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Madrona Labs Aalto v1.9.4
Madrona Labs Kaivo v1.9.4
Madrona Labs Virta v1.9.3

Aalto is a semi-modular software synthesizer with an innovative, customizable user interface, distinctive sounds and charming personality. The Aalto sound engine allows you to create sounds that have been difficult or impossible to make with other software synthesizers until now. Aalto's heart is a sophisticated oscillator inspired by Buchla hardware, with FM, timbres and waveform controls that deliver a wide range of expressive sounds. These sounds are uniquely malleable and lively, in part because they are made by dynamic computation rather than static waves.
Each voice has a separate built-in sequencer, independently controlled by speed and offset, which make it easy to create evolving chaotic textures. Each voice also includes a vactrol emulated bass gate module. Aligning vactrol slows down the response to incoming signals through a complex nonlinear filter. You can adjust the response of vactrol to be immediate or strong.
Next to the bass gate is a waveguide / delay module with a wave shaper and a peak equalizer built into the feedback loop. Because it has such a short and controllable delay time, unlike typical analog delay, it can be used as an additional oscillator.
Subjectively speaking, Aalto can produce a wide range of sounds, from lush to sharp, including some very complex, but not too fat in the mix. Aalto's sounds are not overblown or limited, they are wide, open and natural. We hope that our approach will appeal to experienced sound engineers who have their favorite equalizers and limiters. And for those just getting into synthesis, Aalto is an accurate and honest learning tool.


Virta is a modular synthesizer and effects processor that. When you direct a voice (or any sound) into Virta, the sound analysis engine accurately extracts information about its pitch, timbre and dynamics over time. These new signals can control virtually any parameter in Virta, just like MIDI or OSC. Virta turns voices and instruments into all kinds of crazy sounds. Combining sound analysis module with high quality synthesis modules, Virta brings something truly new to the world of software synthesizers.
Virta can also be a very useful tool for simpler effects. Its processing modules, including the input compressor and pitch shifter with delayed feedback, are very open and transparent. Since this synthesizer is easy to program based on the user interface, Virta is a quick and enjoyable way to get the effect you want.


Kaivo is a semi-modular software synthesizer that combines two powerful ways to create sound: granular synthesis and physics simulation. Kaivo offers the latest research in physics simulation for the first time. In mathematical terms, its discretization-based finite difference time domain method allows the user to "get inside the instrument" and influence internal oscillations at any point. This allows for an accurate level of realistic detail. And while Kaivo is capable of creating very realistic sounds, it is also designed to apply this feature to abstract creations. Kaivo has eight different types of tuned resonators, each with its own complex sound response.