Every control on the unit, explained in plain English.
Front panel
Knobs
Preset Selector
This is your main 'browse the sounds' dial. Turn it to move between effects; an amber light shows which effect is active and a moving cursor shows which of the four variations you're on. Push it in to make the effect play backwards. Hold it down to start saving a sound.
tip: You can set it (in Global Configuration) to scroll in a loop/circle or as a straight list down the two rows — pick whichever feels more intuitive for finding sounds quickly.
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The primary navigation knob. Rotating it scrolls through the 11 effects (each with 4 variations A–D) and the User preset bank. Pressing down toggles effect playback direction (forward/reverse). Press and hold to copy/save current settings and loops. In configuration menus it makes selections.
FWD/REV (press Preset Selector)
A quick press flips the effect so it plays your sound backwards, which instantly makes things more dreamy and disorienting. Press again to go back to forward.
tip: Reverse is fantastic on the ambient/granular presets (Haze, Tunnel) for swells that seem to bloom out of nowhere.
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Pressing down on the Preset Selector reverses effect playback. The four indicator lights animate to show which direction playback is running.
Activity
Think of this as the 'more or less' knob for whatever the effect does. Turn it up for busier, thicker, more complex results; turn it down for something sparser and simpler.
tip: Because it does something different in every preset, sweep it slowly while playing to discover each preset's personality. On some presets (like Seq B and D) turning it fully clockwise unlocks a special extra layer.
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A macro control that sets the density/complexity of the effect. Its exact behavior changes per preset — e.g. number of active loopers in Mosaic, grain density in Haze, filter variations in Seq A, arpeggio steps in Arp.
Repeats
This controls how long the effect keeps going or how often it repeats. Combined with Activity, the two knobs together shape the whole character of each preset. Hold Shift and this same knob sets how deep the pitch wobble is.
tip: Activity gives you 'how much,' Repeats gives you 'how long' — nudge both together rather than maxing one out for the most musical results.
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A macro control that sets how long the effect goes on or how frequently events happen. Works together with Activity. Behavior varies per preset — e.g. drone decay time in Tunnel, how often glitches trigger in Interrupt. Secondary (Shift) function: sets Pitch Modulation depth.
Shape
This shapes how each sound event swells and fades — from sharp plucky attacks to soft slow-rising swells. Hold Shift and this knob sets how fast the pitch wobble moves.
tip: Turn Shape toward slower/softer contours for pad-like, breathing textures; use it plus Shift-rate to dial in anything from gentle chorus to seasick vibrato.
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Applies a contour (envelope) to the volume or filter characteristics of the effect. In Glide presets it also determines the shape of the glide pattern. Secondary (Shift) function: sets Pitch Modulation rate.
Filter
This is your tone/brightness control for the effect. All the way right, it's off and everything sounds full and bright. Turn it left to get darker and more muffled, and all the way left it silences the effect entirely. Hold Shift and turn it to add resonance — a vowel-like emphasis right at the cutoff point.
tip: Great for expression-pedal or knob swells: sweeping Filter down as a loop plays creates a natural fade into darkness. Add a touch of resonance for a more vocal, synthy filter sweep.
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A resonant low-pass filter at the end of the effect chain. Fully clockwise = filter bypassed (fully open). Turning left cuts high frequencies; fully counterclockwise kills all effect sound. Secondary (Shift) function: adjusts filter resonance.
Mix
This decides how much of the raw untouched you versus the processed effect you hear. Center for a mix of both; turn up for more effect. Hold Shift and turn it to set the overall output volume of the effect.
tip: For the Interrupt effect specifically, setting Mix to 100% makes the effect truly cut out (mute) your dry signal during glitches — a dramatic stutter. Use the Shift/master-volume to match effect loudness to your bypassed level.
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Sets the balance between the dry input signal and the wet effect. Fully clockwise is not fully wet by default — it blends. Secondary (Shift) function: adjusts the effect master volume.
