Create a schematic for Audio preamplifier circuit. 

libSymbols:
- Amplifier_Operational:TL072
- Audio:PT2399
- Connector:AudioJack2_SwitchT
- Device:C
- Device:C_Polarized
- Device:R
- Device:R_Potentiometer
- Diode:1N4148
- Transistor_BJT:2N3904
- power:+12V
- power:+5V
- power:-12V
- power:GND
schematicSymbols:
- libraryNickname: Device
  entryName: R_Potentiometer
  position:
    x: 55.88
    y: 138.43
    angle: 0
  properties:
  - key: Reference
    value: RV402
    position:
      x: 54.1274
      y: 137.2616
      angle: 0
  - key: Value
    value: 50k
    position:
      x: 54.1274
      y: 139.573
      angle: 0
- libraryNickname: Device
  entryName: C
  position:
    x: 118.11
    y: 99.06
    angle: 0
  properties:
  - key: Reference
    value: C406
    position:
      x: 121.031
      y: 97.8916
      angle: 0
  - key: Value
    value: 0.1u
    position:
      x: 121.031
      y: 100.203
      angle: 0
- libraryNickname: power
  entryName: GND
  position:
    x: 118.11
    y: 102.87
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0414'
    position:
      x: 118.11
      y: 109.22
      angle: 0
  - key: Value
    value: GND
    position:
      x: 118.237
      y: 107.2642
      angle: 0
- libraryNickname: Device
  entryName: C
  position:
    x: 107.95
    y: 99.06
    angle: 0
  properties:
  - key: Reference
    value: C403
    position:
      x: 110.871
      y: 97.8916
      angle: 0
  - key: Value
    value: 0.1u
    position:
      x: 110.871
      y: 100.203
      angle: 0
- libraryNickname: power
  entryName: GND
  position:
    x: 107.95
    y: 102.87
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0412'
    position:
      x: 107.95
      y: 109.22
      angle: 0
  - key: Value
    value: GND
    position:
      x: 108.077
      y: 107.2642
      angle: 0
- libraryNickname: power
  entryName: GND
  position:
    x: 109.22
    y: 78.74
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0413'
    position:
      x: 109.22
      y: 85.09
      angle: 0
  - key: Value
    value: GND
    position:
      x: 109.347
      y: 83.1342
      angle: 0
- libraryNickname: Device
  entryName: C_Polarized
  position:
    x: 113.03
    y: 73.66
    angle: 270
  properties:
  - key: Reference
    value: C405
    position:
      x: 113.03
      y: 67.183
      angle: 90
  - key: Value
    value: 47u
    position:
      x: 113.03
      y: 69.4944
      angle: 90
- libraryNickname: Device
  entryName: C
  position:
    x: 90.17
    y: 73.66
    angle: 0
  properties:
  - key: Reference
    value: C401
    position:
      x: 93.091
      y: 72.4916
      angle: 0
  - key: Value
    value: 0.1u
    position:
      x: 93.091
      y: 74.803
      angle: 0
- libraryNickname: Device
  entryName: C_Polarized
  position:
    x: 100.33
    y: 73.66
    angle: 0
  properties:
  - key: Reference
    value: C402
    position:
      x: 103.3272
      y: 72.4916
      angle: 0
  - key: Value
    value: 100u
    position:
      x: 103.3272
      y: 74.803
      angle: 0
- libraryNickname: power
  entryName: +5V
  position:
    x: 90.17
    y: 68.58
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0409'
    position:
      x: 90.17
      y: 72.39
      angle: 0
  - key: Value
    value: +5V
    position:
      x: 90.551
      y: 64.1858
      angle: 0
- libraryNickname: Device
  entryName: C
  position:
    x: 147.32
    y: 67.31
    angle: 0
  properties:
  - key: Reference
    value: C409
    position:
      x: 150.241
      y: 66.1416
      angle: 0
  - key: Value
    value: 680p
    position:
      x: 150.241
      y: 68.453
      angle: 0
- libraryNickname: Audio
  entryName: PT2399
  position:
    x: 130.81
    y: 81.28
    angle: 0
