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Propellerhead PX7 FM Synthesizer

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Page last updated Feb 06, 2026

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Description

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Unlock a universe of sonic possibilities with the Propellerhead PX7 FM Synthesizer, a standout addition to your Reason rack. Inspired by the iconic FM synthesizers of the 1980s, the PX7 brings the power of six-operator FM synthesis to your fingertips, offering both classic tones and futuristic sounds. With 32 algorithms at your disposal, this synth plugin allows for intricate sound design without overwhelming complexity.

The PX7 is ideal for musicians who want to explore FM synthesis without needing a deep dive into its complexities—its intuitive interface does the heavy lifting for you. The advanced envelope generator and macro controls provide unparalleled flexibility, turning sound tweaking into an effortless and enjoyable process. Whether you're crafting lush basslines, shimmering keys, or brass sounds straight out of the '80s, this plugin has you covered.

One of the standout features of the PX7 is its ability to integrate seamlessly into the Reason environment, offering a smooth and stable experience free from the typical plugin headaches of compatibility and crashes. Moreover, the PX7 includes a treasure trove of presets and the capability to convert Yamaha DX7 patches, broadening your sonic palette even further. For those eager to push boundaries, combining two PX7 synths in a Combinator lets you create layered, complex sounds with ease.

Key Features:

Six-operator FM synthesis for authentic sound design
32 selectable algorithms for versatile audio creation
Advanced envelope generator for precise modulation control
Includes classic and modern presets for diverse sound options
Macro controls for fast and easy sound manipulation
Seamless Reason integration with Propellerhead's Rack Extensions
Convert Yamaha DX7 patches to PX7 format
CV control for operator levels from any Reason rack device
Layer sounds effortlessly with Combinator integration

Videos

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Reason Studios

PX7 FM Synthesizer - Rack Extension

Reason Studios

Dubspot First Look: The Propellerhead PX7 FM Synthesizer In Reason 6.5 w/ Chris Petti

Dubspot

Spending Some Time With Propellerhead PX7 FM Synthesizer Rack Extension

Kev West

Reviews

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Propellerhead PX7 FM Synthesizer.

Features and functionality

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PX7 allows for extensive modulation through CV emulation in Reason, offering more parameters to tweak compared to traditional rack setups.
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PX7's FM synthesis is likened to subtractive synthesis, where adding operators is akin to adding waveforms, with volume acting as a filter for harmonics.
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The random slider in PX7 isn't automatable, but manually adjusting it while automation is armed creates multiple automation lanes for affected parameters.
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Comparisons

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PX7 is noted for its ability to convert DX7 patches, similar to FM8 and Hexter, but with unique capabilities within Reason.
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For those needing a budget-friendly option, Dexed is highlighted as a DX7 emulator comparable to FM8, with robust community resources for learning.
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User experience

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Owners report an overwhelming number of patches available, with collections exceeding 70,000, providing vast sound variety.
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Beginners find FM8's matrix easier to understand compared to Sytrus, suggesting UI clarity is crucial for learning FM synthesis effectively.
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Use cases and applications

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The PX7's FM synthesis is praised for generating complex growls and vocal/formant sounds, which are particularly favored in dubstep and electro production.
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Modulating with harmonics results in tonal sounds ideal for synth use, while non-harmonics create atonal sounds, better suited for percussive elements.
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Users appreciate the intuitive graphic patching interface, which is seen as more user-friendly compared to other Reason synths like Parsec and Zero.
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Software and compatibility

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Users express envy towards Reason users due to PX7's patch conversion feature, which is not as straightforward in other DAWs.
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Users note that Dexed can import DX7 patches, serving as a viable free alternative for FM synthesis in Reason alongside PX7.
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PX7 was discontinued due to licensing issues, which led to speculation that its technology was repackaged into newer synth offerings by Reason Studios.
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Value and pricing

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Some owners are hesitant to purchase due to the high price, preferring to wait for potential inclusion in future Reason updates or seasonal sales.
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