Time
This sets the rhythmic feel. In Subdiv mode it picks how fast the pattern divides the beat (from 1/4 up through 8x). In Tempo mode it becomes a manual speed dial you can smoothly slow down or speed up. Hold Shift while the looper is running and this knob changes how fast your loop plays back (and its pitch).
tip: Tap tempo still works even in Tempo mode. For dramatic tape-stop-style effects, hold Shift and slowly turn Time while a loop plays — 1X returns it to normal speed.
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Controls either the effect's time Subdivision or the Global Tempo, depending on the Select button. In SUBDIV mode it sets the musical subdivision. In TEMPO mode it sets overall tempo with smooth acceleration/deceleration (subdivision locked to quarter notes). Secondary (Shift) function during looping: changes looper playback speed from 1/4x up to 4x.
Space
This is your reverb amount — turn it up to bathe everything in space and ambience; all the way right is fully drenched. Hold Shift and turn it to pick which flavor of reverb you get, from a small bright room up to a huge ambient wash.
tip: The reverb mode setting (and filter/mod settings) persists through power cycles. For giant ambient beds, use Large Hall or Ambient mode with Space cranked and Repeats high.
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Mixes in the stereo reverb (and delay). Fully clockwise = 100% wet reverb. Secondary (Shift) function: selects one of 4 reverb modes — (A) Bright Room, (B) Dark Medium, (C) Large Hall, (D) Ambient — via Shift + Space.
Loop Level
This controls how loud your recorded loop plays back against everything else. Hold Shift and turn it to set how gradually loops fade in or out.
tip: Set a longer fade time (via Shift) for smooth, gentle loop entrances and exits instead of abrupt starts and stops.
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Sets the playback volume of the Phrase Looper. Secondary (Shift) function: sets the loop fade time (fade direction — in/out/both — is set in Global Configuration).
Switches & toggles
Pre-FX (Looper config)
This changes where the looper sits. Normally it records the finished effect sound. Switch to Pre-FX and it records your clean playing, then runs it through the effects live — so you can change the effect on a loop after you've recorded it.
tip: Try recording a loop in normal post-FX mode, then re-feeding it through the effects — the two routings give very different results, and the routing is saved with each preset.
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A looper routing configuration option. When selected, the looper is placed in front of the effects (Signal → Looper → Effects → Output) so recorded material gets processed live by the effects. Default is post-FX (effects recorded into the loop). Saved within User Presets.
Looper Only (Looper config)
This makes the pedal behave like a plain, normal looper with the wild effects switched off — though reverb, filter, and pitch mod still work.
tip: Handy when you just need a clean loop to play over, without granular chaos on top.
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A configuration option that mutes the effects section, turning Microcosm into a traditional looper. Pitch Modulation, Reverb, and Filter remain active; Mix blends between.
Burst (Looper config)
This makes looping instant and momentary — hold the footswitch to record, let go and it loops immediately. Great for quick stutters and on-the-fly grabs, but you can't overdub in this mode.
tip: Perfect for glitchy live performance grabs. If you want to keep a Burst loop in a saved preset, turn Burst off after recording it.
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A configuration option for fast one-layer loops: the left footswitch records only while held down, and playback begins immediately on release. Pressing again deletes and re-records. Disables overdub. Burst loops aren't saved in User Presets unless Burst is deselected after recording.
Quantize (Looper config)
This snaps your loop length to the beat so it stays perfectly in time with the effect's rhythm. Ideal for building complex layered patterns that all lock together.
tip: Set your tempo first, then record. You can change the effect's subdivision freely while staying in sync, but changing global tempo will break sync until you switch presets.
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A configuration option that syncs loops to the effect tempo by trimming the loop to the nearest quarter note. Effect tempo must be set before recording. Switching presets resets global tempo to the quantized loop's tempo to re-sync.
Footswitches
Left Footswitch — Tap / Rec-Play-Dub
Normally you tap this in rhythm to set the tempo. When the looper is running, it becomes your record button — tap to record, tap to play, tap to start overdubbing, and hold to wipe just the overdub layer.
tip: During recording, the looper button blinks in the last 5 seconds before you hit the 60-second maximum, warning you the loop is about to close automatically.
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With the looper off: tap tempo (matches tempo to your quarter-note taps). With the looper on: records, plays, and overdubs loops (press to cycle), and hold to undo/erase the overdub layer.
