Aalto is a semi-modular software synthesizer known for its patchable interface and unique sound character. Its design focuses on providing a distinctive sonic palette that stands out from conventional softsynths. At the core of Aalto is a sophisticated oscillator featuring frequency modulation, timbre, and waveshape controls, allowing users to craft expressive and complex tones rarely achievable with typical synthesizers.

Each voice in Aalto includes additional sound-shaping components such as a lowpass gate, a patchable waveguide or delay, and a multimode filter. These elements contribute to the creation of rich textures and dynamic sounds. The synthesizer is built not only for playing notes but also for sequencing patterns, with an independent sequencer for each voice. This sequencer offers controllable rate and offset settings, enabling evolving and intricate rhythmic patterns that add depth and movement to any composition.

Aalto's user interface is streamlined and intuitive, designed to make complex patching accessible and fast. Controls are visually organized with signal dials that provide clear parameter feedback, ensuring every adjustment is immediately visible and easy to manage. The interface keeps all functions on screen without clutter, supporting a smooth workflow. Additionally, the synthesizer includes over 100 presets crafted by renowned artists, offering a wide range of inspiring sounds to jumpstart creativity.