The TT-303 is a faithful re-creation of the classic bassline synthesizer. It has a distinctive sound often associated with acid house, techno and other dance music genres. Due to its legacy and prominence in the history of electronic music, the 303 is perhaps the ultimate “table top” device. Much like the M8RX and the XOX Drum Deranger, this pattern machine device is programmed as much as it is played.
These controls shape the sound of the TT-303.
Transposes the synth up to 12 semitones (one octave) in either direction.
This controls the tone color by adjusting the cutoff frequency of the filter. Rotate the knob counter-clockwise to remove the upper harmonics and make the tone “softer.”
Also known as Q, this knob emphasizes certain frequencies as it rotates clockwise.
Also known as “envelope modulation,” this controls the tone movement of a note.
Decay adjusts the fade-out time of a note and affects both volume and tone. Turn this knob clockwise to increase the length.
Controls the amount of accent applied to notes. Set which notes have accents in the pattern controls.
This menu provides the controls to manipulate the current pattern.
Shifts all tracks of the pattern one step to the left or right.
Randomize everything in the pattern including notes, accents, pitches, etc.
Tap the Random button above Edit Pattern to use this feature without opening the Edit Pattern menu.
Randomize which notes have accents, while retaining the basic pattern.
Randomize the pitches of the notes, while retaining the basic pattern.
Alter everything in the pattern including notes, accents, pitches, etc.
Alter which notes have accents, while retaining the basic pattern.
Alter the pitches of the notes, while retaining the basic pattern.
Note: Randomize sets new values completely at random, while alter creates more subtle changes and retains some of the aspects of the current pattern.
Transpose the pattern up to 12 semitones (one octave) in either direction. Tap “Apply Transpose” to make the change.
Cuts the current pattern, and copies it to the clipboard.
Copies the current pattern to the clipboard.
Pastes the pattern stored in clipboard to the selected pattern slot.
Clears the current pattern and restores the 303 to its default state.
Sets the timing of the steps to either 1/8th or 1/16th notes. This setting applies to the whole device.
Store eight patterns in banks A, B, C and D. Turn the bank selector knob and tap the number block to select a pattern for playback and/or editing.
This switch changes the synth’s waveform to either triangle (left) or square (right).
Displays the step currently being edited. Use the “Step” button to advance and “Back” to move back one step. When the pattern interval is set to 1/16, the 16 steps in a TT-303 pattern make up one bar (when set to 1/8, they make up 2 bars).
To enable playback for the selected step, tap the note button to the right of the Edit Step screen.
These controls are displayed like a traditional one-octave keyboard. Tap the button with the desired tone to set the pitch for the current step.
Tap the Down or Up buttons to play the step one octave lower and/or higher.
Adds an accent to the step. The amount of accent is determined by the accent knob in the tone controls.
Slides between pitches. Tap to toggle slide on for the current step.
When Pitch Mode is on, the step advances each time you tap a Pitch Key. Use this feature for quickly creating new patterns by playing them on the keyboard.
Clears all the settings for the current pattern.