SAGE built-in guitar preamp 1.3

by Aufwiegler.
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2 layer board of 3.05x0.80 inches (77.42x20.24 mm).
Shared on November 28th, 2016 15:12.

Guitar preamp with some sound effects.

Based on http://www.sugardas.lt/~igoramps/article51.htm

Parts list:

  • U1 - TL072
  • C1 - 22uF
  • C2 - 100 nF
  • С3 - 2.2uF
  • C4, C6 4.7 nF
  • С5 47 nF
  • C7 150 nF
  • C8 3.3 uF
  • C9 1 uF
  • R1, R2 47k
  • R3 1M
  • R4 33k
  • R5 820k
  • R6 5.6k
  • R7 2.2k
  • R8 150
  • R9 220
  • Alter - 10k linear pot
  • Switch - ON-OFF-ON

    Pads

  • ‘+’ is 9V cell
  • ‘-’ is ground
  • IN to pickup selection switch
  • OUT to VOLUME pot
  • S1 and S3 to ON-OFF-ON switch (common pin to ground) ALTER pot are to be soldered with three pads near mounting hole, board uses 24 mm pot
    Schematics

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