This page is read from MIDI Instrument Definitions, a Python library used in the author's other projects, in which every number is traced to a document its maker published. Its source is on GitHub.

Elektron Digitone MIDI implementation

The MIDI implementation of the Elektron Digitone: what it answers to, and the 122 controls it offers, on firmware 1.43.

At a glance

Firmware: This page describes firmware 1.43.
MIDI channel: Any one of 1 to 16.
Parts: Synth Track, 4 of them: each on a MIDI channel of its own, taking notes and controls.
MIDI Track, 4 of them: each on a MIDI channel of its own, taking controls.
FX and Master: on a MIDI channel of its own, taking controls.
Voices: 8, shared by the parts that play notes.
Note range: 0 to 127: C-1 to G9, counting middle C as C4.
Velocity: Sent and received.
Aftertouch: Answered, of a kind its documents do not say. It sends aftertouch too.
Pitch bend: How far it bends is not recorded, and the range can be changed.
Program change: Received and sent, with 128 presets.
MIDI clock: Sent and received.
Start and stop: Sent and received.
Control change: 117 controls, in the tables below, 40 of them with a fine half on a second controller number.
NRPN: Supported. 110 of the controls below have one.
System exclusive: Supported.

Controls

In the order the definition gives them, by part and group. Under each control is the name a program calls it by, once pymidiinstrumentdefs.load("elektron/digitone") has loaded them.

Synth track

Performance

Control	CC	NRPN	Values
Mod Wheel `mod_wheel`	1		0-127
Breath Controller `breath`	2		0-127

Track

Control	CC	NRPN	Values
Mute `track_mute`	94	229 MSB 1, LSB 101	0-127
Track level `track_level`	95	228 MSB 1, LSB 100	0-127

Trig

Control	CC	NRPN	Values
Root `trig_root`	3	384 MSB 3, LSB 0	0-127
Velocity `trig_velocity`	4	385 MSB 3, LSB 1	0-127
Length `trig_length`	5	386 MSB 3, LSB 2	0-127
Filter Trig `trig_filter_trig`	13	389 MSB 3, LSB 5	0-127
LFO Trig `trig_lfo_trig`	14	390 MSB 3, LSB 6	0-127
Portamento Time `trig_portamento_time`	15	391 MSB 3, LSB 7	0-127
Portamento On `trig_portamento_on`	16	392 MSB 3, LSB 8	0-127

SYN1

Control	CC	NRPN	Values
Algorithm `syn1_algorithm`	90	200 MSB 1, LSB 72	0-127
Ratio C `syn1_ratio_c`	91	201 MSB 1, LSB 73	0-127
Ratio A `syn1_ratio_a`	92	202 MSB 1, LSB 74	0-127
Ratio B `syn1_ratio_b`	16 fine 48	203 MSB 1, LSB 75	0-127
Harmonics `syn1_harmonics`	17 fine 49	204 MSB 1, LSB 76	0-127
Detune `syn1_detune`	18 fine 50	205 MSB 1, LSB 77	0-127
Feedback `syn1_feedback`	19 fine 51	206 MSB 1, LSB 78	0-127
Mix `syn1_mix`	20 fine 52	207 MSB 1, LSB 79	0-127
Ratio C Offset `syn1_ratio_c_offset`		223 MSB 1, LSB 95	0-127
Ratio A Offset `syn1_ratio_a_offset`		224 MSB 1, LSB 96	0-127
Ratio B1 Offset `syn1_ratio_b1_offset`		225 MSB 1, LSB 97	0-127
Ratio B2 Offset `syn1_ratio_b2_offset`		226 MSB 1, LSB 98	0-127

SYN2

Control	CC	NRPN	Values
A Env Attack `syn2_a_env_attack`	75	208 MSB 1, LSB 80	0-127
A Env Decay `syn2_a_env_decay`	76	209 MSB 1, LSB 81	0-127
A Env End `syn2_a_env_end`	77	210 MSB 1, LSB 82	0-127
A Level `syn2_a_level`	78	211 MSB 1, LSB 83	0-127
B Env Attack `syn2_b_env_attack`	79	212 MSB 1, LSB 84	0-127
B Env Decay `syn2_b_env_decay`	80	213 MSB 1, LSB 85	0-127
B Env End `syn2_b_env_end`	81	214 MSB 1, LSB 86	0-127
B Level `syn2_b_level`	82	215 MSB 1, LSB 87	0-127
A Delay `syn2_a_delay`	83	216 MSB 1, LSB 88	0-127
A Trig `syn2_a_trig`	84	217 MSB 1, LSB 89	0-127
A Env Reset `syn2_a_env_reset`	85	218 MSB 1, LSB 90	0-127
B Delay `syn2_b_delay`	86	219 MSB 1, LSB 91	0-127
B Trig `syn2_b_trig`	87	220 MSB 1, LSB 92	0-127
B Env Reset `syn2_b_env_reset`	88	221 MSB 1, LSB 93	0-127
Phase Reset `syn2_phase_reset`	89	222 MSB 1, LSB 94	0-127

