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 Digitakt MIDI implementation

The MIDI implementation of the Elektron Digitakt: what it answers to, and the 95 controls it offers, on firmware 1.53.

At a glance

Firmware: This page describes firmware 1.53.
MIDI channel: Any one of 1 to 16.
Parts: Audio Track, 8 of them: each on a MIDI channel of its own, taking notes and controls, with 1 voice each.
MIDI Track, 8 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: Each part's own, under Parts.
Note range: 0 to 84: C-1 to C6, counting middle C as C4.
Velocity: Sent and received.
Aftertouch: Sent. Whether it answers to any is not recorded.
Pitch bend: Not recorded.
Program change: Received and sent, with 128 presets.
MIDI clock: Sent and received.
Start and stop: Sent and received.
Control change: 95 controls, in the tables below, 2 of them with a fine half on a second controller number.
NRPN: Supported. 85 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/digitakt") has loaded them.

Audio track

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
Note `trig_note`	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		0-127
LFO Trig `trig_lfo_trig`	14		0-127

Source

Control	CC	NRPN	Values
Tune `source_tune`	16	128 MSB 1, LSB 0	0-127
Play Mode `source_play_mode`	17	129 MSB 1, LSB 1	0-127
Bit Reduction `source_bit_reduction`	18	130 MSB 1, LSB 2	0-127
Sample Select `source_sample_select`	19	131 MSB 1, LSB 3	0-127
Data entry knob E (machine dependent) `source_data_entry_knob_e`	20	132 MSB 1, LSB 4	0-127
Data entry knob F (machine dependent) `source_data_entry_knob_f`	21	133 MSB 1, LSB 5	0-127
Data entry knob G (machine dependent) `source_data_entry_knob_g`	22	134 MSB 1, LSB 6	0-127
Sample Level `source_sample_level`	23	135 MSB 1, LSB 7	0-127

Filter

Control	CC	NRPN	Values
Filter Frequency `filter_frequency`	74	148 MSB 1, LSB 20	0-127
Resonance `filter_resonance`	75	149 MSB 1, LSB 21	0-127
Filter Type `filter_type`	76	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`	77	151 MSB 1, LSB 23	0-127
Env. Delay `filter_env_delay`	86	178 MSB 1, LSB 50	0-127
Sample Rate Reduction `filter_sample_rate_reduction`	87	181 MSB 1, LSB 53	0-127
Base `filter_base`	84	179 MSB 1, LSB 51	0-127
Width `filter_width`	85	180 MSB 1, LSB 52	0-127
SRR Routing `filter_srr_routing`	88	182 MSB 1, LSB 54	0-127

Amp

Control	CC	NRPN	Values
Attack Time `amp_attack_time`	78	152 MSB 1, LSB 24	0-127
Hold Time `amp_hold_time`	79	153 MSB 1, LSB 25	0-127
Decay Time `amp_decay_time`	80	154 MSB 1, LSB 26	0-127
Overdrive `amp_overdrive`	81	155 MSB 1, LSB 27	0-127
Delay Send `amp_delay_send`	82	156 MSB 1, LSB 28	0-127
Reverb Send `amp_reverb_send`	83	157 MSB 1, LSB 29	0-127
Pa n `amp_pa_n`	10	158 MSB 1, LSB 30	0-127
Volume `amp_volume`	7	159 MSB 1, LSB 31	0-127

LFO 1

Control	CC	NRPN	Values
Speed `lfo_1_speed`	102	160 MSB 1, LSB 32	0-127
Multiplier `lfo_1_multiplier`	103	161 MSB 1, LSB 33	0-127
Fade In/Out `lfo_1_fade_in_out`	104	162 MSB 1, LSB 34	0-127
Destination `lfo_1_destination`	105	163 MSB 1, LSB 35	0-127
Waveform `lfo_1_waveform`	106	164 MSB 1, LSB 36	0-127
Start Phase `lfo_1_start_phase`	107	165 MSB 1, LSB 37	0-127
Trig Mode `lfo_1_trig_mode`	108	166 MSB 1, LSB 38	0-127
Depth `lfo_1_depth`	109 fine 61	167 MSB 1, LSB 39	0-16383

