Qu-Bit — Nautilus

Manual PDF

Download the Qu-Bit Nautilus Manual PDF

Qu-Bit Nautilus Eurorack Cheat Sheet

Overview

Stereo, underwater-inspired delay network with 8 addressable delay lines (up to 20s each)
Multi-mode delays: Fade, Doppler, Shimmer, De-Shimmer
Advanced feedback, filtering, distortion, CV/gate outputs

Panel and Controls

Knobs

Knob	Function	CV Input (Range)
Mix	Wet/dry blend	Yes (-5V to +5V)
Resolution	Delay subdivision/multiplier (div/mult clock rate: 512th to 2 bars)	Yes (-5V to +5V)
Feedback	Number of repeats; infinite at max	Yes (-5V to +5V, attenuverter assignable)
Sensors	Number of delay lines active (1–8)	Yes (-5V to +5V)
Dispersal	Spacing between delay lines (for polyrhythms & strums); fine tune at 1 sensor	Yes (-5V to +5V, attenuverter assignable)
Reversal	Controls which delay lines play backwards (per delay line, not just on/off)	Yes (-5V to +5V)
Chroma	Selects internal effect/filter in feedback path	Yes (-5V to +5V)
Depth	Amount of Chroma effect applied	Yes (-5V to +5V)

Buttons

Button	Function
Tap	Sets internal clock rate or enters Tap Secondary Functions (see below)
Freeze	Freezes (loops) current buffer—creates beat repeat/glitch effects
Purge	Clears all delay lines
Delay Mode	Selects delay mode: Fade, Doppler, Shimmer (up), De-Shimmer (down)
Feedback Mode	Selects feedback network: Normal, Ping Pong, Cascade, Adrift

Tap Secondary Functions (Hold Tap)

+ Purge: Resets input level/delay mode/feedback mode to default
+ Dispersal Attenuverter: Adjusts input gain (-12dB to +12dB, indicated by left LEDs)

Inputs & Outputs

Jack	Function/Type	Range / Notes
Left In	Audio Input (left, AC-coupled)	10Vpp
Right In	Audio Input (right, AC-coupled)	10Vpp (norms from left if none plugged in)
Left Out	Audio Output (left)	10Vpp
Right Out	Audio Output (right)	10Vpp
Clock In	Gate Input for clock sync	Threshold: 0.4V; Range: 0.25Hz–1kHz
Freeze In	Gate (mirrors Freeze button)	Threshold: 0.4V
Purge In	Gate (mirrors Purge button)	Threshold: 0.4V
Mix CV	CV control of Mix knob	-5V to +5V
Resolution CV	CV for subdivision/multiplier	-5V to +5V
Feedback CV	CV control of Feedback	-5V to +5V (attenuverter assignable)
Sensors CV	CV for number of delay lines	-5V to +5V
Dispersal CV	CV for delay spacing	-5V to +5V (attenuverter assignable)
Reversal CV	Which delay lines are reversed	-5V to +5V
Chroma CV	Chroma internal FX selection	-5V to +5V
Depth CV	Depth/amount of effect	-5V to +5V
Sonar Out	Algorithmic CV or gate based on delay topology	CV: 0–5V; Gate: +5V (50% duty cycle); type set via software; patchable as mod source or clock pass-through

Chroma Effects

Blue: Oceanic Absorption – 4-pole lowpass filter
Green: White Water – 4-pole highpass filter
Purple: Refraction Interference – Variable bitcrusher/sample rate
Orange: Pulse Amplification – Soft/warm saturation
Cyan: Receptor Malfunction – Wavefolding distortion
Red: SOS – Heavy distortion

Depth knob controls intensity (except bitcrusher is random stepped).

Delay Modes (Button cycles)

Fade (blue): Smooth interpolation of delay time (no pitch artifacts)
Doppler (green): Classic vari-speed pitch effect on time change
Shimmer (orange): Octave-up pitch shift in feedback path (configurable semitones via USB)
De-Shimmer (purple): Octave-down pitch shift (configurable)

Feedback Modes

Mode	Behavior
Normal	Standard stereo matched to input
Ping Pong	Alternates left/right in feedback
Cascade	Delays in serial per channel for extra-long delay
Adrift	Cross-channel serial cascade/collage

Other Features

All CV inputs are -5V to +5V; assignable attenuverters for fine CV mapping
Onboard USB-A for firmware/configuration via Narwhal web app—no drive required to operate, any FAT32 USB sticks supported
Lifetime free repairs (excl. cosmetic/damage abuse)

Links

Full Nautilus Manual PDF
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