

Preserving the core principles of The Godfather - four channels, advanced effects, and creative routing - The Don completely redesigns hardware, ergonomics, and signal architecture to integrate naturally within the 4U ecosystem.
Designed and crafted in Italy for musicians and performers who consider uniqueness an essential part of their sound.
Built to empower deep creative experimentation and sonic research in the studio, while delivering reliable, versatile, pristine audio performance on stage.
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Creative Effects & Quadraphonic Processing

The Don is built for the sonic explorer who views the 4U format as the ultimate canvas for experimentation.
Experiment as a mindset
4 channel mixing and effects, immersive spatialization, and total control over your sound and signal flow.
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Each channel features its own mixing, creative effects, compression with sidechain, filtering, saturation, reverb, and multiple delays with independent parameters and dedicated filters, enabling layered textures and complex polyrhythms.
Spatialize as a creative tool
Beyond creative effects and mixing tools, The Don introduces an experimental quadraphonic approach. Users can spatialize their mix with adjustable spatialization controls (also via CVs), creating dynamic and engaging movements that wrap around the audience.
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Dedicated controls for immersive movement, allowing the spatial image itself to become a performative element.

Delay - Stereo Offset - Reverb - Saturator
Compressor - Double Pulse Delay with dedicated filters
HP/LP FilterEQ Shaping - Gain Staging
INDEPENDENT EFFECTS PER CHANNEL:


Performance Oriented Interface

For a Buchla performer, staying in the creative flow means having just the right number of controls, laid out so that every gesture feels natural and immediate.
One-Knob-Per-Function Design
A studio-to-stage perspective shaped The Don's interface, delivering true "one-knob-per-function" control for immediate, tactile access to every parameter. No menus, no sub-pages—just direct manipulation of delays, filters, saturations, and offsets across all four channels, optimized for banana jack workflows and live improvisation.
Intuitive Visual Feedback
All visual cues on The Don OLED display provides instant visual feedback for every parameter, ensuring precision and ease of use in studio sessions and live performances. Beneath its approachable simplicity lies immense complexity, yet you'll feel the thoughtful design the moment you patch in: effortless, rewarding, and deeply musical.​

Seamless integration with 4U ecosystem

The Don is designed to be the central nervous system of a Buchla-format modular setup. By integrating native banana-jack connectivity and full compatibility with 4U control voltages and signals, it bridges the gap between classic West Coast synthesis and modern, high-fidelity digital processing. It transforms the concept of a “mixer,” “effects processor,” or “spatializer” into an active compositional dimension.

The Don maintains a sleek 4U footprint, ensuring seamless integration
into Buchla systems
This precise sizing allows The Don to mount effortlessly in standard Buchla systems like 200e, with banana jacks aligning perfectly for native audio and signals patching workflows.
The Don balances dense functionality with true portability, ideal for live sets, studio desks, or evolving West Coast setups without added bulk.
Exquisite Italian Craftsmanship

The Don is crafted with the attention to detail typical of a Made in Italy product, using high-quality potentiometers, aluminum knobs, durable finishes and an unique elegant design.

Premium feel for performers
Custom aluminum knobs have been designed specifically to achieve the right size, finish, grip, and visual balance, while discreetly hiding potentiometer nuts for a cleaner aesthetic. High‑quality potentiometers, metal hardware, and durable finishes replace plastic compromises, ensuring a premium instrument that can withstand years of patching, transport, and stage use.
ALL FUNCTIONS
Complex mixing functions:
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4 Channel Audio In
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4 Channel Audio Out
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Compressor
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Side Chain
- EQ
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Pan
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Stereo Width
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Gain
Native Buchla Connectivity:
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4 Audio Mono In
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4 Audio Mono Out (Quadraphonic Out or 2 Stereo Pairs)
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4 CVs Input
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2 CVs Outputs
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2 Gate Input / Clock Input
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1 Gate Output / Clock Output
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Midi In/Out
Expressive effect section: ​
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4 Independent Delay
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4 Infinite Looper Feedback
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4 Stereo Offset
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4 Double Pulse Delay
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13 HP/LP Filters
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4 Saturators
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Stereo Reverb Engine With Dedicated Hp Filter
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2 Multi Assignable LFOs
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4 Independent Trigger Buttons
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3 Independent Triggering Modes For Creative Routing Possibilities
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Quadraphonic Fx Spatializer
Design:
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4U System Compatibility
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OLED Display
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Aluminium Panel
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Aluminium Tailor Made Knobs
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Italian Attention to Details

All images shown are for illustration purposes only.