Middle Footswitch — Bypass
Your on/off switch for the whole pedal. Depending on your settings, the effect either stops instantly, fades out naturally (trails), or the pedal gets fully out of your signal's way (true bypass).
tip: Trails mode lets reverb and loop tails ring out after you bypass — but it's not available in true bypass mode.
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Engages or disengages (bypasses) Microcosm. Bypass behavior (buffered, buffered with trails, or true bypass) is set in Global Configuration. Also used to cancel a factory reset animation.
Right Footswitch — Hold / Stop-Erase
Normally this freezes the last bit you played into an endless sustained bed you can play over. When the looper is on, it stops the loop with a press, or erases it completely if you hold it.
tip: Set Hold to 'Momentary' in Global Config if you want the freeze to last only while you're pressing — great for rhythmic in-and-out drone stabs.
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With the looper off: Hold Sampler — freezes a recent piece of your playing into a continuous playback cycle (configurable as Toggle or Momentary). With the looper on: press to stop loop playback, hold to fully erase the loop.
Display & indicators
Indicator Lights (4 center bars)
These four lights are the pedal's little screen. They tell you which variation you've landed on, and their color tells you what the looper is doing or which menu you're in.
tip: Learn the looper colors: red means recording, green means playing back, yellow means overdubbing, and flashing means a warning or an erase/undo action.
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Four LED bars that act as a menu display: they show your cursor position when selecting presets (A–D), animate on selection, and change color to indicate looper states (red=recording, green=playing, yellow=overdubbing) and configuration modes.
SUBDIV / TEMPO indicator lights
These just tell you which of the two jobs the Time knob is doing right now.
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Two small lights showing whether the Time knob is currently controlling subdivision (SUBDIV) or global tempo (TEMPO).
Side panels
Jacks & connectors
MONO/STEREO TRS Input
This is where your instrument or source plugs in. One cable for mono; a stereo TRS cable if you're feeding it a stereo signal (after enabling stereo input in the menu).
tip: The pedal defaults to mono input — remember to switch to stereo input in Global Configuration if you're running a stereo source.
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The audio input jack. Accepts mono (standard instrument cable) or stereo (TRS cable) at instrument or line level. Stereo input must be enabled in Global Configuration.
Output L [Mono]
Your main output. Use just this one if you're going to a single amp or mono setup.
tip: When sending a stereo signal in but you only need mono out, use Output L alone to collapse everything to mono.
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Left output jack. Used alone for mono output (sums to mono, including when the input is stereo). Instrument or line level.
Output R
The second output for stereo rigs — use it alongside Output L to get the full wide stereo effect.
tip: Even a mono input creates a lush stereo image when you use both outputs, thanks to the stereo reverb and effects.
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Right output jack. Used together with Output L for a stereo output image.
EXP IN
Plug in an expression pedal here to control one knob with your foot. When you plug it in while powered on, the lights flash blue — move the knob you want to control and it gets assigned.
tip: To keep an assignment, plug the expression pedal in before powering on and don't touch any controls while the lights flash. Filter and Loop Level make especially expressive foot swells.
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1/4" expression pedal input (Tip 0-3v input, Ring 3v out, Sleeve 0v out; recommended pot >10kOhm). Assignable to Activity, Shape, Filter, Mix, Repeats, Space, or Loop Level.
MIDI IN
Connect this to a MIDI controller, sequencer, or other gear to control the pedal remotely and sync its tempo to your setup.
tip: When an external MIDI Start message arrives, the pedal syncs to that clock and tap tempo is disabled; a Stop message returns it to its internal clock.
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Standard MIDI input. Receives CC messages (controlling every parameter), Program Change (recall any of 44 effect variations or 16 user presets), and MIDI clock (auto-switches to external clock on Start message). Listens on Channel 1 by default.
MIDI OUT/THRU
Passes MIDI on to other devices in your chain and can send out tempo clock to keep everything in time.
tip: Since it echoes incoming messages by default, set other daisy-chained devices to a different MIDI channel to avoid them all responding at once.
