OXI Instruments OXI ONE: Mastering CV & Gate Modulation for Modular Mayhem

The video opens by positioning the OXI ONE as a central hub for CV and gate modulation, setting the stage for a hands-on exploration of its capabilities. OXI Instruments makes it clear that this device isn’t just a sequencer—it’s designed to be the brain of a modular or hybrid setup, handling everything from melodic sequencing to nuanced modulation duties.

Right from the start, the acid patch example hints at the kind of dynamic control on offer. The OXI ONE’s ability to send out multiple CV and gate signals means it can shape timbre, trigger accents, and even drive effects, all from a single interface. This approach is about more than just triggering notes; it’s about sculpting the entire patch in real time.

Diving into the modulation lanes, the video demonstrates how CV outputs can be assigned to modulate parameters like timbre on the Coral module. The workflow is direct: select a mod lane, assign it to a CV output, and then shape the modulation either manually, with randomisation, or by drawing curves by hand. This flexibility allows for expressive, evolving sound design that goes far beyond static step sequencing.

Accents are handled with similar finesse. By routing gate outputs to accent inputs—such as the amp input on Coral—the OXI ONE injects rhythmic variation reminiscent of classic acid lines. The accent function is not just a binary on/off; it’s tied to velocity and threshold settings, so the intensity of each accent can be tailored to the patch, adding that extra bit of groove and character.

Threshold functions are shown as a way to trigger events based on modulation levels—when a mod lane crosses a set value, a gate is sent to another module, such as triggering a sweat parameter on MetaFX. This opens up possibilities for patches that respond dynamically to evolving modulation, rather than just fixed step events.

Clocking is also addressed, with the OXI ONE able to send different time divisions to external gear. For example, the Buchla Easel can be synced to a slower clock division than the main sequence, allowing for polyrhythms or complex timing relationships. The ability to adjust these divisions in real time means the OXI ONE isn’t just a static brain—it’s a live performance tool for shaping the pulse of a modular system.

Finally, the video explores polyphonic sequencing and voice allocation. The OXI ONE allows users to select how many voices to output, making it straightforward to set up chords or polyphonic melodies in a modular environment. This is a significant step beyond the typical monophonic sequencing found in many Eurorack setups.

Voice allocation modes—such as last recently used (LRU) and unison—are explained, highlighting how the OXI ONE distributes notes across available CV and gate pairs. This flexibility is crucial for those looking to sequence complex arrangements or layer multiple voices without manual repatching.

The tutorial wraps up by reinforcing the OXI ONE’s strengths as a CV/gate master, capable of handling everything from acid basslines to polyphonic soundscapes. The workflow remains hands-on and immediate, with voice allocation and modulation tools that invite creative patching and real-time experimentation.