Filter

Control	CC	NRPN	Values
Filter Frequency `filter_frequency`	23 fine 55	148 MSB 1, LSB 20	0-127
Resonance `filter_resonance`	24 fine 56	149 MSB 1, LSB 21	0-127
Filter Type `filter_type`	74	150 MSB 1, LSB 22	0-127
Attack Time `filter_attack_time`	70	144 MSB 1, LSB 16	0-127
Decay Time `filter_decay_time`	71	145 MSB 1, LSB 17	0-127
Sustain Level `filter_sustain_level`	72	146 MSB 1, LSB 18	0-127
Release Time `filter_release_time`	73	147 MSB 1, LSB 19	0-127
Env. Depth `filter_env_depth`	25 fine 57	151 MSB 1, LSB 23	0-127
Env. Delay `filter_env_delay`	43	194 MSB 1, LSB 66	0-127
Base `filter_base`	26 fine 58	152 MSB 1, LSB 24	0-127
Width `filter_width`	27 fine 59	153 MSB 1, LSB 25	0-127

Amp

Control	CC	NRPN	Values
Attack Time `amp_attack_time`	104	160 MSB 1, LSB 32	0-127
Decay Time `amp_decay_time`	105	161 MSB 1, LSB 33	0-127
Sustain Level `amp_sustain_level`	106	162 MSB 1, LSB 34	0-127
Release Time `amp_release_time`	107	163 MSB 1, LSB 35	0-127
Drive `amp_drive`	9 fine 41	164 MSB 1, LSB 36	0-127
Pan `amp_pan`	10 fine 42	165 MSB 1, LSB 37	0-127
Volume `amp_volume`	7 fine 39	166 MSB 1, LSB 38	0-127
Chorus Send `amp_chorus_send`	12 fine 44	169 MSB 1, LSB 41	0-127
Delay Send `amp_delay_send`	13 fine 45	168 MSB 1, LSB 40	0-127
Reverb Send `amp_reverb_send`	14 fine 46	167 MSB 1, LSB 39	0-127
Amp Env Reset `amp_env_reset`	102	170 MSB 1, LSB 42	0-127

LFO

Control	CC	NRPN	Values
Speed LFO1 `lfo1_speed`	28 fine 60	176 MSB 1, LSB 48	0-127
Multiplier LFO1 `lfo1_multiplier`	108	177 MSB 1, LSB 49	0-127
Fade In/Out LFO1 `lfo1_fade_in_out`	109	178 MSB 1, LSB 50	0-127
Destination LFO1 `lfo1_destination`	110	179 MSB 1, LSB 51	0-127
Waveform LFO1 `lfo1_waveform`	111	180 MSB 1, LSB 52	0-127
Start Phase LFO1 `lfo1_start_phase`	112	181 MSB 1, LSB 53	0-127
Trig Mode LFO1 `lfo1_trig_mode`	113	182 MSB 1, LSB 54	0-127
Depth LFO1 `lfo1_depth`	29 fine 61	183 MSB 1, LSB 55	0-127
Speed LFO2 `lfo2_speed`	30 fine 62	185 MSB 1, LSB 57	0-127
Multiplier LFO2 `lfo2_multiplier`	114	186 MSB 1, LSB 58	0-127
Fade In/Out LFO2 `lfo2_fade_in_out`	115	187 MSB 1, LSB 59	0-127
Destination LFO2 `lfo2_destination`	116	188 MSB 1, LSB 60	0-127
Waveform LFO2 `lfo2_waveform`	117	189 MSB 1, LSB 61	0-127
Start Phase LFO2 `lfo2_start_phase`	118	190 MSB 1, LSB 62	0-127
Trig Mode LFO2 `lfo2_trig_mode`	119	191 MSB 1, LSB 63	0-127
Depth LFO2 `lfo2_depth`	31 fine 63	192 MSB 1, LSB 64	0-127

Misc

Control	CC	NRPN	Values
Pattern Mute `pattern_mute`		232 MSB 1, LSB 104	0-127
Sustain `sustain`	64		0-127
Sostenuto `sostenuto`	66		0-127

MIDI track

CC value

Control	CC	Values
CC Val1 `cc_val1`	70	0-127
CC Val2 `cc_val2`	71	0-127
CC Val3 `cc_val3`	72	0-127
CC Val4 `cc_val4`	73	0-127
CC Val5 `cc_val5`	74	0-127
CC Val6 `cc_val6`	75	0-127
CC Val7 `cc_val7`	76	0-127
CC Val8 `cc_val8`	77	0-127