  properties:
  - key: Reference
    value: U404
    position:
      x: 130.81
      y: 61.7982
      angle: 0
  - key: Value
    value: PT2399
    position:
      x: 130.81
      y: 64.1096
      angle: 0
- libraryNickname: Device
  entryName: C
  position:
    x: 110.49
    y: 45.72
    angle: 270
  properties:
  - key: Reference
    value: C404
    position:
      x: 110.49
      y: 39.3192
      angle: 90
  - key: Value
    value: 4.7u
    position:
      x: 110.49
      y: 41.6306
      angle: 90
- libraryNickname: Device
  entryName: R
  position:
    x: 101.6
    y: 49.53
    angle: 0
  properties:
  - key: Reference
    value: R412
    position:
      x: 103.378
      y: 48.3616
      angle: 0
  - key: Value
    value: 100k
    position:
      x: 103.378
      y: 50.673
      angle: 0
- libraryNickname: power
  entryName: GND
  position:
    x: 101.6
    y: 53.34
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0411'
    position:
      x: 101.6
      y: 59.69
      angle: 0
  - key: Value
    value: GND
    position:
      x: 101.727
      y: 57.7342
      angle: 0
- libraryNickname: Device
  entryName: R
  position:
    x: 118.11
    y: 45.72
    angle: 90
  properties:
  - key: Reference
    value: R413
    position:
      x: 118.11
      y: 40.4622
      angle: 90
  - key: Value
    value: 15k
    position:
      x: 118.11
      y: 42.7736
      angle: 90
- libraryNickname: Device
  entryName: C
  position:
    x: 128.27
    y: 49.53
    angle: 0
  properties:
  - key: Reference
    value: C407
    position:
      x: 131.191
      y: 48.3616
      angle: 0
  - key: Value
    value: 4.7n
    position:
      x: 131.191
      y: 50.673
      angle: 0
- libraryNickname: power
  entryName: GND
  position:
    x: 128.27
    y: 53.34
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0415'
    position:
      x: 128.27
      y: 59.69
      angle: 0
  - key: Value
    value: GND
    position:
      x: 128.397
      y: 57.7342
      angle: 0
- libraryNickname: Device
  entryName: R
  position:
    x: 139.7
    y: 45.72
    angle: 90
  properties:
  - key: Reference
    value: R416
    position:
      x: 139.7
      y: 40.4622
      angle: 90
  - key: Value
    value: 10k
    position:
      x: 139.7
      y: 42.7736
      angle: 90
- libraryNickname: Device
  entryName: R
  position:
    x: 222.25
    y: 71.12
    angle: 90
  properties:
  - key: Reference
    value: R421
    position:
      x: 222.25
      y: 65.8622
      angle: 90
  - key: Value
    value: 1.5k
    position:
      x: 222.25
      y: 68.1736
      angle: 90
- libraryNickname: Amplifier_Operational
  entryName: TL072
  position:
    x: 90.17
    y: 45.72
    angle: 0
  properties:
  - key: Reference
    value: U403
    position:
      x: 90.17
      y: 36.3982
      angle: 0
  - key: Value
    value: TL072
    position:
      x: 90.17
      y: 38.7096
      angle: 0
- libraryNickname: Device
  entryName: R
  position:
    x: 78.74
    y: 55.88
    angle: 90
  properties:
  - key: Reference
    value: R407
    position:
      x: 78.74
      y: 50.6222
      angle: 90
  - key: Value
    value: 5.6k
    position:
      x: 78.74
      y: 52.9336
      angle: 90
- libraryNickname: Amplifier_Operational
  entryName: TL072
  position:
    x: 233.68
    y: 60.96
    angle: 0
  properties:
  - key: Reference
    value: U403
    position:
      x: 233.68
      y: 51.6382
      angle: 0
  - key: Value
    value: TL072
    position:
      x: 233.68
      y: 53.9496
      angle: 0
- libraryNickname: Device
  entryName: R
  position:
    x: 233.68
    y: 71.12
    angle: 270
  properties:
  - key: Reference
    value: R422
    position:
      x: 233.68
      y: 65.8622
