Sylenth1 review
A focused virtual-analog synth with broad modulation, effects, and preset coverage.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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.
Sylenth1 pros and cons
- 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
Sylenth1 fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update