Custom built plug-ins for Reason Rock solid instruments, tools & effects, fully integrated with your rack.

Free 30 day trials

We offer fully functional, free 30 day trials on all Rack Extensions in our shop. Just click the TRY button to automatically install any RE of your choice. Learn more in our How to try a Rack Extension video.

Fully Integrated

Rack Extensions blend seamlessly in the Reason rack. Load them in Combinators, route cables on the back, automate all parameters & experiment with the safety of undo.

Huge variety

The Propellerhead Shop currently offers more than 280 instruments, tools and effects, and we're constantly adding more – with over 1000 companies developing, the Rack Extension platform is growing every day.

…from your favorite developers

Korg, Rob Papen, McDSP, Softube and many more. A world of creative and inspiring plugins from some of the most renowned and popular developers out there means you will always have what you need to take your music further.

It's easy to try a Rack Extension for free

All Rack Extensions are yours to try for a month! Browse all Rack Extensions in the Propellerhead Shop and download fully functional trial versions to load into your rack. All your Rack Extensions can be downloaded as many times as you need – for both Mac & Windows.

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How to try a Rack Extension3:55

Rack Extensions made by Propellerhead

It’s not just third parties who have created Rack Extensions… Propellerhead Software has also released their own Rack Extension devices for Reason & Reason Essentials. Discover more about all Propellerhead Rack Extensions below.

Pop Chords A-list Electric Guitarist

A solid rhythm guitar is the harmonic backbone of your song. Pop Chords combines the creative freedom of a top-notch performer with the accessibility and ease of use of using audio loops. Simply play your MIDI keyboard and Pop Chords start playing. Create chord progression, explore alternate voicings and find just the sound your music needs.

Power Chords A-list Electric Guitarist

Add living, powerful electric guitar to your songs with A-List Electric Guitarist Power Chords, a Rack Extension for Reason. Play one-finger chord progressions from your MIDI keyboard and have full control over playing styles and sound. With A-List Electric Guitarist Power Chords, creating guitar tracks is dead easy.

A-list Acoustic Guitarist

A-list Acoustic Guitarist puts the sound of a world-class studio guitarist in your Reason rack. Combining the flexibility of a real instrument in the hands of an outstanding performer with the ease of use of audio loops, you will be creating realistic and inspiring guitar performances in a matter of seconds.


Building on the SDK2 technology, Synchronous is an inspiring modulation Rack Extension plugin for Reason that offers rhythmically synced effects that bring you music to life. With a dynamic and intuitive graphical user interface and the ability to instantly recall over 100 patches, Synchronous is incredibly flexible.


Parsec Spectral Synthesizer brings the futuristic sound of additive synthesis for the Reason Rack. With two independent sound engines, up to 1024 oscillators, a wide range of sound sculpting tools, built-in effects and free modulation routing, Parsec won’t leave you wishing when it comes to sonic horse-powers.

Boasting a state-of-the-art synthesis engine and an inviting user interface, Parsec was designed for the novice and the PhD of sound synthesis alike. The comprehensive sound bank with patches spanning everything from crisp, digital sounding leads to lush and evolving pad sounds, rich sonic textures and instrument sounds, will make an excellent starting point to explore the sounds of Parsec. Once you are ready to dive further, the easy to grasp interface will have you creating your own otherworldly sounds in no time.


Audiomatic Retro Transformer is a psycho-acoustic future retro effect, inspired by mobile photo apps. Add Audiomatic to any instrument, channel or group — or the whole mix — and select one of the 16 snapshots: VHS, vinyl, gadget or even mp3, to instantly sprinkle audio magic over your tracks.

Audiomatic is included free in Reason version 7 but is available to owners of Reason 6.5 and Reason Essentials too, as a separate purchase.


Introducing Rotor, a rotary speaker Rack Extension. Meticulously modeled on the Leslie 122, Rotor brings the sound of the classic rotary speaker design from the 1940's to the Reason rack.

Rotor is perfect for authentic organ sounds, old-school guitar tones or as a unique shaper in your sound design toolbox. Whatever you use it for, Rotor will add a vintage flavor to your Reason rack.

PX7 FM Synthesizer

The PX7 FM Synthesizer is a six operator FM synth for the Reason rack. A faithful recreation of the popular DX series keyboards, it provides a wealth of new sounds, ranging from classic 80’s bass and brass to modern textures, leads and growls.

But PX7 is not only an emulation of a classic keyboard. With an easier interface, macro controls for quick and powerful tweaking of sounds, stereo spread, and full integration with the Reason rack, it takes FM synthesis into the age of Reason.

Radical Keys

Radical Keys brings you three classic keyboard instruments in a great-sounding package: the Rhodes Mk1, the Wurlitzer and the Pianet-T. All delivered through Propellerhead’s cutting edge Radical Engine, that combines samples with physical modeling to bring out the character and quirks of these legendary instruments, Radical Keys delivers infinitely tweakable, instantly playable instrument whose sonic capabilities range from the ultra realistic to the utterly outlandish.

Radical Piano

The premise is simple. The results are stunning. We’ll give you three basic pianos paired with the technology to make an infinite number of your own. Based on a custom blend between sampling technology and physical modeling algorithms, Radical Piano affords songwriters, producers, and sound designers an unprecedented level of control to craft a realistic piano that is 100% unique.


Pulsar LGM-1 is a dual channel modulation powerhouse for the Reason rack. We call it an LFO—but it’s also a powerful little synth in its own right. For tweakers, Pulsar makes every single thing in the rack a little bit better. For back-of-the-rackophobes it comes with patches containing everything from lush evolving pads to the grittiest of wobble basses.

Need to add slow modulation to a filter, or alter the speed of a tremolo as you trigger new notes? Pulsar is up for any task. Turn up the Shuffle parameter to introduce some irregularity to your modulation. Smooth out sharp waveforms using Lag. Or go all-out bonkers and let LFO2 trigger the built-in envelope, set to change the rate of LFO2, and route the combined outputs of both LFOs to control the rate of LFO1.


Polar is an old school harmonizing and pitch-shifter effect with a host of modern tricks up its sleeves. Use it for classic harmonizing, stereo-widening, and realtime pitch-shifting, or experiment with buffer looping and audio freezing to create otherworldly effects.

Load up Polar in the rack, and it will instantly make your sounds wider. Introduce slight pitch-shifting to make it even bigger. Turn the Shifters to add harmonics — up to two octaves above — or radically change the pitch down to two octaves below.

If you are a singer, producer, guitarist or remixer who is looking for transparent pitch-shifting, creative ways of turning bland recordings into wide, evolving soundscapes — or want to completely mangle a sound into an interesting mess, Polar brings all this and much more to your Reason rack.

* All product names used are trademarks of their respective owners, and in no way constitute an association or affiliation with Propellerhead Software or companies interviewed. Any products or trademarks mentioned are solely used to identify the products whose sound was studied during development and/or for comparison purposes only.

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