NuRack is an AUv3 based multi-channel audio and MIDI effects processor that offers a unique feature - the ability to design your own custom effects using the 80+ building blocks provided. With NuRack, you have full control over routing, allowing you to create complex audio paths in series or parallel.

The program offers two modes of operation. The first mode provides 3 customizable effects racks that can be switched manually or via MIDI, allowing for seamless transitions between effects. The second mode allows audio to be routed through 3 independent audio racks.

NuRack comes with a generous selection of over 80 audio and MIDI building blocks, covering 12 different categories of effects. These include modulation effects like chorus, flanger, and phaser, time-based effects like stereo delay and reverb, spectral effects like EQ and pitch shift, dynamic effects like compression and gating, filter effects, MIDI effects, generator modules, and automation tools.

In addition to the building blocks, NuRack also provides the ability to split and combine audio signals using splitters and mixers, as well as various visual elements like VU meters and LED meters.

The program offers extensive automation options, allowing you to control knobs and sliders remotely using touch, MIDI input, or peak/rms level detection. You can also create custom interfaces using the built-in Interface Builder, where you can drag, drop, resize, and color elements as desired.

NuRack is compatible with AUv3 plugin hosts and can run in both MIDI and non-MIDI modes. It also supports dark and light modes, providing a visually pleasing experience.

For demos and tutorials of NuRack, you can check out the YouTube channel 'Paul the MusicMan'.

Overall, NuRack is a powerful and versatile tool for musicians and audio enthusiasts, offering the ability to design and create unique custom effects for your audio projects.