intellijel/sealegs
Sealegs
Stereo character delay with reverb that models three delay circuit types (tape, bucket brigade, and digital), featuring per-model color controls, built-in modulation with multiple waveshapes, low/high-pass filters in the feedback loop, and a configurable signal flow.1030
Capabilities 4
- LFOlfo
- Built-in modulator with 7 morphing waveshapes plus Wow & Flutter and envelope follower; available internally for delay time modulation and externally via MOD OUT jack.1030
- Reverbreverb
- Built-in lush reverb (fog) with three insert positions in the signal chain and variable decay time.1030
- Stereo Delaystereo-delay
- Models three delay circuit types (tape, BBD, digital) with per-model color controls, stereo routing configurations, and feedback loop filtering.1030
- Tape Emulationtape-emulation
- TAPE mode is one of three explicit delay models (TAPE/BBD/DIGI). COLOR adds tape drag, degradation, and dropouts in TAPE mode.1030
Jacks 16 (13 in / 3 out)
| Name | Signal | Voltage | Description |
|---|---|---|---|
| Inputs (13) | |||
| AUX CV IN | cv | — | Assignable CV input with dedicated attenuverter; destination is selected via ALT + AUX DEST button.1030 Assignable destinations mirrors TAP TEMPO / AUX DEST DRIVEModulates DRIVE at a depth set by the AUX CV attenuverter. Mirrors the AUX DEST selection (Magenta).1030 NOISEModulates NOISE at a depth set by the AUX CV attenuverter. Mirrors the AUX DEST selection (Yellow).1030 MOD waveform1030 FOGModulates FOG at a depth set by the AUX CV attenuverter. Mirrors the AUX DEST selection (Green).1030 MIXModulates MIX at a depth set by the AUX CV attenuverter. Mirrors the AUX DEST selection (Blue).1030 MODVaries the MOD waveforms at a depth set by the AUX CV attenuverter. Mirrors the AUX DEST selection (White).1030 |
| CLK IN | clock | — | Clock input for syncing delay time and/or mod rate when DELAY SYNC or MOD SYNC is enabled.1030 |
| COLOR CV IN | cv | — | CV input for modulating the color amount; positive voltages increase and negative voltages decrease the value set by the COLOR slider.1030 |
| FB CV IN | cv | — | CV input for modulating feedback amount; positive voltages increase and negative voltages decrease the feedback set by the FB slider.1030 |
| FREEZE IN | gate | — | High gate enables the freeze function; low gate disables it.1030 |
| HIGHPASS FREQ CV IN | cv | — | CV input for modulating highpass filter cutoff frequency; positive voltages increase and negative voltages decrease the frequency set by the HIGHPASS FREQ slider.1030 |
| IN L | audio | — | Left channel audio input; also used as the mono input when processing a mono signal (IN R is then left unpatched).1030 |
| IN R | audio | — | Right channel audio input; normalled to IN L when unpatched.1030 |
| LOWPASS FREQ CV IN | cv | — | CV input for modulating lowpass filter cutoff frequency; positive voltages increase and negative voltages decrease the frequency set by the LOWPASS FREQ slider.1030 |
| MOD DEPTH CV IN | cv | — | CV input for modulating the mod depth; positive voltages increase and negative voltages decrease the depth set by the MOD DEPTH slider.1030 |
| MOD RATE CV IN | cv | — | CV input for modulating the mod rate; positive voltages increase and negative voltages decrease the rate set by the MOD RATE slider.1030 |
| TIME/L CV IN | cv | — | CV input for modulating delay time; positive voltages increase and negative voltages decrease the time set by the TIME/L slider.1030 |
| WIDTH/R CV IN | cv | — | CV input for modulating delay width; positive voltages increase and negative voltages decrease the width set by the WIDTH/R slider.1030 |
| Outputs (3) | |||
| MOD OUT | cv | -10V to 10V | CV output of the mod wave at full amplitude (not affected by MOD DEPTH slider); can modulate external modules or Sealegs parameters via self-patching.1030 |
| OUT L | audio | — | 1030 |
| OUT R | audio | — | 1030 |
Parameters 30
| Name | Type | Range | Behavior |
|---|---|---|---|
| AUX CV attenuverter | knob | — | Attenuverter for AUX CV IN; fully CW passes full CV range; at noon CV is fully attenuated; CCW from noon inverts the incoming CV with increasing level.1030 |
| COLOR | fader | — | Adds model-specific sonic artifacts: in TAPE mode adds drag/degradation/dropouts; in BBD mode adds companded noise and clock instability; in DIGI mode adds bit-crushing and sample rate reduction.1030 |
| COLOR CV attenuverter | knob | — | Attenuverter for COLOR CV IN; fully CW passes full CV range; at noon CV is fully attenuated; CCW from noon inverts the incoming CV with increasing level.1030 |
| DELAY SYNC / FB CROSS | button | — | Toggles delay time sync on/off (lit orange when active); ALT function toggles crossed feedback on/off (lit blue when ALT held and crossed feedback enabled). Long-press clears the delay buffer.1030 |
| DRIVE | knob | — | Combination input level and overdrive control; at fully CCW the input is fully attenuated; at noon the input is at unity gain; clockwise from noon adds gain or overdrive. ALT function operates as input trim (half at CCW, 2.5x at CW, 1x at noon).1030 |
| FB | fader | ≤160% | Sets the feedback amount (delayed signal fed back into the input); goes up to 160% enabling runaway feedback; short times produce flange/chorus effects, longer times produce discrete echoes or loops.1030 |
