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Set the Scene and Seize Your Sound





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Synthesis, sound design, and music production have never been more accessible, and the increasingly blurry boundary between physical, virtual, analog, and digital modes of music making has led to a cross-pollination of interfacing options that stand to enrich any creative venture. With the Catalyst Controller Eurorack module, 4ms reimagines your architectonic relationship to performance and composition with a 20HP powerhouse that lets you build a path to navigate your sound. Its eight dedicated outputs feature dual-purpose functionality for both Gate and CV signals, impressing Sweetwater’s synthesists with its capacity to manage both simultaneously. An ultra-smooth horizontal crossfader allows you to manually transition between channels, but accompanying inputs for Trigger and CV signals promote a combinatorial explosion of interoperative modulation with your setup. And with eight selectable scenes comprising eight channels each, the Catalyst Controller becomes a formidable force of symphonic synthesis possibilities.





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With its Catalyst Controller, 4ms have created a macro controller for your Eurorack rig, with 64 scenes of malleable musicality that can be as linear or dynamic as you need. Its voltage-controllable Pathway crossfader not only promotes an extensive array of interoperative configurations, but its morphing behavior between scenes can have its slew or lag time set to manage the speed of your scenes’ transformations. Plus, with each output capable of individually adjustable morph times, a supplementary dimension of temporal adjustment emerges to complement the linearity-breaking possibilities of hands-on control via the Pathway slider and manual scene-triggering backlit buttons. Moreover, CV outputs can be adjusted across several ranges, including ±5V, capping at 5V, 3V, or 1V, as well as its stock configuration of -5V to 10V. Further depth of control is granted with the Catalyst Controller by way of flexible quantization options, including commonplace scales, but you can go completely unquantized with confidence, thanks to its <1mV resolution. Crossfader motion can be recorded and replayed for up to 20 seconds of activity, with detailed copy/paste functions aiding in creative ideation or deploy the randomizer to inject controlled chaos into your set.





Chaos, control, and total transformation





Bear with us here, but there’s more to this cutting-edge controller than you might imagine. In fact, through holding down a specific combination of buttons, the Catalyst Controller transforms into an entirely different module: the Catalyst Sequencer. Each module shares this dual functionality, and if you decide you like one more than the other, you can even remove the faceplate, flip it over, and re-install it, thanks to the double-sided artwork that features the necessary visuals for both modules.





4ms Catalyst Controller Eurorack Module Features:


Malleable macro controller module offers dynamic, musical approaches to scene and track building in an economical 20HP package


8-channel configuration lets you build comprehensive Pathways that can be strung together as scenes to morph between for seamless, yet deliberate sonic elements


Ergonomic crossfader allows for hands-on management of scene changes can be controlled via external CV for immense interoperative possibilities


8 dedicated outputs can simultaneously accommodate CV and Gate signals for added depth


64-scene range provides ample room for complex constructions with manual triggering via backlit face buttons


Morphing behavior can be adjusted for each output to support flexible temporal configurations


Variable slew and lag limits allows for precise control of speed changes with scenes


Variable CV output values and detailed quantization configurations ensure maximum musical flexibility and control


Channel values and gates can be randomized globally or per channel, introducing a variable degree of controlled chaos


Malleable copy/paste options for pages and entire channels let streamline creative workflow


Motion recording and playback provides up to 20 seconds of repeatable performance


Can be transformed to function as the 4ms Catalyst Sequencer for an entire second module’s worth of performance options, with module art printed on the double-sided faceplate