IMFMSynth is a software instrument built around eight freely connected operators that can use either sine waves or wavetables. I started it to make FM’s modulation relationships easier to see and explore: you can draw signal paths, adjust connection depth and phase, and use wavetable operators as part of an FM patch. The official page also documents DX7 bank import, a browser demo, and plug-in builds for Windows and macOS. Check the official IMFMSynth page for current availability and system details.
Why I built IMFMSynth
FM can produce compelling sounds, but designing a patch from scratch can be difficult when the modulation relationships are hard to follow. In my launch post, I describe IMFMSynth as an attempt to make those relationships more visible through a modern routing interface, while letting operators use wavetables as well as sine waves. I had producers, composers, and arrangers in mind, including people who want a more approachable way to explore what FM is doing to a sound. These are the goals behind the design, not a claim that every user will find FM easy.
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One learning path I describe is to begin with a wavetable-shaped sound and then apply FM to emphasize its attack. That example illustrates the instrument’s premise: an operator need not be limited to a sine wave, and its role in a patch can be explored through the drawn signal paths.
Do these 3 things before closing this tab:
1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsRead my launch post for the project’s motivation and the browser demo details.
#1 Best Overall
- Full Creative Control - A dynamic 37-Key MPK Mini keybed for 3 full octaves of melodic and harmonic performance; Easily connect to your DAW or studio equipment with the USB-powered MIDI Controller
- Advanced Connectivity - Connect to different sound sources with CV/Gate and MIDI I/O; Control modular gear, sound modules, synthesizers, and more to bring new sound sources into your music production
- Native Kontrol Standard (NKS) Integration - Akai Professional and Native Instruments have partnered to bring NKS support to the MPK Controller series, get ready to Kontrol straight from your MPK
- Choose Your Exclusive Complimentary NKS Bundle - Browse and control Native Instruments presets and sound libraries; select one of three curated Komplete 15 Select bundles: Beats, Band, or Electronic
- Record and Compose Without a Computer - Connect to your production station and use the built-in 64-step sequencer featuring one track for drums and one for melodies or chords, with up to 8 notes each
How the eight-operator design works
Draw connections instead of choosing only a fixed algorithm
The central interface puts operators, filters, and output in a routing view where you can draw connections. The product page describes eight freely wired operators: one can modulate another, with controls for connection depth and phase, and operators can feed back into themselves. You can start from one of 32 algorithms, or use the routing view to shape a different signal path.
Use wavetables as operator sources
An operator can play a wavetable instead of a sine. The official page says the scan position can be modulated and that Serum and Vital WAV tables load directly. This is file support for compatible wavetable audio files; it does not mean IMFMSynth is a Serum or Vital plug-in or that their full presets and instruments are imported.
Rank #2
- Mini Keys, Major Performance - 25-key MIDI controller keyboard with responsive keys to play with feel and dynamics; Enjoy expressive songwriting, composing, jamming, playing melodies, bass lines, and more
- Full Range Experience - Play every note with ease; Use the dedicated octave up and down buttons to transpose the range of your software instruments plus a sustain button for expressive performances
- Feature Packed - Use the built-in arpeggiator and clock for creative control of any of your sound sources like software instruments, synthesizers, or USB-enabled modular gear, all by one USB cable
- Customized Production - With 8 programmable preset slots you can instantly recall your mappings for DAWs, virtual instruments, and more; Create, edit, and manage all your presets from the computer
- Versatile Performance - The USB Studio MIDI controller is perfect for your songwriting, beat-making, and DJ remixes whenever you're inspired; The sleek design fits alongside your studio equipment
Shape envelopes, modulation, and tone
The product page also lists hand-drawn, multi-point envelopes with per-segment curves and loop and sustain points; four modulation slots; and six LFO shapes. Operators have hard-sync and ring-modulation options. For tone shaping and effects, the documented signal chain includes three filter stages and an effects rack with drive, chorus, delay, reverb, and 8-bit reduction.
What comes with the instrument
The official page says IMFMSynth includes 30 presets created by the developer. It also documents importing DX7 .syx banks: all 32 voices in an imported bank become editable patches. That is a file-import feature; you do not need a physical DX7 to use it.
