Sixteen lit buttons, a field of sliders for level, tune and decay, and a bass drum that swaps its own tone for the conga's.
Modulr Steps is a design study after the TR-808 of 1980. It borrows the instrument’s grammar: a black case with an orange trim and wooden ends, sixteen instrument buttons under their own lamps, sliders on one grid of level, tune and decay, and a bass drum that swaps its own tone for the low conga.
Each study is drawn twice: as a standalone plug-in editor, and as a Eurorack module with its macro knobs and the control jacks under them. Nothing here is built.
Mock UI — drawn by the specification’s own kit, not a screenshot of a shipped editor. Values are illustrative, not measured. The study is TR-808’s grammar, redrawn in Modulr’s own words, and nothing on it is measured against the instrument.
The instrument’s own grammar, as the catalogue recalls it: the sections, the controls and the look the study borrows.
The rhythm-composer grammar: a black panel with orange trim, a row of square rubber keys under their own lamps bracketed into families, and every sound described by small sliders with orange caps hung on one global grid of three rows — level, tune and decay — with holes where a voice has fewer.
A black metal 3U panel with an orange trim line: the title, a pattern window and a miniature row of sixteen voices with their lamps, eight knobs with orange caps in two rows, each over its own control jack, and the jacks in a dark tray.
The macros are the signature controls a player reaches for, not a generic set; each one has a control jack under it on the module.
| Macro | Key | Range | Default |
|---|---|---|---|
| Tempo | seq.tempo | 40–240 BPM | 120 BPM |
| Volume | out.vol | -inf – +6 dB | 0.0 dB |
| Level | voice.level | 0–100% | 100% |
| Tune | voice.tune | ±100 ct | 0 ct |
| Decay | voice.decay | 10 ms – 2 s | 500 ms |
| Snap | voice.snap | 5 ms – 400 ms | 150 ms |
| Bass | bass.tone | Bass drum – Low conga | Bass drum |
| Hat | hat.decay | 20 ms – 1 s | 120 ms |
| Side | Jacks |
|---|---|
| In | Note (MIDI), V/Oct (CV), Gate (CV), Clock (CV) |
| Out | Out (Audio), Trig (CV) |
Legendary is the catalogue of the Modulr Synths project: 43 design studies drawn with the specification’s own kit, 33 after the synthesizers of all time and 10 after the drum machines. The makers and years named here are the instrument’s; the names, the layouts and every value are Modulr’s own.