      angle: 90
  - key: Value
    value: 5.6k
    position:
      x: 233.68
      y: 68.1736
      angle: 90
- libraryNickname: power
  entryName: GND
  position:
    x: 80.01
    y: 43.18
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0407'
    position:
      x: 80.01
      y: 49.53
      angle: 0
  - key: Value
    value: GND
    position:
      x: 80.137
      y: 47.5742
      angle: 0
- libraryNickname: Device
  entryName: R
  position:
    x: 90.17
    y: 55.88
    angle: 90
  properties:
  - key: Reference
    value: R410
    position:
      x: 90.17
      y: 50.6222
      angle: 90
  - key: Value
    value: 1.5k
    position:
      x: 90.17
      y: 52.9336
      angle: 90
- libraryNickname: power
  entryName: GND
  position:
    x: 223.52
    y: 58.42
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0419'
    position:
      x: 223.52
      y: 64.77
      angle: 0
  - key: Value
    value: GND
    position:
      x: 223.647
      y: 62.8142
      angle: 0
- libraryNickname: Device
  entryName: C
  position:
    x: 214.63
    y: 71.12
    angle: 90
  properties:
  - key: Reference
    value: C416
    position:
      x: 214.63
      y: 64.643
      angle: 90
  - key: Value
    value: 10u
    position:
      x: 214.63
      y: 66.9544
      angle: 90
- libraryNickname: Device
  entryName: R
  position:
    x: 139.7
    y: 36.83
    angle: 90
  properties:
  - key: Reference
    value: R415
    position:
      x: 139.7
      y: 31.5722
      angle: 90
  - key: Value
    value: 10k
    position:
      x: 139.7
      y: 33.8836
      angle: 90
- libraryNickname: Device
  entryName: R
  position:
    x: 175.26
    y: 111.76
    angle: 90
  properties:
  - key: Reference
    value: R419
    position:
      x: 175.26
      y: 106.5022
      angle: 90
  - key: Value
    value: 10k
    position:
      x: 175.26
      y: 108.8136
      angle: 90
- libraryNickname: Device
  entryName: R
  position:
    x: 175.26
    y: 104.14
    angle: 90
  properties:
  - key: Reference
    value: R418
    position:
      x: 175.26
      y: 98.8822
      angle: 90
  - key: Value
    value: 15k
    position:
      x: 175.26
      y: 101.1936
      angle: 90
- libraryNickname: Device
  entryName: R
  position:
    x: 175.26
    y: 119.38
    angle: 90
  properties:
  - key: Reference
    value: R420
    position:
      x: 175.26
      y: 114.1222
      angle: 90
  - key: Value
    value: 10k
    position:
      x: 175.26
      y: 116.4336
      angle: 90
- libraryNickname: power
  entryName: GND
  position:
    x: 179.07
    y: 90.17
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0416'
    position:
      x: 179.07
      y: 96.52
      angle: 0
  - key: Value
    value: GND
    position:
      x: 179.197
      y: 94.5642
      angle: 0
- libraryNickname: power
  entryName: GND
  position:
    x: 204.47
    y: 90.17
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0418'
    position:
      x: 204.47
      y: 96.52
      angle: 0
  - key: Value
    value: GND
    position:
      x: 204.597
      y: 94.5642
      angle: 0
- libraryNickname: Device
  entryName: R_Potentiometer
  position:
    x: 204.47
    y: 86.36
    angle: 0
  properties:
  - key: Reference
    value: RV403
    position:
      x: 202.7174
      y: 87.5284
      angle: 0
  - key: Value
    value: 50k
    position:
      x: 202.7174
      y: 85.217
      angle: 0
- libraryNickname: Device
  entryName: C
  position:
    x: 191.77
    y: 82.55
    angle: 90
  properties:
  - key: Reference
    value: C415
    position:
      x: 191.77
      y: 76.073
      angle: 90
  - key: Value
    value: 10u
    position:
      x: 191.77
      y: 78.3844
      angle: 90
- libraryNickname: Device