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MIDI output that by default echoes (thru) messages received at MIDI IN, and can transmit MIDI clock. Behavior (send clock / transmit thru) is configurable in Global Configuration.
9VDC Power Input
Where power plugs in. Use a proper 9V center-negative supply that can deliver at least 400mA — this pedal is hungry.
tip: Avoid daisy-chaining or cheap switching supplies — they add noise. An isolated 9V supply rated 400mA or more gives the cleanest results.
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Power jack accepting a standard 9V, center-negative, 2.1mm barrel connector, requiring at least 400mA. Isolated supply recommended.
What it is
A granular effects pedal combining granular sampling, delay, and looping with a built-in phrase looper to reinterpret an instrument's signal into ambient textures, rhythms, and drones.
The Hologram Electronics Microcosm is a stereo effects pedal that takes whatever you play and chops it up, rearranges it, stretches it, loops it, and reinterprets it into something new. It's built around granular sampling, delay, and looping techniques. In plain terms: you play a note or chord, and Microcosm can turn it into cascading rhythmic patterns, glacial ambient washes, hypnotic drones, glitchy stutters, or shimmering arpeggios — often in ways that feel alive and generative rather than a straight echo of what you played.
Under the hood there are 11 distinct effects grouped into 4 families (Micro Loop, Granules, Glitch, Multidelay). Each effect has 4 preset variations (A through D), giving you 44 starting-point sounds. On top of the effects you get a lush stereo reverb with four modes, a resonant low-pass filter, and pitch modulation (chorus-to-wobble). There's also a 'Hold' sampler that freezes a slice of your playing into an endless bed you can play over, and a 60-second stereo phrase looper that can even layer loops made from different effects.
Microcosm is aimed at guitarists, synth players, and anyone doing ambient, experimental, or texture-based music — but it works on any instrument or line-level source. You can save 16 of your own presets (including recorded loops), sync it to other musicians with tap tempo, control it with an expression pedal, and drive it over MIDI. This guide covers firmware version 1.1.
First session: get a sound out of it
- 01Plug a 9V center-negative power supply (at least 400mA, isolated is best) into the 9VDC jack on the back. The pedal has no on/off switch — it powers up when you connect power.
- 02Run a cable from your instrument into the MONO/STEREO TRS INPUT jack. Run a cable from OUTPUT L to your amp or interface. (For stereo out, also use OUTPUT R.)
- 03Press the middle footswitch to make sure Microcosm is engaged (not bypassed).
- 04Turn the large Preset Selector knob (top right) to pick an effect. Start with MOSAIC (top-left position) preset A. As you turn, an amber cursor shows where you are; let it settle on a preset and the four center lights will animate.
- 05Set MIX to about halfway (12 o'clock) so you hear both your dry playing and the effect.
- 06Set FILTER fully clockwise (filter off / fully open), SPACE low if you want a drier sound, and both ACTIVITY and REPEATS around the middle.
- 07Play a few notes or a chord and listen. Slowly turn ACTIVITY up to add more complexity, and REPEATS to change how long the effect carries on.
- 08Tap the left footswitch a few times in rhythm to set the tempo — the effect's rhythms will lock to your taps.
- 09Turn SPACE clockwise to add reverb, and experiment with different presets (A–D) within each effect by nudging the Preset Selector. When you find something you love, hold the Preset Selector to save it (see Saving Presets).
How the sound flows
Sound enters through the MONO/STEREO TRS input jack on the back. From there it flows in this order: INPUT → EFFECTS → MODULATION (pitch modulation) → REVERB → FILTER → OUTPUT. So your dry signal first hits the chosen effect (the granular/loop/glitch/delay engine), then gets pitch-modulated, then reverberated, then filtered, before leaving through Output L and/or Output R. The Mix knob sets how much of the wet (processed) sound you hear versus your clean dry signal, so the whole effect chain is blended against your untouched input. The Hold sampler taps into this by continuously feeding a captured slice of your playing back into the effects section, letting the effects keep chewing on it while you play over the top. The Phrase Looper normally sits at the END of the chain (post-FX), so it records the fully-processed Microcosm sound. But you can flip it to Pre-FX in its configuration, which puts the looper BEFORE the effects — meaning it records your clean playing and then runs that recording through the effects live, so you can change the effect on a loop after the fact. On the back panel you also have an EXP IN jack for an expression pedal, and MIDI IN plus MIDI OUT/THRU for external control and clock sync. Bypass can be set to buffered (with or without reverb/loop trails) or true bypass in the global menu.