FX and master

Chorus

Control	CC	NRPN	Values
Depth `chorus_depth`	3 fine 35	256 MSB 2, LSB 0	0-127
Speed `chorus_speed`	9 fine 41	257 MSB 2, LSB 1	0-127
High-pass `chorus_high_pass`	70	258 MSB 2, LSB 2	0-127
Width `chorus_width`	71	259 MSB 2, LSB 3	0-127
Delay Send `chorus_delay_send`	12 fine 44	260 MSB 2, LSB 4	0-127
Reverb Send `chorus_reverb_send`	13 fine 45	261 MSB 2, LSB 5	0-127
Mix Volume `chorus_mix_volume`	14	262 MSB 2, LSB 6	0-127

Delay

Control	CC	NRPN	Values
Delay Time `delay_time`	15 fine 47	266 MSB 2, LSB 10	0-127
Pingpong `delay_pingpong`	16 fine 48	267 MSB 2, LSB 11	0-127
Stereo Width `delay_stereo_width`	17 fine 49	268 MSB 2, LSB 12	0-127
Feedback `delay_feedback`	18 fine 50	269 MSB 2, LSB 13	0-127
Highpass Filter `delay_highpass_filter`	72	270 MSB 2, LSB 14	0-127
Lowpass Filter `delay_lowpass_filter`	73	271 MSB 2, LSB 15	0-127
Reverb Send `delay_reverb_send`	19 fine 51	272 MSB 2, LSB 16	0-127
Mix Volume `delay_mix_volume`	20	273 MSB 2, LSB 17	0-127

Reverb

Control	CC	NRPN	Values
Predelay `reverb_predelay`	21 fine 53	276 MSB 2, LSB 20	0-127
Decay Time `reverb_decay_time`	74	277 MSB 2, LSB 21	0-127
Shelving Freq `reverb_shelving_freq`	75	278 MSB 2, LSB 22	0-127
Shelving Gain `reverb_shelving_gain`	22 fine 54	279 MSB 2, LSB 23	0-127
Highpass Filter `reverb_highpass_filter`	76	280 MSB 2, LSB 24	0-127
Lowpass Filter `reverb_lowpass_filter`	77	281 MSB 2, LSB 25	0-127
Mix Volume `reverb_mix_volume`	23	282 MSB 2, LSB 26	0-127

Master

Control	CC	NRPN	Values
Master Overdrive `master_overdrive`	29 fine 61	293 MSB 2, LSB 37	0-127
Dual Mono `master_dual_mono`	83	361 MSB 2, LSB 105	0-127
Input L Volume `master_input_l_volume`	24 fine 56	286 MSB 2, LSB 30	0-127
Input R Volume `master_input_r_volume`	25 fine 57	288 MSB 2, LSB 32	0-127
Pan L `master_pan_l`	78	287 MSB 2, LSB 31	0-127
Pan R `master_pan_r`	79	289 MSB 2, LSB 33	0-127
Chorus Send L `master_chorus_send_l`	26 fine 58	290 MSB 2, LSB 34	0-127
Chorus Send R `master_chorus_send_r`	30 fine 62	358 MSB 2, LSB 102	0-127
Delay Send L `master_delay_send_l`	27 fine 59	291 MSB 2, LSB 35	0-127
Delay Send R `master_delay_send_r`	31 fine 63	359 MSB 2, LSB 103	0-127
Reverb Send L `master_reverb_send_l`	28 fine 60	292 MSB 2, LSB 36	0-127
Reverb Send R `master_reverb_send_r`	82 fine 32	360 MSB 2, LSB 104	0-127
Pattern Volume `master_pattern_volume`	95	294 MSB 2, LSB 38	0-127

Where these facts come from

Source documents

Digitone User Manual, OS version 1.43, dated 9 September 2026, its user manual, read on 13 September 2026 (the file read).
Digitone & Digitone Keys OS Release Notes - Elektron, OS 1.43, dated 9 September 2026, its release notes, read on 1 October 2026 (the file read).

How they were read

User manual for OS 1.43, 106 pages: APPENDIX B: MIDI IMPLEMENTATION at pp. 96-99, whose 124 rows are every control below; the channel architecture at pp. 73-74, where each synth track, each MIDI track and the effects section is given its own channel; eight voice polyphony at pp. 15 and 37, stolen across the whole instrument rather than per track; notes 0-127 at p. 24, with Elektron's own naming putting C0 at note 0; program change selecting patterns 1-128 at p. 24, sent and received separately and each on its own channel (p. 72); velocity, pitch bend, the mod wheel on CC 1 and the breath controller on CC 2 at pp. 30-31, each assignable to up to four parameters; and SysEx for projects, patterns and sounds at pp. 74-75.

Receiving notes and receiving control change can each be switched off entirely (p. 73).

Every number was read twice, by two methods that agreed on all 124 rows.

NOT RECORDED:

values, bands, defaults and units for every control, which the appendix does not give;
which kind of aftertouch is received, since p. 31 names the aftertouch command without saying channel or poly;
what a MIDI track does with notes arriving on its own channel, which p. 74 does not settle;
and which channels the tracks default to, of which only the AUTO channel's 10 is stated.