  entryName: C
  position:
    x: 179.07
    y: 86.36
    angle: 0
  properties:
  - key: Reference
    value: C413
    position:
      x: 181.991
      y: 85.1916
      angle: 0
  - key: Value
    value: 10n
    position:
      x: 181.991
      y: 87.503
      angle: 0
- libraryNickname: Device
  entryName: R
  position:
    x: 175.26
    y: 82.55
    angle: 90
  properties:
  - key: Reference
    value: R417
    position:
      x: 175.26
      y: 77.2922
      angle: 90
  - key: Value
    value: 5.6k
    position:
      x: 175.26
      y: 79.6036
      angle: 90
- libraryNickname: Device
  entryName: C
  position:
    x: 162.56
    y: 107.95
    angle: 0
  properties:
  - key: Reference
    value: C412
    position:
      x: 165.481
      y: 106.7816
      angle: 0
  - key: Value
    value: 680p
    position:
      x: 165.481
      y: 109.093
      angle: 0
- libraryNickname: Device
  entryName: C
  position:
    x: 147.32
    y: 85.09
    angle: 0
  properties:
  - key: Reference
    value: C410
    position:
      x: 150.241
      y: 83.9216
      angle: 0
  - key: Value
    value: 0.1u
    position:
      x: 150.241
      y: 86.233
      angle: 0
- libraryNickname: Device
  entryName: C
  position:
    x: 187.96
    y: 107.95
    angle: 0
  properties:
  - key: Reference
    value: C414
    position:
      x: 190.881
      y: 106.7816
      angle: 0
  - key: Value
    value: 4.7n
    position:
      x: 190.881
      y: 109.093
      angle: 0
- libraryNickname: power
  entryName: GND
  position:
    x: 187.96
    y: 111.76
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0417'
    position:
      x: 187.96
      y: 118.11
      angle: 0
  - key: Value
    value: GND
    position:
      x: 188.087
      y: 116.1542
      angle: 0
- libraryNickname: Device
  entryName: R
  position:
    x: 139.7
    y: 27.94
    angle: 90
  properties:
  - key: Reference
    value: R414
    position:
      x: 139.7
      y: 22.6822
      angle: 90
  - key: Value
    value: 8.2k
    position:
      x: 139.7
      y: 24.9936
      angle: 90
- libraryNickname: Device
  entryName: C
  position:
    x: 132.08
    y: 27.94
    angle: 270
  properties:
  - key: Reference
    value: C408
    position:
      x: 132.08
      y: 21.5392
      angle: 90
  - key: Value
    value: 4.7u
    position:
      x: 132.08
      y: 23.8506
      angle: 90
- libraryNickname: Device
  entryName: R
  position:
    x: 245.11
    y: 60.96
    angle: 270
  properties:
  - key: Reference
    value: R423
    position:
      x: 245.11
      y: 55.7022
      angle: 90
  - key: Value
    value: 1k
    position:
      x: 245.11
      y: 58.0136
      angle: 90
- libraryNickname: Amplifier_Operational
  entryName: TL072
  position:
    x: 67.31
    y: 91.44
    angle: 0
  properties:
  - key: Reference
    value: U402
    position:
      x: 67.31
      y: 82.1182
      angle: 0
  - key: Value
    value: TL072
    position:
      x: 67.31
      y: 84.4296
      angle: 0
- libraryNickname: Amplifier_Operational
  entryName: TL072
  position:
    x: 82.55
    y: 118.11
    angle: 0
  properties:
  - key: Reference
    value: U402
    position:
      x: 82.55
      y: 108.7882
      angle: 0
  - key: Value
    value: TL072
    position:
      x: 82.55
      y: 111.0996
      angle: 0
- libraryNickname: Transistor_BJT
  entryName: 2N3904
  position:
    x: 92.71
    y: 91.44
    angle: 0
  properties:
  - key: Reference
    value: Q401
    position:
      x: 97.536
      y: 90.2716
      angle: 0
  - key: Value
    value: 2N3904
    position:
      x: 97.536
      y: 92.583
      angle: 0
- libraryNickname: Device
  entryName: R
  position:
    x: 95.25
    y: 100.33
    angle: 0
