Nexus

Advanced Macro Controller

Nexus brings the unique keyframing concept of Frames back to the Eurorack format. While retaining the same 18hp width as the original, Nexus provides eight more VCA channels, a faster workflow, an improved hardware spec, and numerous new features intended to provide an unprecedented level of control over complex modular patches.

Keyframing is a technique borrowed from digital animation. A keyframe marks the VCA levels of 12 different channels at a single moment in time. Up to 32 keyframes can be stored on a timeline, and the timeline position is controlled by a single large knob. When the timeline position is changed and levels vary between keyframes on the same channel, various interpolation algorithms may be applied to create smooth transitions between different levels. The timeline position can be controlled manually by turning the large knob, modulated by an external control voltage, or sequenced with a trigger source.

The open-ended nature of the keyframing concept makes Nexus incredibly versatile. With the ability to both process external signals and generate control voltages, Nexus can be used as a mixer, sequencer, LFO, envelope generator, attenuator, clock divider, sequential switch, stereo or quadraphonic panner, multi-channel crossfader, and more. Many of these functions can be patched simultaneously, providing extensive serial or parallel processing of audio and control voltages. This functionality can be further extended with new randomization options, including the ability to randomize keyframe levels and randomly step through keyframes using an external trigger source.

Stereo operation is simplified with individual mix outputs for each row (representing separate left and right mixes) and internal mono-to-stereo normalizations. The redesigned user interface allows for editing of multiple channels simultaneously, copying keyframes to new timeline positions, and saving up to 12 user presets. The core circuitry has also been upgraded to eliminate audio bleed and provide precise output level calibration. The VCAs are digitally controlled but the signal path remains entirely analog.

https://grayscale.info/nexus/