guitar preamp

Discussion in 'The Projects Forum' started by shin, Feb 11, 2008.

  1. shin

    Thread Starter Member

    Oct 16, 2006
    16
    0
    i'm looking for a cheap op amp that suitable for guitar pre amp circuit...can u tell me the model...
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    TL071, TL072, TL074 depending on whether you want a single, dual or quad op amp.
    Good, cheap, and no latch-up (phase reversal)
     
  3. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    Most older FET input opamps like the TL07x and TL08x opamps have phase reversal when an input goes lower than the allowed negative common-mode voltage. The first time I saw it I replaced the "defective" opamp but the replacement did the same.
     
  4. lespaul

    Active Member

    Jan 30, 2008
    49
    2
    Two chips that come to mind are the RC4558 and the RC4739. They are low noise and very suitable for audio projects. You can also add opposing diodes or LED's in the feedback chain to create overdrive. This is a common technique used in many popular distortion and overdrive guitar pedals.
     
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