DOODOV
RACK EXTENSIONS · ONLINE

Generative tools for Reason. Built for the curious.

Doodov makes Rack Extensions that turn Reason into a generative instrument: CV routers, gated random generators, sequence and phrase engines. Hand-crafted, focused devices that do one thing well — and let you steer the variation.

What Doodov is

Doodov is a one-developer studio designing modular tools for Reason. Each device is conceived around a single musical idea — channel switching, weighted randomness, transport-locked phrase generation, live sample capture — and shipped as a focused 1U or larger Rack Extension. The catalog spans the SW4-C Multi-Switch Controller, the GRG and SPG families, the LooLoo family of loopers, the Splitfire family of live samplers, and continues from there.

The brand is small, the devices are deep, and the documentation is honest about how each one fits into a generative rack.

Available now / in development

LooLoo Mini
Shipping
LooLoo Mini front panel

Single-track stereo looper — record a loop, then perform it.

LooLoo Mini is a 2U stereo looper built to be played, not just set. Record a tempo-synced loop, then reshape it as it runs: a movable window onto the recording, a dedicated stutter section, a spring-loaded speed-bend wheel, plus pitch shift, decay and an external FX send/return. Overdub layering and three loop modes cover the classic looping workflow; full CV in and out ties the loop into the rest of your rack.

The first device in the LooLoo family — Doodov's loopers, all built on the same live-record-into-buffer engine.

Format
2U Rack Extension · Creative effect / Looper
Device page
LooLoo Mini →
Family
The LooLoo family →
Buy
Reason Studios shop (handles all sales)
Splitfire Furioso
Shipping
Splitfire Furioso front panel
Splitfire Furioso back panel

Compact aggressive live sampler — slice it, pitch it, stack five in a Combinator.

Splitfire Furioso is a 2U live sampler designed around one idea: accept hard constraints, design for stacking. Three voices, sixteen slices, roughly four seconds of buffer, tape-only playback. Five instances fit in 10 rack units and use less RAM than a single full-sized sampler.

The device plays back captured audio two ways. Slice mode maps one slice per key from a settable root — each note triggers its own slice of the recording. Pitch mode plays the whole sample pitched across the keyboard, with start and end knobs defining the playable region. Slicing is automatic (transient detection) or manual (equal divisions, 1–16), and either can be overridden in real time via the cv_slices CV input.

Twenty CV inputs make every musical parameter externally drivable: speed, envelope, loop length, stutter rate and window, pitch region, slice count and selection, plus gates for record, clear, mute, and stutter engage. Two CV outputs (current slice count, playhead position) make self-syncing patches straightforward. Per-voice direct outputs route each voice to its own mixer channel for parallel processing.

The voice machinery is click-free across every combination of voice mode, play mode, and loop mode. Recording over actively-playing voices is safe — voices continue through an atomic buffer swap protected by a per-voice fade-in. Unforgiving CV abuse produces musically useful chaos rather than digital noise.

Built on the same live-record-into-buffer engine as the LooLoo family, specialized for compact stacking instead of single-track loop performance.

Format
2U Rack Extension · Live sampler
Device page
Splitfire Furioso →
Family
The Splitfire family →
Manuals
Quick Reference · Operation Manual · In-Depth Manual
Buy
Reason Studios shop (handles all sales)
SW4-C
Shipping
SW4-C Multi-Switch Controller front panel

Multi-Switch Controller — 4-way CV router for real-time and generative work.

The SW4-C is a 4-way switch aimed at real-time performance and "Kontrolled generative" music. Three CV inputs route to one of four output sets, sequentially or by weighted-random choice. Front panel and CV-mod control over per-channel weights, repeats, and gate behaviour. Designed to sit at the heart of complex generative setups in Reason.

Also useful as an 8-knob, 8-button mini-controller for any Combinator-driven patch.

Format
1U Rack Extension · Helper / CV Processor
Manual
SW4-C_Manual.pdf
Buy
Reason Studios shop (handles all sales)
GRG-8U
In Deployment
GRG-8U Gated Random Generator front panel
GRG-8U Gated Random Generator back panel

Eight channels of gated random CV — one rack unit.

Eight independent CV channels, each holding its own random value until the next gate arrives. Connect any gate source — a step sequencer, a clock divider, a drum track — and each rising edge generates a new random value on that channel, scaled by the Rnd knob and shifted by the Offset knob.

Two passive 1-to-4 CV splitters on the back panel let you route any signal to four destinations without extra devices. No transport lock, no sequencer to configure — gates in, random CV out.

Format
1U Rack Extension · Helper / CV Processor
Manual
GRG-8U_Manual.pdf
Status
Submitted to Reason Studios for deployment review
Updates
Watch this page or write to rackextensions@doodov.com

In development

Doodov continues to build modular tools for generative work in Reason — CV utilities, gate sequencers, audio devices. Each one is designed around a single musical idea, and each one ships when it's ready, not before. Announcements happen at beta or release, never earlier.

Get in touch

General
contact@doodov.com
Product support
rackextensions@doodov.com