LennarDigital Sylenth1

Active

Country: Netherlands (NL)
Founded: 2006
Developer: LennarDigital
Pricing: $139 one-time purchase
Open source: No
Platforms: Windows, macOS

Indexes

Audio/Music Production

Overview

Sylenth1 is a virtual analog VSTi synthesizer plugin designed for music production, featuring 4 alias-free unison oscillators that generate analog-shaped waveforms, each capable of 8 voices for up to 32 voices per note and 16-note polyphony.¹² It includes analog-style filters with nonlinear saturation, modulation options like 2 ADSR envelopes and 2 LFOs, an arpeggiator, distortion effects, and a master effects section, targeted at producers seeking high-quality sounds with low CPU usage in digital audio workstations.¹²³

Key Features

Unison Oscillators - 4 alias-free oscillators, each producing 8 unison voices in stereo for up to 32 voices per note and 512 simultaneous voices with 16-note polyphony.
Analog Filters - 2 filter sections with 4 stages, nonlinear saturation, high resonance, and drive for warm, raw analog emulation.
Modulation - 2 ADSR envelopes, 2 LFOs, plus velocity, keyboard track, and modulation wheel for parameter control.
Arpeggiator - 10 melodic modes with step sequencer, adjustable pitch, velocity, and hold; outputs step velocity as modulation.
Distortion - 5 types (overdrive, foldback, clip, decimator, bitcrusher) in stereo with 4x oversampling.
Master Effects - 8 effects including chorus, reverb, delay, and compression in an LCD panel structure.
Preset Bank - Factory presets for leads, basses, pads, and strings demonstrating versatile sound design.

Pricing

Plan	Price	Includes
Standard Edition	$139	Full synthesizer with all oscillators, filters, modulation, effects, and presets.

Platforms & Requirements

Sylenth1 runs as a VST, VST3, AU, and AAX plugin on Windows (7 or later) and macOS (10.10 or later), with recent updates fixing Windows 11 and macOS issues like automation in Ableton and Reason.⁶⁷ It uses optimized code and SSE instructions for minimal CPU usage, automatically disabling unused parts.² No native Linux, mobile, or web support.

Integrations & Ecosystem

VST/VST3 hosts (e.g., Ableton Live, FL Studio)
AU hosts (macOS DAWs like Logic Pro)
AAX for Pro Tools
MIDI modulation via envelopes, LFOs, velocity, mod wheel
Preset import/export in .fxp/.fxb formats
Automation parameter control in DAWs
Step sequencer output as modulation source

Alternatives

App	Difference
Serum	Wavetable synthesis with visual editor vs. Sylenth1's analog modeling and unison oscillators.
Massive X	Advanced wavetable and performance macros vs. Sylenth1's focus on analog warmth and low CPU.
Omnisphere	Sample-based hybrid with vast library vs. Sylenth1's pure subtractive synthesis.
Nexus	ROMpler with expansive presets vs. Sylenth1's programmable analog synth engine.

Reputation

Sylenth1 is widely regarded for its exceptional analog-style sound quality, warmth, and clarity that rivals hardware synths, with usable presets and low CPU demands making it a staple in professional production.¹⁴ Reviews praise its ease of use, powerful unison oscillators, and effects, though some note limitations like no serial filter routing.⁴ It maintains strong user loyalty despite age, with ongoing updates addressing modern OS compatibility.⁶ Criticisms include a dated interface in recent versions, but sound remains a key strength.³⁴

Sources (8)