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IK Multimedia UNO Synth Pro Keys 37-key Analog Synthesizer

37-key Analog Paraphonic Synthesizer with 3 Oscillators, Dual Multimode Filters, Arpeggiator, 64-step Sequencer, and Digital Effects
IK Multimedia UNO Synth Pro Keys 37-key Analog Synthesizer
$699.99
36 months
Special Financing – Ends Aug 5, 2025
$19.84/month with 36 month financing*
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$499.95
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IK Multimedia UNO Synth Pro Keys 37-key Analog Synthesizer
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The UNO — Expanded!

The IK Multimedia UNO Synth is a digitally controlled analog powerhouse that is a favorite of Sweetwater synthesists for its portability, flexibility, and massive synth tones. Now, IK Multimedia has dialed the UNO Synth up a few notches with the UNO Synth Pro, adding paraphonic capabilities, a third oscillator, a second multimode filter, a 64-step sequencer, expansive modulation, and a formidable digital effects engine. Additionally, the UNO Synth Pro is equipped with 37 velocity-sensitive keys, pitch and mod wheels, and a full set of sound design features that put no limits on the variety of stunning patches you can create. Plus, the UNO Pro Synth takes advantage of its paraphonic design to offer “chord” mode for conjuring mesmerizing pads, stabs, and analog synth textures. For fans of the original UNO Synth, and for those seeking a portable analog synth with serious functionality, the IK Multimedia UNO Synth Pro can’t be missed!

Powerful, digitally controlled analog architecture

When it comes to creating fat, organic synth sounds, nothing beats analog! However, old-school analog synths, with knob- or fader-per-function designs, made it nearly impossible to recall your favorite synth settings, even when recording them by hand in a spiral-bound patch book. However, that’s not the case with the UNO Synth Pro. Although it has a fully analog signal path, including three VCOs, two multimode filters, and two envelope generators, all of the UNO Synth Pro’s parameters can be adjusted digitally via four parameter encoders, one universal data encoder, and dedicated knobs for filter cutoff and resonance. What’s more, once you brew up a brilliant patch, you can save it as a custom preset to revisit again and again — no patch sheets required!

Serves up a VCO triple threat; doubles down on the filters

The UNO Synth Pro’s massive analog growl derives from its 3-variable waveshape filters. Stack them in mono mode for concocting incredibly thick bass patches and multifaceted leads, or get creative in “chord” mode by crafting unique sounds for each oscillator and playing them paraphonically. Next, you have two filter options for shaping the timbre of the oscillators: the original UNO 2-pole OTA multimode filter, and an SSI 2/4-pole filter based on the classic Dave Rossum-improved ladder filter topology. By using the filters together in series or parallel, you have access to over 24 different filter modes! Plus, with the UNO Synth Pro’s PWM, oscillator sync, oscillator FM, ring modulation, dual LFOS, and white noise generator, there are inexhaustible ways to generate evocative sounds.

A synth workstation with 64-step sequencer, arpeggiator, FX, and mod matrix

The UNO Synth Pro’s 64-step sequencer, 10-mode arpeggiator, and deep onboard effects elevate it from a cool little analog synth to a serious sound design workstation. Not only can you sequence notes, but you can also sequence parameter changes, resulting in awesome sonic evolutions and devolutions! The 10-mode arpeggiator is brilliant for creating classic synthwave ostinatos and single-shot harp-like strums. To put the finishing touches on your creation, layer up any of UNO Synth Pro's effects, such as its true-analog overdrive circuit and numerous digital modulators, delays, and reverbs. If all of that wasn’t enough, the UNO Synth Pro also has a 16-point mod matrix, which makes it easy to patch up complicated modulation routing with both internal and external sources.

IK Multimedia UNO Synth Pro Keys 37-key Analog Synthesizer Features:

  • 37-key digitally controlled paraphonic analog synthesizer
  • All-analog signal path with self-tuning oscillators
  • 3 independent analog oscillators with saw, triangle, and pulse waves
  • Oscillator waveforms are continuously variable
  • Osc section also includes pulse-width modulation and white noise generation
  • 2 independent filters: 2-pole OTA multimode filter, and SSI 2/4-pole resonant filter for 24 total filter modes
  • 2 full ADSR envelopes, for both filter and amplitude
  • LFO with saw, square, triangle, sine, random; ring modulator; and white noise generator
  • 40+ parameters at your fingertips, with 4 encoders combined with function buttons
  • Built-in multi-FX, including analog overdrive and digital modulation, delay, and reverbs
  • 10-mode, 4-octave arpeggiator
  • 64-step sequencer with real-time recording and step editing for pitch, CV gate, and mod parameters
  • Audio input for daisy-chaining other synths modules, drum machines, etc.
  • Complete MIDI implementation — all parameters and clock can be controlled via external MIDI Balanced stereo outputs, headphone output, USB, MIDI I/O, and CV/gate connections for integrating with digital audio workstations and hardware synthesizers

