{
  "source": "Ableton_Core/Keys_Manager/fx_lock_fields.json",
  "evidence_scope": "Prior local calibration / official firmware static analysis; not all parameters retested on 2026-10-08",
  "fields": [
    {
      "id": 73,
      "page": "META",
      "label": "None",
      "lockable": false,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1410940
    },
    {
      "id": 4,
      "page": "EXT",
      "label": "Ext.L Chorus",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1410996,
      "nrpn": 0
    },
    {
      "id": 5,
      "page": "EXT",
      "label": "Ext.L Delay",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411052,
      "nrpn": 1
    },
    {
      "id": 6,
      "page": "EXT",
      "label": "Ext.L Reverb",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411108,
      "nrpn": 2
    },
    {
      "id": 2,
      "page": "EXT",
      "label": "Ext.L Pan",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411164,
      "nrpn": 3
    },
    {
      "id": 0,
      "page": "EXT",
      "label": "Ext.L Volume",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411220,
      "nrpn": 4
    },
    {
      "id": 7,
      "page": "EXT",
      "label": "Ext.R Chorus",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411276,
      "nrpn": 5
    },
    {
      "id": 8,
      "page": "EXT",
      "label": "Ext.R Delay",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411332,
      "nrpn": 6
    },
    {
      "id": 9,
      "page": "EXT",
      "label": "Ext.R Reverb",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411388,
      "nrpn": 7
    },
    {
      "id": 3,
      "page": "EXT",
      "label": "Ext.R Pan",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411444,
      "nrpn": 8
    },
    {
      "id": 1,
      "page": "EXT",
      "label": "Ext.R Volume",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411500,
      "nrpn": 9
    },
    {
      "id": 26,
      "page": "Chorus",
      "label": "Predelay",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411556,
      "nrpn": 40
    },
    {
      "id": 27,
      "page": "Chorus",
      "label": "Speed",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411612,
      "nrpn": 41
    },
    {
      "id": 28,
      "page": "Chorus",
      "label": "Depth",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411668,
      "nrpn": 42
    },
    {
      "id": 29,
      "page": "Chorus",
      "label": "Width",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411724,
      "nrpn": 43
    },
    {
      "id": 30,
      "page": "Chorus",
      "label": "Feedback",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411780,
      "nrpn": 44
    },
    {
      "id": 31,
      "page": "Chorus",
      "label": "HP Filter",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411836,
      "nrpn": 45
    },
    {
      "id": 32,
      "page": "Chorus",
      "label": "LP Filter",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411892,
      "nrpn": 46
    },
    {
      "id": 33,
      "page": "Chorus",
      "label": "Delay Send",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1411948,
      "nrpn": 47
    },
    {
      "id": 34,
      "page": "Chorus",
      "label": "Reverb Send",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412004,
      "nrpn": 48
    },
    {
      "id": 35,
      "page": "Chorus",
      "label": "Mix Volume",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412060,
      "nrpn": 49
    },
    {
      "id": 36,
      "page": "DEL",
      "label": "Delay Time",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412116,
      "nrpn": 50
    },
    {
      "id": 37,
      "page": "Delay",
      "label": "Pingpong",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412172,
      "nrpn": 51
    },
    {
      "id": 39,
      "page": "Delay",
      "label": "Stereo Width",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412228,
      "nrpn": 53
    },
    {
      "id": 40,
      "page": "Delay",
      "label": "Feedback",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412284,
      "nrpn": 54
    },
    {
      "id": 41,
      "page": "Delay",
      "label": "HP Filter",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412340,
      "nrpn": 55
    },
    {
      "id": 42,
      "page": "Delay",
      "label": "LP Filter",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412396,
      "nrpn": 56
    },
    {
      "id": 43,
      "page": "Delay",
      "label": "Overdrive",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412452,
      "nrpn": 57
    },
    {
      "id": 44,
      "page": "Delay",