Questions owners actually ask
How do I save a sound I like, including a loop?+
Hold down the Preset Selector until the indicator lights flash blue — this copies your current settings and any recorded phrase. The cursor will blink; turn to the User bank slot you want (16 slots across Red, Yellow, Green, Blue banks) and hold the Preset Selector again. The lights flash blue while it saves, and longer loops take longer to store. To cancel, just click the Preset Selector. Note: Global Configuration settings are not saved with presets, and Burst-mode loops won't save unless you deselect Burst first.
What's the difference between the Hold Sampler and the Phrase Looper?+
The Hold Sampler (right footswitch when the looper is off) freezes a short recent slice of your playing into a continuous sustained bed that keeps feeding through the effects, so you can play over an evolving drone. The Phrase Looper is a full 60-second stereo looper with recording, overdubbing, and undo, activated by the Phrase Looper button. Important: turning on the Phrase Looper erases anything in the Hold Sampler, and you can't use the Hold Sampler while the looper is active.
Why don't the knob positions match what I hear after loading a preset?+
Saved User Presets remember the exact settings from when you saved them, which usually won't line up with where the physical knobs happen to be sitting. The moment you turn any knob, that one parameter jumps to the knob's actual position. So tweak gently and expect a small jump on whichever knob you touch first.
What do Activity and Repeats actually control?+
They're 'macro' knobs that each control many hidden parameters at once, and their exact job changes for every preset. In general, Activity gives you 'more or less' of what the effect does (density, complexity, number of layers), while Repeats controls how long the effect carries on or how often events happen. For example, in Tunnel, Activity sets how deeply the drone is modulated and Repeats sets how long it takes to decay. Experiment with both together on each preset.
How do I get my effect rhythms in time with the music?+
Tap the left footswitch in quarter notes to set the tempo — Microcosm smoothly matches it. Alternatively, tap the Select button so the Time knob is in TEMPO mode and dial the tempo by hand (which also lets you smoothly speed up or slow down). Use the Time knob in SUBDIV mode to choose how the rhythm divides the beat. For loops that stay locked to the effect, turn on the looper's Quantize mode. You can also sync everything to external MIDI clock via MIDI IN.
What are the three bypass options and which should I use?+
In Global Configuration (Space knob menu) you choose: Buffered Bypass (effect stops instantly when off, dry tone stays buffered and consistent), Buffered Bypass with Trails (reverb and loop tails fade out naturally after you switch off), or True Bypass (the pedal fully removes itself from your signal path via relays). Use Trails if you love ambient tails ringing out; use True Bypass if you want the purest possible unaffected signal when off. Note Trails isn't available in True Bypass mode.
How do I reset the pedal?+
There are two options. To reset only the global settings back to factory defaults (keeping your loops and presets), hold both the Phrase Looper button and the Reverse button for 3 seconds — the lights flash yellow. For a complete factory reset that wipes all User presets, erases all loops, and resets global settings, enter it by holding Shift, Phrase Looper, and Reverse for 2 seconds; the lights animate red, then press the Preset Selector to confirm (don't unplug). Cancel by tapping the middle footswitch during the red animation. Power cycle afterward.
Can I record my clean playing to a loop and then change the effect afterward?+
Yes — switch the looper's routing to Pre-FX (in Looper Configuration, accessed by holding the Phrase Looper button). Normally the looper sits after the effects and records the processed sound, but Pre-FX puts the looper before the effects so it captures your dry playing and runs it through whatever effect you choose live. That means you can record a clean loop and then audition different effects on it. The routing choice is saved within each User Preset.
The official manual, for when you want the source.
Open in new tab ↗Ask anything about the Hologram Electronics Microcosm — “how do I sync it to my DAW?”, “why is there no sound?”, “what does the weird button combo do?” — and the AI answers from the official manual.