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Tech Specs

  • Type: Keyboard Synthesizer with Sequencer
  • Analog/Digital: Analog with Digital Effects
  • Number of Keys: 37
  • Type of Keys: Synth
  • Aftertouch: Yes
  • Other Controllers: Pitchbend, Mod wheel
  • Polyphony: Monophonic, 3-voice Paraphonic Mode
  • Presets: 256 User Presets
  • Oscillators: 3 x VCO
  • Waveforms: Saw, Triangle, Pulse, Square, Sine, Random
  • LFO: 2 x LFO
  • Filter: 2-pole OTA Multimode Filter, SSI 2/4-pole Resonant Filter
  • Envelope Generator: 2 x ADSR (filter, amplitude)
  • Effects Types: Overdrive, Modulation, Delay, Reverb
  • Arpeggiator: Yes
  • Sequencer: 64-step
  • Audio Recording: Real-time with Step Editing
  • Audio Inputs: 1 x 1/8"
  • Audio Outputs: 2 x 1/4" (R/L)
  • Headphones: 1 x 1/8"
  • USB: 1 x Micro-B
  • MIDI I/O: In/Out/USB
  • Other I/O: 4 x 1/8" (CV/gate)
  • Power Source: 5V DC power supply (sold separately)
  • Height: 2.75"
  • Width: 21.65"
  • Depth: 11.8"
  • Weight: 12.8 lbs.
  • Manufacturer Part Number: IP-UNO-SYNTHPRO-IN

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Reviews

Rated 5/5
Small Heavy Weight
I have several synthesizers and was looking for something truly analog to complete my setup, that would have a fat, obese, dense sound, but at the same time gritty, punchy, aggressive, that would stand out in the mix.
Prestigious brands were a heart preference, but totally out of the reach of my budget.
After watching several videos on the internet, I decided to take a chance with this little Italian baby.
The first contact was disappointing. The firmware was out of date and the presets were "empty", but a simple update was enough and the honeymoon began.
For my style of sound - progressive metal, hard rock - this little monster is a perfect fit. I get all the leads I want, plus occasional paraphonic pads and brasses that were a surprise.
It is extremely well built, a little war tank. Even with very poor documentation, so-so customer service, and a bad first contact, the sound and flexibility of this synth are so fantastic for the price that it deserves top marks.
Music background: Prog Metal, Hard Rock
Rated 5/5
Fantastic Synth and Controller!
This has an amazing sound and also the Key Bed is wonderful. It's built like a tank with a beautiful anodized red finish and fits perfectly on my desktop above my little NI m32 controller for a nice 2 keyboard setup. I've really enjoyed!

God bless :)
Music background: Audio Engineering Professor
Rated 5/5
A Hidden Secret
This synth sounds wonderful! It has SSI filters which are a modern version of the SSM filters (and by the same engineer).
It's VERY impressive for a paraphonic synth. The sound is full/fat and warm.
The YouTube videos don't do it justice.
Rated 2.5/5
Great analog synth
Since I have received my Uno Pro, I have built numerous patches on the device. IK Multimedia has now released software that lets you edit patches from your computer. This makes it even easier. Buyer beware though - software, updates, firmware, and add-ons (soundpacks etc...) are ONLY AVAILABLE to the ORIGINAL PURCHASER. This means you'll take a significant hit trying to sell any IK Multimedia hardware on the secondary market. Something to think about. If you are wanting value to be retained in your purchases, you may want to look at other manufactures that don't have such restrictions on secondary purchasers. This is from my personal experience with IK Multimedia.
Rated 1/5
Great for the first couple hours, until it bricked
As the title says, this was a great synth for the few hours I was able to play with it. Then out of nowhere it shut down, and will not turn on, but makes a weird cycling noise. Based on some discussion boards, this seems to be a common issue.

Because I bought it out of warranty, technical support basically said I could either pay to ship it to Italy and wait for a quote, or buy another one.

I understand I ran the risk when buying second hand, and maybe it's just my luck. But I've owned a lot of synths (Korg, Moog, Yamaha, DSI, Waldorf, Roland, Dreadbox, Erica) and none have ever failed like the Uno did.

I can't help but think IK isn't prepared to be making hardware.