Ragnarök – v2.0.2 [29-May-2025]

Ragnarök is a software instrument for Microsoft Windows (VST2/VST3/CLAP/AAX) and Apple macOS (VST2/VST3/CLAP/AU/AAX) simulating a custom-built one-of-a-kind analog synthesizer from 1980. It is written in native C++ code for high performance and low CPU consumption.

Ragnarök is the collaborative work of Hans Peter aka CrimsonWarlock aka TechnoGremlin (synth concept, GUI design, user manual, patch programming) and Björn aka Full Bucket (DSP+GUI+patch programming). Read more about the background of this project in the user manual and in the respective KVR thread!

The main features of Ragnarök are:

• Up to 64 voices polyphony including portamento
• Unique band-limited oscillator bank
• Additional white noise generator
• Multi-pole zero-delay feedback filter (6–12–18–24 dB/Oct low- or high-pass)
• Two envelopes (ADSR or AD) with exponential slopes
• Low frequency oscillator
• Built-in and Chorus effect plus 7 band graphic equalizer
• Cool repeat/pseudo arpeggiator functionality
• Supports MTS-ESP by ODDSound dynamic micro-tuning
• Resizable user interface (not "N" version!)
• MIDI Learn – all parameters can be controlled by MIDI CC
• Plug-in supports Windows and macOS

On Hans Peter's track "Midsummernight Love Affair", Ragnarök (version 1) is the only audio source (plus some delay, reverb and slight compression).

Learn how to install Ragnarök on your Mac!

Ragnarök Version 1 is still available:

Kraftraum, Animehaus, and stvrsz have created many amazing presets for Ragnarök which are exclusively available for download here:

Even more presets can be found at here at KVR!

Ragnarök Version 1 was subject of KVR's One Synth Challenge #70 (OSC).
Go to the official OSC website and listen to the submissions of this great event!

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