      "label": "Reverb Send",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412508,
      "nrpn": 58
    },
    {
      "id": 45,
      "page": "Delay",
      "label": "Mix Volume",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412564,
      "nrpn": 59
    },
    {
      "id": 46,
      "page": "Reverb",
      "label": "Pre-delay",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412620,
      "nrpn": 60
    },
    {
      "id": 47,
      "page": "Reverb",
      "label": "Decay Time",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412676,
      "nrpn": 61
    },
    {
      "id": 48,
      "page": "Reverb",
      "label": "Shelving Freq",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412732,
      "nrpn": 62
    },
    {
      "id": 49,
      "page": "Reverb",
      "label": "Shelving Gain",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412788,
      "nrpn": 63
    },
    {
      "id": 50,
      "page": "Reverb",
      "label": "HP Filter",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412844,
      "nrpn": 65
    },
    {
      "id": 51,
      "page": "Reverb",
      "label": "LP Filter",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412900,
      "nrpn": 66
    },
    {
      "id": 52,
      "page": "Reverb",
      "label": "Mix Volume",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1412956,
      "nrpn": 69
    },
    {
      "id": 53,
      "page": "LFO1",
      "label": "Speed",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413012,
      "nrpn": 80
    },
    {
      "id": 55,
      "page": "LFO1",
      "label": "Multiplier",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413068,
      "nrpn": 81
    },
    {
      "id": 57,
      "page": "LFO1",
      "label": "Fade In/Out",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413124,
      "nrpn": 82
    },
    {
      "id": 59,
      "page": "LFO1",
      "label": "Start Phase",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413180,
      "nrpn": 83
    },
    {
      "id": 61,
      "page": "LFO1",
      "label": "Trig Mode",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413236,
      "nrpn": 84
    },
    {
      "id": 63,
      "page": "LFO1",
      "label": "Waveform",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413292,
      "nrpn": 85
    },
    {
      "id": 65,
      "page": "LFO1",
      "label": "Dest A",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413348,
      "nrpn": 86
    },
    {
      "id": 69,
      "page": "LFO1",
      "label": "Depth A",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413404,
      "nrpn": 87
    },
    {
      "id": 66,
      "page": "LFO1",
      "label": "Dest B",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413460,
      "nrpn": 88
    },
    {
      "id": 70,
      "page": "LFO1",
      "label": "Depth B",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413516,
      "nrpn": 89
    },
    {
      "id": 54,
      "page": "LFO2",
      "label": "Speed",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413572,
      "nrpn": 90
    },
    {
      "id": 56,
      "page": "LFO2",
      "label": "Multiplier",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413628,
      "nrpn": 91
    },
    {
      "id": 58,
      "page": "LFO2",
      "label": "Fade In/Out",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413684,
      "nrpn": 92
    },
    {
      "id": 60,
      "page": "LFO2",
      "label": "Start Phase",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413740,
      "nrpn": 93
    },
    {
      "id": 62,
      "page": "LFO2",
      "label": "Trig Mode",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413796,
      "nrpn": 94
    },
    {
      "id": 64,
      "page": "LFO2",
      "label": "Waveform",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413852,
      "nrpn": 95
    },
    {
      "id": 67,
      "page": "LFO2",
      "label": "Dest A",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413908,
      "nrpn": 96
    },
    {
      "id": 71,
      "page": "LFO2",
      "label": "Depth A",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1413964,
      "nrpn": 97
    },
    {
      "id": 68,
      "page": "LFO2",
      "label": "Dest B",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1414020,
      "nrpn": 98
    },
    {
      "id": 72,
      "page": "LFO2",
      "label": "Depth B",
      "lockable": true,
      "provenance": "https://www.elektron.se/wp-content/uploads/2024/10/Analog-Four_Analog-Keys_OS1.52_dist.zip",
      "verification": "official OS 1.52 descriptor and lock-writing path; static analysis",
      "firmware_offset": 1414076,
      "nrpn": 99
    }
  ]
}