OP-X PRO-3 WiN MAC

Team R2R | 05 November 2025 | WiN: 23.2MB | MAC: 50.9MB

OP-X PRO-3 is a 12-voice semi-modular virtual analog synth based on OP-X PRO-II which includes all sounds and features of OP-X PRO-II and fullfills virtually all requests and wishes from users collected over the recent years. Due to its massive features and flexibility OP-X PRO-3 is able to emulate the typical sounds of almost ANY analog synth of the late 70s and 80s including OB-X, Matrix-12, Jupiter-8, Prophet-5 and even Minimoog. The same as its precedessors did since 2006 the synth engine of OP-X PRO-3 exactly clones the inner working of real voltage controlled polyphonic analog synths of the late 70s and 80s in every tiny detail. This includes that each voice is a completely independend mono-synth sitting on a separate circuit board or in a separate circuit section on a common board and features tuning trimpots to wipe-out the differences caused by device tolerances which usually was done by a technician prior to shipping. For the user the synths usually offered an autotune function which sent an offset voltage to the voice boards to flatten differences which again could arise caused by warm-up drift and thermal shifting of the trimpots and devices. Early synths only offered this for oscillater pitch, but later synths like Matrix-12 also for filters and other parameters. This is offered too in OP-X PRO-3 and the same as in the originals you usually manage the tuning only uning the atotune unit and not by tweaking trimpots everytime which would be cubersome, but with the advantage that you can go forth and back (so tune and detune again) and even can tune or detune seamlessly, so seamlessly blend between the tuned and detuned state.

Aalto v1.9.x WiN MAC

Team R2R | 24 December 2024 | WiN:7.4MB | MAC:12.1MB

Aalto is a semi-modular software synthesizer with an innovative, patchable UI, distinctive sounds, and a charming personality. Aalto’s sound engine lets you create sounds that have been difficult or impossible to make with softsynths before now. The heart of Aalto is a Buchla-inspired complex oscillator, with FM, timbre and waveshape controls that enable a wide range of expressive sounds. These sounds are uniquely malleable and alive, in part because they are made with dynamic calculation, not static wavetables. Aalto is designed as much for sequencing patterns as for playing individual notes. Each voice has a separate, built-in sequencer with a patchable, independently controllable rate and offset that make it easy to achieve evolving, chaotic textures.

Kaivo v1.9.x WiN MAC

Team R2R | 24 December 2024 | WiN: 79.4MB | MAC: 110.3MB

Kaivo is a semi-modular software synthesizer that combines two powerful ways of making sound: granular synthesis and physical modeling. Kaivo brings some of the latest academic research in physical modeling to a patchable package for the first time. Mathematically speaking, its finite difference time domain (FDTD) models let the player reach inside the instrument and affect the internal vibrations at any point. This allows for a fine degree of realistic detail, like the bridge rattles on a “gut string” model, for example. And while Kaivo is capable of making very realistic sounds, it is also designed to apply this subtlety to abstract creations.

Aspect v2.0.3 WiN

Team R2R | 12 July 2024 | 9.1MB

PLATFORM: STANDALONE/VSTi/VST3/AAX(MOD

The Semi-modular polyphonic synthesizer

Analogue modelled sounds. Stunning scalable user interface, with three colour schemes: dark, light, and classic blue. A sound-designers dream. Flexible cable-free semi-modular routing via drag and drop encourages experimentation. Use audio sources as modulations, and modulations as audio sources. Combine and process modulation sources with mappers, quantizers, rectifiers, sample and holds, and many more processing modules. Over 600 factory presets.

PS-3300 v1.0.4.54 WiN

Team R2R | 17 October 2023 | 20.62 MB

PLATFORM: STANDALONE/VSTi/VST3/AAX(MOD)

PS-3300 is an exactingly faithful virtual analog emulation of the colossal and ultra-rare semi-modular analog polyphonic synthesizer released by KORG in 1977. Cherry Audio has pulled out all the stops to accurately recreate and update this mythical monster synth, from its massive stacked sonic character and signature multiple‑resonator sweeps to the considerable patching capabilities that distinguished the PS-3300 from all other polysynths of the era.