LFO 2

Control	CC	NRPN	Values
Speed `lfo_2_speed`	112	168 MSB 1, LSB 40	0-127
Multiplier `lfo_2_multiplier`	113	169 MSB 1, LSB 41	0-127
Fade In/Out `lfo_2_fade_in_out`	114	170 MSB 1, LSB 42	0-127
Destination `lfo_2_destination`	115	171 MSB 1, LSB 43	0-127
Waveform `lfo_2_waveform`	116	172 MSB 1, LSB 44	0-127
Start Phase `lfo_2_start_phase`	117	173 MSB 1, LSB 45	0-127
Trig Mode `lfo_2_trig_mode`	118	174 MSB 1, LSB 46	0-127
Depth `lfo_2_depth`	119 fine 63	175 MSB 1, LSB 47	0-16383

Misc

Control	CC	NRPN	Values
Pattern Mute `pattern_mute`	110	232 MSB 1, LSB 104	0-127

FX and master

Delay

Control	CC	NRPN	Values
Delay Time `delay_time`	85	256 MSB 2, LSB 0	0-127
Pingpong `delay_pingpong`	86	257 MSB 2, LSB 1	0-127
Stereo Width `delay_stereo_width`	87	258 MSB 2, LSB 2	0-127
Feedback `delay_feedback`	88	259 MSB 2, LSB 3	0-127
Highpass Filter `delay_highpass_filter`	89	260 MSB 2, LSB 4	0-127
Lowpass Filter `delay_lowpass_filter`	90	261 MSB 2, LSB 5	0-127
Reverb Send `delay_reverb_send`	91	262 MSB 2, LSB 6	0-127
Mix Volume `delay_mix_volume`	92	263 MSB 2, LSB 7	0-127

Reverb

Control	CC	NRPN	Values
Predelay `reverb_predelay`	24	264 MSB 2, LSB 8	0-127
Decay Time `reverb_decay_time`	25	265 MSB 2, LSB 9	0-127
Shelving Freq `reverb_shelving_freq`	26	266 MSB 2, LSB 10	0-127
Shelving Gain `reverb_shelving_gain`	27	267 MSB 2, LSB 11	0-127
Highpass Filter `reverb_highpass_filter`	28	268 MSB 2, LSB 12	0-127
Lowpass Filter `reverb_lowpass_filter`	29	269 MSB 2, LSB 13	0-127
Rev Pre/Post Comp `reverb_rev_pre_post_comp`	30	270 MSB 2, LSB 14	0-127
Mix Volume `reverb_mix_volume`	31	271 MSB 2, LSB 15	0-127

Compressor

Control	CC	NRPN	Values
Threshold `compressor_threshold`	111	272 MSB 2, LSB 16	0-127
Attack Time `compressor_attack_time`	112	273 MSB 2, LSB 17	0-127
Release Time `compressor_release_time`	113	274 MSB 2, LSB 18	0-127
Makeup Gain `compressor_makeup_gain`	114	275 MSB 2, LSB 19	0-127
Pattern Volume `compressor_pattern_volume`	119	280 MSB 2, LSB 24	0-127
Ratio `compressor_ratio`	115	276 MSB 2, LSB 20	0-127
Sidechain Source `compressor_sidechain_source`	116	277 MSB 2, LSB 21	0-127
Sidechain Filter `compressor_sidechain_filter`	117	278 MSB 2, LSB 22	0-127
Dry/Wet Mix `compressor_dry_wet_mix`	118	279 MSB 2, LSB 23	0-127

External in mixer

Control	CC	NRPN	Values
Input L Level `input_l_level`	102	286 MSB 2, LSB 30	0-127
Input L Pan `input_l_pan`	103	287 MSB 2, LSB 31	0-127
Input R Level `input_r_level`	104	288 MSB 2, LSB 32	0-127
Input R Pan `input_r_pan`	105	289 MSB 2, LSB 33	0-127
Input L Delay Send `input_l_delay_send`	106	290 MSB 2, LSB 34	0-127
Input R Delay Send `input_r_delay_send`	107	291 MSB 2, LSB 35	0-127
Input L Reverb Send `input_l_reverb_send`	108	292 MSB 2, LSB 36	0-127
Input R Reverb Send `input_r_reverb_send`	109	293 MSB 2, LSB 37	0-127
Stereo Input `stereo_input`	84	294 MSB 2, LSB 38	0-127

