-rich sounds that could go toe-to-toe with many polysynths of the era. Given vintage Mono/Polys are increasingly rare, you might be pining for a chance to own one of these coveted synths. Well, Sweetwater has something better in store for you. Inspired by the classic Mono/Poly, the Korg Multi/Poly synthesizer leverages the company’s cutting-edge analog modeling technology to deliver the big, multidimensional sounds pioneered by its lauded ancestor — and more!

Inspired by a legend

The original Mono/Poly boasted experimental features such as round-robin oscillator triggering and flexible x-mod and sync routing. Such clever engineering endowed the compact, user-friendly Mono/Poly with sonic capabilities previously only achievable in massive modular synth rigs. Providing an affordable entrée into the world of limitless sound design, today’s Korg Multi/Poly delivers the power of a polyphonic modular system in a modern analog modeling synth featuring a well-built, compact chassis with 37 full-sized, semi-weighted keys, a plethora of hands-on controls, and classic wooden end cheeks.

Explore new sonic vistas

The first Korg synth to use the company’s next-gen analog modeling technology, the Multi/Poly makes it easy to forge stunning mashups fueled by sonic elements epitomized by classic East-coast and West-coast analog synthesis. Roll up your sleeves and dive into a veritable playground of classic analog-style, digital wavetable, and wave-shaper oscillators and a broad selection of advanced modeled filters. Shape your sounds with modeled envelopes, VCAs, and portamento circuits. Add organic timbral variation with virtual voicing cards. Spice things up with Layer Rotate, which triggers new programs each time you press a key. Modern analog modeling makes it possible to model virtually any existing technology to achieve an unlimited range of sounds. Sweetwater invites you to open up your music to new sonic vistas with the Korg Multi/Poly.

Korg Multi/Poly Features:

  • Compact analog modeling synthesizer
  • 37 full-sized semi-weighted keys
  • Classic modeled analog, digital wavetable, and wave-shaper oscillators
  • Next-gen modeled filters, modeled portamento, modeled envelopes, and modeled VCAs
  • 4 oscillators, a noise generator, dual filters, and 3 insert effects
  • 4 looping DAHDSR envelopes, 5 LFOs, 6 Mod Processors
  • 3 key-track generators; multi-lane Motion Sequencing 2.0
  • Layer 4 Programs at once, add master reverb and EQ, 2 Mod Processors, and Kaoss Physics
  • Layer Rotate triggers new Programs with each key press
  • Motion Sequencing 2.0 runs individual sequences for each voice
  • Record knob movements in real time
  • Timing, Pitch, Shape, and 4 sets of Step Sequence values are separated into lanes
  • Each lane can have a different number of steps
  • Modulate loop points, step probabilities, and more on a per-note basis
  • Kaoss Physics combines hands-on modulation control with interactive game-type physics that includes gravity, reflection, absorption, and friction
  • Mod Knobs make it easy to bend sounds to your will
  • Smooth Sound Transitions let voices and effects ring out naturally after you change sounds
  • Max polyphony: 60 Voices (dependent on settings)
  • Controllers: Mod Wheel, Pitch Wheel, Kaoss Physics, 4 Mod Knobs
  • Pre FX: Decimator, Graphic EQ, Guitar Amp, Modern Compressor, Parametric EQ, Red Compressor, Ring Modulator, Tremolo, Wave Shaper, Vintage Distortion
  • Mod FX: Black Chorus/Flanger, Black Phase, CX-3 Vibrato Chorus, EP Chorus, Harmonic Chorus, Modern Chorus, Modern Phaser, Orange Phase, Polysix Ensemble, Small Phase, Talking Modulator, Vintage Chorus, Vintage Flanger, Vintage/Custom Wah, Vox Wah, CX-3 Rotary Speaker
  • Master Reverb and 4-band parametric EQ
What is Certified Open Box Gear?

At Sweetwater, we're so picky that what we call "Certified Open Box" is actually better than what most music retailers sell as "new" gear! Our gear hasn't endured hundreds of people a week plunking away at all the keyboards, fumbling through Stairway to Heaven on every guitar or playing with every fader and knob on a mixer or control surface.

Certified Open Box (also known as a demo) means we’ve had it out of the box for our YouTube channel, displayed at events, tested in our studio, or maybe it was in a customer’s hands for a few days and isn’t ‘factory fresh’ as a result. Every Certified Open Box item we sell has Sweetwater’s 2-year Total Confidence Coverage™ warranty and has been tested and verified up to ‘new’ specs by our factory-authorized technicians to make sure it’s in perfect working order before we ship it to you.

When you buy a Certified Open Box item at Sweetwater, you get:
  • 2-year Total Confidence Coverage Warranty™!
  • Products inspected and tested by our factory-authorized techs, guaranteed to function like new (or better)!
  • FREE shipping on most items
  • Equipment that will MEET or EXCEED your expectations!

Click HERE to browse our current inventory of Certified Open Box equipment. Purchasing Certified Open Box gear from Sweetwater is a smart and safe way to save!

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.