GR4600
DRUM MACHINE v1.4.7
BPM 140
STOP
TEMPO140
KEYC MIN
PATTERN1 / 16
MODEBEAT
SYSTEM READY · MASTER WAV
STEP 1 / 16
58%
80
0 ST

MIXER / INSERT FX

Select a track or master bus, then enable insert effects

PERFORMANCE FX

Real-time rhythmic effects for the selected track

55
FX OFF

SAMPLER

No sample loaded

KEY SHIFT C MIN
ROOT KEY KEY --
TEMPO TEMPO --
SHIFT 0 ST
MODE CLASSIC

TEMPLATES

Save a machine setup and recall it later

PATTERN SEQUENCER
RIGHT CLICK: COPY · PASTE · CLEAR · FILL

EXPORT AUDIO

GR4600 PATTERN BUILDER

CHAIN
SELECT A SLOT OR BUILD A CHAIN

GR4600 HELP

Quick Start

PadTrackPatternMaster

Press PLAY or Space to start and stop. Click a track name or pad to select it, then click steps to program the selected sound. Double-click a sequencer sound name to replace that track's sound. Click PAD 1-8 to audition sounds live for a jam session.

Pattern Editing

Right-click StepFill Every 2/4/6/8Copy Track

Use 16, 32, 64, or 128 steps. Right-click an active step square to erase that hit. Right-click an empty step or the sound name on the left for fills and rolls, or right-click the sequencer panel for pattern copy, paste, clear, save, load, and P1/P2 linking.

Keyboard And Right Click

SpacePlay/Stop1-8Trigger Pads

Space starts and stops transport. Number keys 1-8 trigger pads. A/W/S/E/D/F/T/G/Y/H/U/J/K previews the selected sound across pitch. Double-click sequencer sound names to browse a replacement file. Right-click pads or tracks for Mute, Sound Browser, Piano Roll, Browse Sound File, Mixer, Copy, Paste, Undo, and Redo. Undo/Redo keeps the last 100 edits.

Piano Roll And Key Range

Right-click SoundPiano Roll-12/+12 ST

Right-click a sound name and choose OPEN PIANO ROLL, or right-click the sound name to open it immediately. Hover keys to preview. Click a key to set that sound's pitch from -12 to +12 semitones around C3. Semitones are musical half-steps; 12 semitones equals one octave.

Advanced Pattern Commands

Right-click StepFillCopy/PasteClear

Right-click a sound name on the left to open Mute, Sound Browser, Piano Roll, Browse Sound File, Mixer, Add Every 1, 2, 4, 6, or 8, Copy, Paste, Clear, Undo, and Redo. Right-click an active step square to erase it. Right-click an empty step to use the same fill commands from that step position.

128 Step View

128ZoomScrollFollow

Use 16, 32, and 64 in fit-to-panel mode for fast programming without zoom. Use 128 for long rolls and full phrases. At 128, the ZOOM slider changes step width, and the orange scrollbar moves across the hidden portion of the sequence. During playback the view follows the active step.

Sample Tune And Time Stretch

Load SampleTuneTime Stretch

KEY SHIFT changes sample pitch. With TIME STRETCH on, the sampler preserves timing while changing pitch. With it off, playback behaves like classic hardware: pitch and speed move together. CUT SELF stops previous chops and also cuts them at pattern wrap; turn it off when you want chops to bleed.

Mixer Inserts

TrackEQChorus/ReverbLimiter

Select MASTER or a track in MIXER / INSERT FX. Enable EQ, Chorus, Reverb, Phaser, or Limiter, then use LOW EQ, HIGH EQ, WET, and DRIVE to shape the sound. In the sound browser, the channel EQ has a parametric graph with colored bands: drag points to change frequency and gain, or use the detailed frequency/Q sliders below it.

Sound Kits

HoverAuditionClickAssign

Use SOUND KITS to browse built-in drums. Hover a sound to audition it. Click a sound to assign it to the currently selected track without leaving the beat-making flow.

Quick Commands

READYRight-clickCollapseLED

Right-click READY labels to collapse them into small status LEDs, then right-click again to restore the label. Right-click empty hardware areas to open the menu for the selected track. Use SAVE TEMPLATE to store the beat, pattern, mixer parameters, sample settings, and current machine state.

Project Files

SAVE.GR4600LOADUNDO 100

SAVE downloads a GR4600 project file containing the full machine state, custom sounds, sample data, patterns, mixer settings, and up to 100 undo/redo history steps. LOAD opens that file so you can come back later and keep working.

Export

MasterWAV/MP3StemsFX Print

EXPORT bounces a master WAV or MP3. Turn on STEMS to create a ZIP with only tracks used in the beat. PRINT INSERT FX TO STEMS includes the active EQ, chorus, reverb, phaser, and limiter on the individual stems.

Troubleshooting

No Sound?Click PagePress PlayCheck Assets

If sound does not play, click the page once, press PLAY, and check browser audio permission. If a sample drifts, turn TIME STRETCH on. If GitHub preview is silent, make sure the assets folder uploaded with the HTML.

About

GR4600 is a Glitchrealm drum machine focused on fast pad loading, step sequencing, sampler playback, and browser export.

Created by Jermaine Woods of Glitchrealm.