MIDI track

CC val

Control	CC	Values
VAL1 `val1`	70	0-127
VAL2 `val2`	71	0-127
VAL3 `val3`	72	0-127
VAL4 `val4`	73	0-127
VAL5 `val5`	74	0-127
VAL6 `val6`	75	0-127
VAL7 `val7`	76	0-127
VAL8 `val8`	77	0-127

Where these facts come from

Source documents

Digitakt User Manual, OS 1.53, dated 12 August 2026, its user manual, read on 1 October 2026 (the file read).
Digitakt OS Release Notes - Elektron, OS 1.53, its release notes, read on 1 October 2026 (the file read).

How they were read

User manual (97pp), OS 1.53: pp. 11, 15, 17, 24, 44, 51-52, 58-59, 69-71 and the CC and NRPN tables of APPENDIX B: MIDI at pp. 89-92, which is where every number here comes from.

The appendix prints 99 rows in nine sections. 95 become controls. The other four are the stereo halves of the external input mixer - Input L+R Level, Balance, Delay Send and Reverb Send - each of which shares both its CC and its NRPN with the mono row above it, so each is recorded as a note on the row it duplicates rather than as a parameter nobody can address separately. The manual explains why on p. 59: the DUAL parameter "sets if the inputs are processed as two separate mono inputs or as a single stereo input" (p. 59), and switching it off "changes the rest of the parameters from being separate controls for the left and right channel to single controls for both audio channels. The PAN parameters changes to a BAL (Balance) parameter." (p. 59). So one address means one thing or the other depending on that switch, which is itself the Stereo Input control below.

Thirty controller numbers mean more than one thing depending on which channel they arrive on. CC 70 is the filter's Attack Time on an audio track and VAL1 on a MIDI track; CC 102 is the LFO's Speed on an audio track and the external input's L Level on the FX channel; CC 112 is LFO 2's Speed and the compressor's Attack Time. So every control here names its part, and the NRPNs do not collide where the CCs do: the appendix gives audio track parameters NRPN MSB 1, the effects and master section 2, and the trig parameters 3.

NRPN is held as one number, MSB times 128 plus LSB, as this corpus does throughout. Two controls are 14-bit pairs, both of them an LFO's Depth, and the appendix gives each a CC LSB where no other row has one.

The FX channel's scope is the manual's own grouping rather than a sentence it writes. The channel menu says the FX CONTROL CH is "associated with the parameters on the DELAY and REVERB parameter pages" (p. 71), and the appendix also prints COMPRESSOR and EXTERNAL IN MIXER parameters, which the manual files under MASTER pages and never gives a channel. They are placed on the same part because the appendix gives all four tables NRPN MSB 2, which is how the document groups them; that is an inference from the maker's own addressing, and it is marked as one here rather than quoted.

Four things the manual leaves unsettled or says twice over, recorded and not resolved. The channel menu says "On TRACK A-H you can only control the parameters on the TRIG (NOT1, VEL, LEN, LFO.T) and LFO (all) PARAMETER pages" (p. 71), which does not include the eight CC VAL parameters the appendix gives for a MIDI track, and those sit on the MIDI track's own FLTR page. So the appendix addresses something the channel menu says that channel cannot reach, and the file follows the appendix, which is what it is for. The MIDI tracks are TRK 9-16 on the panel and throughout the manual, and TRACK A-H in the channel menu, for the same eight tracks. The INTERNAL MIXER page (p. 58) has no table in the appendix at all, so its parameters appear to have no address of either kind. And a knob sends CC or NRPN but not both: PARAM OUTPUT chooses between them (p. 70), so the appendix's two pairs of columns are alternatives rather than a pair of routes open at once.

One of the maker's own names disagrees with itself: the appendix prints SRR Routing at p. 89 where appendix C prints SSR Routing at p. 93 for the same parameter.

NOT RECORDED, and marked in place: what an audio track does with aftertouch or pitch bend arriving on its own channel, neither of which the manual mentions receiving - both appear only as things a MIDI track sends (p. 52) - and no bend range anywhere.