KnobSnob

Every control on the unit, explained in plain English.

Front panel

Knobs

Individual level knobs

One volume knob per drum — set the balance between kick, snare, hats and so on.

tip: Set these while a pattern loops so you can hear the mix come together in context.

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Each of the nine instruments has its own volume control setting how loud it appears in the mix.

Tune (Bass Drum)

Makes the kick drum higher or lower in pitch — low for a deep boom, high for a tighter thud.

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Sets the bass drum's basic pitch.

Decay (Bass Drum)

Sets how long the kick rings out — short for a tight punch, long for a booming sustained note.

tip: Use the normal button for long decay and the Shift version when you want a short kick regardless of this knob.

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Controls the release length of the sound. Applies when the bass drum is triggered directly; when triggered with Shift the bass drum uses a fixed short decay instead.

Tone (Bass Drum)

Controls the click/punch at the very start of the kick — more for a snappy, aggressive front end, less for a rounder thump.

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Adjusts the intensity of the attack phase of the bass drum.

Noise (Snare Drum)

Controls how much 'hiss/rattle' is in the snare versus the tonal body — more noise gives a crisper, sharper snare.

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Sets the volume of the noise component of the snare sound.

Tone (Snare Drum)

Shifts the snare's character from deep and fat to thin and bright.

tip: The snare shares a circuit with the rimshot (Shift + button), so the two can't sound at the same time.

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Controls the balance between a low and a higher snare sound.

Attack (Clap)

Controls how tight or spread-out the multiple hand-claps sound.

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Sets the width of the individual claps within the clap sound.

Filter (Clap)

A tone knob for the clap — dark and dull at one end, sharp and bright at the other.

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Adjusts the tonal color of the clap, from muffled to crisp.

Decay (Clap)

Lengthens the fading 'wash' after the clap, almost like adding reverb.

tip: Played directly the clap is longer and contains four claps; triggered with Shift it's shorter and contains just two claps.

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Controls the release time of the noise part, adding a reverb-like tail.

Tune (Tom/Conga)

Controls how far apart the low, mid, and high toms/congas are in pitch.

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Sets the spreading of the three available pitches.

Decay (Tom/Conga)

Sets how long the tom or conga hit rings out.

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Controls the sound duration.

Decay (Cowbell)

Sets how long the cowbell rings — short clank or long clang.

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Controls the sound duration of the cowbell.

Tune (Cowbell)

Adjusts the metallic clash of the two pitches inside the cowbell for more or less dissonance.

tip: The cowbell shares a channel with the clave (Shift + button), so only one of the two can play at once.

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Continuously detunes one of the two tone generators that make up the cowbell.

Tone (Cymbal)

Changes the character of the initial strike of the cymbal.

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Manipulates the sound of the cymbal's attack phase.

Decay (Cymbal)

Sets how long the cymbal shimmer lasts before fading out.

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Controls the release length of the cymbal.

Tune (Cymbal)

A shared pitch knob that raises or lowers the cymbal, cowbell, and hi-hats all at once.

tip: Because it affects three instruments, listen to the hats and cowbell too when you adjust it.

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Sets the overall tuning for cymbal, cowbell, and hi-hat together.

Decay (Hi-hat)

Sets how long the open hi-hat sizzles before it closes off.

tip: Note that button 7 is the open hi-hat and button 8 the (closed) hi-hat; Shift on button 8 gives you an open hi-hat variation via MIDI note A#1.

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Controls the sound duration for the open hi-hat.

Tempo

The speed knob for the beat; it also acts as the selector dial in the setup menus.

tip: When setting the MIDI channel (Shift + Fill), this knob picks the channel and the LEDs 1–16 show which one.

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Sets the playback tempo. Also selects the value in setup functions such as MIDI channel selection.

Switches & toggles

Tom/Conga toggle

Chooses whether button 4 plays a tom or a conga; you can't have both at once.

tip: Reach the low, mid, and high pitches by pressing the button (with Rec held) once, twice, or three times when assigning it to a track.