  properties:
  - key: Reference
    value: R411
    position:
      x: 97.028
      y: 99.1616
      angle: 0
  - key: Value
    value: 1k
    position:
      x: 97.028
      y: 101.473
      angle: 0
- libraryNickname: Device
  entryName: R
  position:
    x: 78.74
    y: 91.44
    angle: 270
  properties:
  - key: Reference
    value: R408
    position:
      x: 78.74
      y: 86.1822
      angle: 90
  - key: Value
    value: 150k
    position:
      x: 78.74
      y: 88.4936
      angle: 90
- libraryNickname: power
  entryName: GND
  position:
    x: 95.25
    y: 104.14
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0410'
    position:
      x: 95.25
      y: 110.49
      angle: 0
  - key: Value
    value: GND
    position:
      x: 95.377
      y: 108.5342
      angle: 0
- libraryNickname: Device
  entryName: R
  position:
    x: 67.31
    y: 101.6
    angle: 270
  properties:
  - key: Reference
    value: R406
    position:
      x: 67.31
      y: 96.3422
      angle: 90
  - key: Value
    value: 100k
    position:
      x: 67.31
      y: 98.6536
      angle: 90
- libraryNickname: Device
  entryName: R
  position:
    x: 55.88
    y: 101.6
    angle: 270
  properties:
  - key: Reference
    value: R401
    position:
      x: 55.88
      y: 96.3422
      angle: 90
  - key: Value
    value: 100k
    position:
      x: 55.88
      y: 98.6536
      angle: 90
- libraryNickname: power
  entryName: GND
  position:
    x: 57.15
    y: 88.9
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0405'
    position:
      x: 57.15
      y: 95.25
      angle: 0
  - key: Value
    value: GND
    position:
      x: 57.277
      y: 93.2942
      angle: 0
- libraryNickname: Device
  entryName: R
  position:
    x: 82.55
    y: 128.27
    angle: 270
  properties:
  - key: Reference
    value: R409
    position:
      x: 82.55
      y: 123.0122
      angle: 90
  - key: Value
    value: 15k
    position:
      x: 82.55
      y: 125.3236
      angle: 90
- libraryNickname: Device
  entryName: R
  position:
    x: 63.5
    y: 118.11
    angle: 270
  properties:
  - key: Reference
    value: R402
    position:
      x: 63.5
      y: 112.8522
      angle: 90
  - key: Value
    value: 150k
    position:
      x: 63.5
      y: 115.1636
      angle: 90
- libraryNickname: power
  entryName: GND
  position:
    x: 72.39
    y: 115.57
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0406'
    position:
      x: 72.39
      y: 121.92
      angle: 0
  - key: Value
    value: GND
    position:
      x: 72.517
      y: 119.9642
      angle: 0
- libraryNickname: Connector
  entryName: AudioJack2_SwitchT
  position:
    x: 43.18
    y: 114.3
    angle: 0
  properties:
  - key: Reference
    value: J401
    position:
      x: 38.6334
      y: 112.5982
      angle: 0
  - key: Value
    value: AudioJack2_SwitchT
    position:
      x: 38.6334
      y: 114.9096
      angle: 0
- libraryNickname: power
  entryName: GND
  position:
    x: 48.26
    y: 116.84
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0401'
    position:
      x: 48.26
      y: 123.19
      angle: 0
  - key: Value
    value: GND
    position:
      x: 48.387
      y: 121.2342
      angle: 0
- libraryNickname: power
  entryName: GND
  position:
    x: 55.88
    y: 142.24
    angle: 0
  properties:
  - key: Reference
    value: '#PWR0404'
    position:
      x: 55.88
      y: 148.59
      angle: 0
  - key: Value
    value: GND
    position:
      x: 56.007
      y: 146.6342
      angle: 0
- libraryNickname: Diode
  entryName: 1N4148
  position:
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    y: 95.25
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globalLabels: []
sheetInstances: []
