Sylenth1

At a glance

• Editor score
  7.5 / 10
• Pricing
  Paid
• Best for
  Accessible classic-style polyphonic synthesis
• Free plan
  No
• Paid from
  €9.95/mo
• Synthesis engine
  Analog_modeling
• Facts checked
  21 Sep 2026

• Where it wins

  • Four unison oscillators, dual filters, and 16-note polyphony
  • Includes 2,500+ presets, seven effects, and an onboard browser
  • Supports VST, AU, and AAX formats with two-computer activation

• Where it doesn't

  • Requires compatible host software rather than offering a standalone app
  • Runs on Windows and macOS only
  • No free plan; the monthly option is an installment plan

Our verdict on Sylenth1

Sylenth1 is a virtual analog synthesizer plug-in for Windows and macOS, designed for use inside compatible host software. It suits producers and performers who want classic-style polyphonic synthesis with an approachable feature set. Its core engine combines four bandlimited unison oscillators, two stereo multimode filters with analog emulation, 16-note polyphony, ADSR envelopes, LFO modulation, and 16 modulation slots. An arpeggiator with a built-in step sequencer, seven effects, MIDI CC/RPN/NRPN control, and an onboard preset browser extend its sound-design and performance options.

Pricing is structured around one full license rather than separate feature tiers. The Full version costs €139 as a one-time purchase and includes VST, AU, and AAX formats, more than 2,500 presets, activations for two computers, and free updates. A Monthly payment plan costs €9.95 per month. The license is supplied after the first payment, the plan can be stopped and resumed, and the license is retained after all installments are paid. This makes the monthly option a way to spread the cost of the full license, not a separate lower-cost subscription edition.

Sylenth1’s strongest fit is for musicians who want a dedicated synthesizer with substantial modulation, sequencing, effects, and preset breadth without moving beyond a plug-in workflow. The multiple formats support common host environments, while the Windows and macOS coverage accommodates both major desktop platforms. It is less suitable for anyone needing a standalone application, a free entry point, or broader platform coverage. Choose it for focused virtual-analog sound design and classic polyphonic tones; consider another instrument if host-independent operation is central to your setup.

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Sylenth1 pricing

All 2 Sylenth1 plans and prices →

Sylenth1 fact sheet

Alternatives to Sylenth1

• Arturia V Collection 11A broad, preset-focused instrument collection with clear Intro and Pro options.9.3
• KKontakt 8A broad sample-library platform with serious synthesis and DAW integration.9.1
• DDivaA deep analogue-style plug-in with broad modulation, effects and host-format support.8.8

See all Sylenth1 alternatives →

Featured on iTechGuides

Sylenth1 is listed in our Software Synthesizers directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update