| FB CV attenuverter | knob | — | Attenuverter for FB CV IN; fully CW passes full CV range; at noon CV is fully attenuated; CCW from noon inverts the incoming CV with increasing level.1030 |
| FOG | knob | — | Controls the level of the built-in reverb; ALT function varies the fog decay time.1030 |
| FOG/DRIVE POSITION | switch | — | Three-position switch; standard function selects fog insertion point (IN/DLY/MIX in signal chain); ALT function selects drive insertion point at the same three positions.1030 |
| FREEZE / ALT | button | — | Tap to toggle delay freeze (lit cyan when frozen — buffer loops continuously); hold to function as ALT modifier for secondary parameters.1030 |
| HIGHPASS FREQ | fader | — | Sets the highpass filter cutoff frequency inside the feedback loop; higher slider position removes more low frequencies; 6dB/oct slope.1030 |
| HIGHPASS FREQ CV attenuverter | knob | — | Attenuverter for HIGHPASS FREQ CV IN; fully CW passes full CV range; at noon CV is fully attenuated; CCW from noon inverts the incoming CV with increasing level.1030 |
| LOWPASS FREQ | fader | — | Sets the lowpass filter cutoff frequency inside the feedback loop; lower slider position removes more high frequencies; 6dB/oct slope.1030 |
| LOWPASS FREQ CV attenuverter | knob | — | Attenuverter for LOWPASS FREQ CV IN; fully CW passes full CV range; at noon CV is fully attenuated; CCW from noon inverts the incoming CV with increasing level.1030 |
| MIX | knob | — | Sets the wet/dry mix; fully CCW outputs only dry signal; fully CW outputs only wet signal; intermediate positions blend both.1030 |
| MOD | knob | — | Selects the mod waveform from CCW to CW: WOW & FLUTTER, EF-, EF+, LFV 1, SAMPLE & HOLD, SQUARE, SINE, SAW, RAMP; adjacent non-discrete waveforms morph into each other; ALT function jumps directly to named waveforms without morphing.1030 |
| MOD DEPTH | fader | — | Controls how much the selected mod waveform modulates the internal delay time; does not affect the amplitude of the MOD OUT jack signal.1030 |
| MOD DEPTH CV attenuverter | knob | — | Attenuverter for MOD DEPTH CV IN; fully CW passes full CV range; at noon CV is fully attenuated; CCW from noon inverts the incoming CV with increasing level.1030 |
| MOD RATE | fader | 0.1Hz – 40Hz | Sets the oscillation/vacillation rate for LFO waveshapes, envelope follower response rate, or wow-to-flutter crossfade; can be synced to clock or tap tempo.1030 |
| MOD RATE CV attenuverter | menu_setting | — | 1030 |
| MOD SYNC / MOD PHASE | button | — | Toggles mod rate sync on/off (lit orange when active); ALT function toggles phase inversion of the internal mod wave for the right channel.1030 |
| MODEL | switch | — | Three-position switch selecting the delay circuit model: TAPE, BBD, or DIGI.1030 |
| NOISE | knob | — | Controls the amount of noise injected into the signal path. ALT function selects noise mode: fully CCW is pre-delay hiss; turning CW introduces crackle (reaching full crackle at noon); past noon, post-delay hiss is introduced.1030 |
| STEREO CONFIG | switch | — | Three-position switch selecting stereo routing: PONG (series, summed mono), T:W (parallel with width offset), or L/R (parallel with independent left/right times).1030 |
| TAP TEMPO / AUX DEST | button | — | Tap repeatedly to set tempo for delay time and mod rate when sync is enabled; ALT function cycles through five destination options for the AUX CV IN jack.1030 |
| TIME CV attenuverter | knob | — | Attenuverter for TIME CV IN; fully CW passes full CV range; at noon CV is fully attenuated; CCW from noon inverts the incoming CV with increasing level.1030 |
| TIME RANGE | switch | — | Three-position switch (LONG/MED/SHORT) governing delay time range when free-running (200ms–6s, 50ms–1.5s, or 3.125ms–93.75ms) or selecting note division ranges when synced.1030 |
| TIME/L | fader | — | Sets the left-channel (or primary) delay time; range depends on TIME RANGE switch; can be synced to clock or tap tempo. In PONG and T:W stereo configs, sets the primary delay time; in L/R config, sets left channel time directly.1030 |
| WIDTH CV attenuverter | knob | — | Attenuverter for WIDTH CV IN; fully CW passes full CV range; at noon CV is fully attenuated; CCW from noon inverts the incoming CV with increasing level.1030 |
| WIDTH/R | fader | — | In PONG and T:W modes, adds a 0–33% time offset to the primary delay time; in L/R mode, sets the right-channel delay time directly.1030 |
Firmware history 4 versions
| Version | Released | Notes |
|---|---|---|
| 1.3 | 2025-11-24 | Hiss is now stereo and less dense; crackle is less dense. Drive stage is brighter sounding by default. Original darker drive available by holding MOD SYNC on boot.1030 |
| 1.2 | 2024-05-13 | Gain staging updates: reduced attenuation for better-balanced MIX control and louder output; adjusted Drive processor gain in all 3 positions; raised output limiter threshold; wider detent for 1x input trim. Added Send/Return Mode (hold DELAY SYNC on boot) where dry signal is not passed through and MIX controls wet level only.1030 |
| 1.1 | 2023-11-22 | Added DRIVE position switch allowing the drive circuit to be moved to IN, DLY, or MIX positions in the signal chain (held ALT + FOG/DRIVE POSITION switch); setting saved across boots. Freeze is now clickless on all modes.1030 |
| 1.0 | 2023-08 | Initial release.1030 |
References 2
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[1031]
Intellijel Sealegs product pageproduct_page● verified 2026-05-29