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Switches this instrument between tom and conga voices. Only one can play at a time. The sound source offers three pitches per pattern (low/mid/high).

Buttons

White buttons 1/BD – 8/HH

These are your drum pads — hit one and you hear that drum. They double as the sixteen step buttons when you're building a beat.

tip: Hold Shift while pressing a button to play that instrument's hidden variation (see individual instruments below).

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Eight numbered buttons that manually trigger the eight main instruments: 1/BD bass drum, 2/SD snare, 3 clap, 4 tom/conga, 5 cowbell, 6 cymbal, 7/OH open hi-hat, 8/HH hi-hat. In programming mode they also set and clear steps.

Shift

A 'second function' key. Hold it to reach the hidden versions of sounds, the even-numbered steps when programming, and setup menus.

tip: While programming a track, hold Shift to enter the even steps (2, 4, 6…); release it to go back to the odd steps (1, 3, 5…).

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A modifier button. Held with a white button it triggers the alternate sound sharing that channel (short bass drum, rimshot, short clap, high tom/conga, clave). It also toggles between odd and even steps during programming and unlocks several global functions.

Play

Your transport button — press to run the beat, press again to stop.

tip: Hold Play while powering on to toggle between internal and external MIDI-clock sync (the mode isn't shown, so remember your choice).

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Starts and stops the sequencer.

Fill

Switches on the automatic drum fills so the pattern varies instead of looping the same bar.

tip: Hold Shift + Fill to enter MIDI-channel setup.

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Toggles between playing only the basic one-bar rhythm (left LED lit) and alternating between the basic rhythm and its fill-in (right LED lit).

Rhythm

Your pattern-picker. Hold it and tap a white button for patterns 1–8; hold it and type a two-digit number on the white buttons for higher patterns.

tip: For a two-digit pattern like 36, hold Rhythm and press 3 then 6. Press Rhythm alone to see which pattern is currently selected. Pattern changes take effect only after the current bar finishes.

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Selects which of the 72 rhythm patterns plays. The patterns are grouped in eights (1–8, 11–18, 21–28, etc.).

Rec

The button for building and editing beats and songs.

tip: Hold Rec + Rhythm for at least a second to wipe the current pattern before starting fresh. Hold Rec + Shift to program the accent track.

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Enters record/programming mode for patterns and songs. Held with an instrument button it selects that track for editing; held with Rhythm for one second it erases a pattern.

Song

Handles full arrangements — pick a saved song to play, or use it to step through and confirm patterns while writing one.

tip: Each of the eight songs can hold up to 64 patterns chained together.

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Selects and confirms songs. Pressed with a white button it loads one of eight songs; during song recording it confirms each pattern entry.

Side panels

Switches & toggles

On/Off switch

The power switch.

tip: Hold Play while flipping this on to toggle external MIDI-clock sync mode.

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Powers the unit on and off.

Jacks & connectors

Power jack

Where the wall adapter plugs in.

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Accepts the external power supply.

MIDI-In

Lets a keyboard, pad, or sequencer play and control the 522.

tip: Notes B0–D2 trigger the drums (e.g. B0=short kick, C1=long kick, D1=snare), and every sound is also available two octaves higher, from B2 to D4.

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Receives MIDI notes to trigger instruments and MIDI clock/start/stop for external sync.

Stereo Out

The main output to your mixer, amp, or interface.

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The main line-level analogue output carrying the full mix.

Individual outputs (Bass Drum, Snare, Clap, Hi-hat)

Send the kick, snare, clap, or hats out on their own cable to record or process them separately.

tip: Remember that once you patch an individual output, that drum disappears from the main Stereo Out mix — so route it somewhere or you won't hear it.

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Four separate output jacks for these instruments. Plugging into one automatically removes that instrument from the Stereo Out.