Splitfire Furioso
2U Rack Extension · Live sampler
Splitfire Furioso is a compact aggressive live sampler for Reason, designed around one idea: accept hard constraints, design for stacking. Three voices, sixteen slices, twenty CV inputs, two rack units. Capture audio in one button press, then play it back as a sliced instrument or as a pitched sample across the keyboard.
- Slice it, pitch it, play it across the keyboard
- Twenty CV inputs for controlled mayhem
- Five in a Combinator, lighter than one Rubato
// The device
Front & back
Front panel — sample/stutter zones left, live waveform centre, channel & record cluster below the display, playback & voice parameters right, status display far right.
Back panel — stereo audio I/O and per-voice direct outputs in the top band, twenty CV inputs and two CV outputs in the lower band.
// Overview
A sampler designed to be stacked
Furioso turns short audio captures into an instrument you stack.
Recording is one button press. Three rec modes cover the everyday cases: Hold captures while the button or CV gate is held, Fixed captures a defined length, Quantize starts and stops on transport bar boundaries. The input meter shows incoming level. The waveform display updates live as you record. Up to four seconds of stereo audio per instance.
The captured sample plays back two ways. Slice mode maps one slice per key from a settable root note — 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 slice-count 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 and playhead position — make self-syncing patches straightforward. Per-voice direct outputs route each of the three voices to its own mixer channel for parallel processing.
The voice machinery is click-free across every combination of voice mode (Poly, Mono, Legato, Retrigger), play mode (Slice, Pitch), and loop mode (Off, On). 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.
Five instances fit in 10 rack units and use less RAM than a single full-sized sampler. The Combinator brings them together: decompose a groove into independent rhythmic voices, each with its own slice grid, loop behaviour, CV routing and mute state.
Splitfire Furioso is the compact sibling in the Splitfire family of live samplers from Doodov.
// Detail
What's inside
Recording
- Stereo capture, approximately 4 seconds at the host sample rate
- Three rec modes: Hold (while held), Fixed (defined length), Quantize (transport bars)
- Live waveform display updates as you record
- Four-LED input meter (green / green / yellow / red) for setting level
- Recording over actively-playing voices supported via atomic buffer swap with per-voice fade-in
- One level of undo — restores the previous sample
Playback
- Three voices, polyphonic
- Voice modes: Poly, Mono, Legato, Retrigger
- Play modes: Slice (one slice per key) and Pitch (sample pitched across the keyboard)
- Loop off (one-shot with end-fade) or loop on (equal-power crossfade, capped to keep short loops audible)
- Speed control 0–3× with a centre detent at unity — the 2–3× zone is deliberate aliasing territory
- Reverse playback, per-voice
- Click-free across every combination of voice, play and loop mode
Slicing
- 1 to 16 slices
- Auto mode: transient detection with adjustable sensitivity
- Manual mode: equal divisions, slice count from the panel knob
- CV override: a single CV input forces the slice count in real time, overriding both panel modes
- Slice-select CV addresses individual slices in Mono and Legato modes
- Slice-offset CV chromatically shifts the keyboard-driven slice
Stutter
- Per-voice stutter, captures a window at engage and repeats it
- Window length frozen at engage time (knob and CV applied once)
- Playback rate live — can be modulated continuously while stutter is engaged
- Engaged from the panel button or the back-panel gate input
Voice parameters
- Attack and release envelopes (linear, 0–2 s and 0–4 s)
- Portamento glide between consecutive notes in Mono and Legato modes
- Pan spread across the three voices
- Bit-depth and sample-rate degradation, capped at 4-bit / 6 kHz at maximum — aggressive but musical
- Volume, post-degradation
- Front-panel mute button and CV for live-performance routing
CV & routing
- 20 CV inputs — audio I/O, sequencer pair, four gates, slice/key controls, additive modulation on every musical parameter
- 2 CV outputs — current slice count (1→0.0, 16→1.0) and primary-voice playhead position
- Stereo main outputs — mixed, panned, degraded, volume-scaled
- Per-voice direct outputs (V1 / V2 / V3) — raw, no pan, no degradation
- Full MIDI CC mapping
Format & footprint
- 2U Rack Extension
- Under 5 MB per instance — designed to be stacked
- Five instances in 10 rack units, lighter than one Splitfire Rubato
- Sample rates 44.1 / 48 / 88.2 / 96 kHz
- Reason 13 and later
// Documents & specs
Manuals
Three tiers of documentation, from a two-minute card to the complete technical reference. All PDF.
- Quick reference Furioso_QuickReference.pdf 2 pages — play your first sound in two minutes
- Operation manual Furioso_OperationManual.pdf 6 pages — the readable walk-through
- In-depth manual Furioso_InDepthManual.pdf 20 pages — every control, every CV, every mode, plus a Pro Tips chapter