Rank #3
- Music Production and Beat Maker Essential -USB powered MIDI controller with 25 mini MIDI keyboard velocity-sensitive keys for studio production, virtual synthesizer control and beat production
- Total Control of your Production - Innovative 4-way thumbstick for dynamic pitch and modulation control, plus a built-in arpeggiator with adjustable resolution, range and modes
- Native Kontrol Standard (NKS) Integration - Akai Professional and Native Instruments have partnered to bring NKS support to the MPK Controller series, get ready to Kontrol straight from your MPK
- Choose Your Exclusive Complimentary NKS Bundle - Browse and control Native Instruments presets and sound libraries; select one of three curated Komplete 15 Select bundles: Beats, Band, or Electronic
- The MPC Experience - 8 backlit velocity-sensitive MPC-style MIDI beat pads with Note Repeat and Full Level for programming drums, triggering samples and controlling virtual synthesizer / DAW controls
The product page presents IMFMSynth as a downloadable plug-in, not a hardware keyboard. Formats and listed operating-system support are:
| Platform | Listed operating-system support | Plug-in formats |
|---|---|---|
| Windows | Windows 10 or later; x64 and ARM64 | VST3 and CLAP |
| macOS | macOS 10.15 or later; Intel and Apple silicon | VST3, AU, and CLAP |
These are the requirements stated on the official page; check it for current builds and any changes before installing. The page also warns that the Windows installer is currently unsigned and may trigger a Microsoft SmartScreen warning.
Rank #4
- Next-Gen Music Production and Beat Maker Essential - USB-powered MIDI keyboard controller with 25 mini velocity-sensitive keys, optimized for studio or beat production, piano-style performance, synth leads, sample triggering
- Real-Time Control and Navigation - 8x assignable 360° knobs, a vibrant full-color screen and push/turn encoder for hands-on access to settings, presets, and DAW functions, without reaching for a computer
- Iconic MPC Pads with RGB Feedback - 8 velocity- and pressure-sensitive MPC pads deliver an iconic finger-drumming experience, plus dynamic visual feedback to match your performance in studio or on the go
- Studio Instrument Collection Included - A powerful VST/AU and standalone virtual suite packing 1000+ pro-grade drums, keys, synths, bass, FX from AIR, Akai Pro and Moog, plus MPK Mini IV integrated controls
- Pre-Mapped DAW Integration - Get producing in under 15 minutes with Ableton Live Lite 12, Logic Pro, FL Studio and more; comes with an expanded DAW-mapped transport section for uninterrupted workflow
Try IMFMSynth in a browser
The official page says the browser version uses the same C++ DSP as the VST3, compiled to WebAssembly. In my launch post, I say the demo requires no account, but leaves out some presets and file import/export. It can give you a way to explore the sound engine and interface; the available information does not establish that it tests DAW integration or every feature of the downloadable plug-in.
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At the time the official page was reviewed for this article, it displayed a $19 one-time launch price, a license for three devices, and offline license verification after initial activation. The page said the planned price would become $29 after 100 buyers. These are the developer’s displayed offer and threshold, not a guarantee of the price or terms available now; verify the checkout page before purchasing.
Quick Recap
Best Value
- Full Creative Control - A dynamic 37-Key MPK Mini keybed for 3 full octaves of melodic and harmonic performance; Easily connect to your DAW or studio equipment with the USB-powered MIDI Controller
- Advanced Connectivity - Connect to different sound sources with CV/Gate and MIDI I/O; Control modular gear, sound modules, synthesizers, and more to bring new sound sources into your music production
- Native Kontrol Standard (NKS) Integration - Akai Professional and Native Instruments have partnered to bring NKS support to the MPK Controller series, get ready to Kontrol straight from your MPK
- Choose Your Exclusive Complimentary NKS Bundle - Browse and control Native Instruments presets and sound libraries; select one of three curated Komplete 15 Select bundles: Beats, Band, or Electronic
- Record and Compose Without a Computer - Connect to your production station and use the built-in 64-step sequencer featuring one track for drums and one for melodies or chords, with up to 8 notes each
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
