14 Opamp Chips Tested with Timmys----Judge for yourself in audio test

Discussion in 'Pedals and Effects Demo Videos and Soundclips' started by Angle Loss, Jun 22, 2007.

  1. smogfalls

    smogfalls Member

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    awesome, thanks so much for this invaluable learning material! Very helpful indeed. :dude
     
  2. emeka

    emeka Member

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    Thanks for the time and effort. I have some swapping to do myself, mostly for kicks as I have no problem with the JRC4559... I'll try the LM1458 next.
     
  3. goldie-gold

    goldie-gold Member

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    That was fantastic. Thanks for doing that.

    I did some chip swapping in my E and found it to be an interesting excercise.

    I found with the E, and feel from your clips, that swapping the chip changes everything and nothing all at once. What I mean is that the many of the intricacies of the sound change all at once, but by a very small amount.

    I question whether the listener picks up on these changes, although I know for myself that small changes in sound really affect my enjoyment and therefore the freeness of my playing - I think the listener certainly hears this.
     
  4. stratplayer80

    stratplayer80 Senior Member

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    Thanks for taking time to do the comparisons. I like the JRC chip best
     
  5. DT7

    DT7 Member

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    The "mystery chip" sounds to me like it's a JFET input opamp...not bi-polar. All the TL0XX series are JFET...and there are others. :cool:
     
  6. Angle Loss

    Angle Loss Member

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    It has been a while since I've updated this thread and there seems to be a fair amount of people looking for this info. Thanks to the number of people who have contacted me privately to let me know that this thread helped them out.

    btw, I still have my two custom color Timmys (Copper Rust, Turquoise) and am using them on my big gig board and smaller church board. I am still using a TL072 in both of them and highly recommend it for a clean bright tone.
    :banana
     
  7. WhoJamFan

    WhoJamFan Supporting Member

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    Very cool! Thank you!
     
  8. WhoJamFan

    WhoJamFan Supporting Member

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    wow-now it's a $1.25 to hear it, or did I do this wrong?
     
  9. Angle Loss

    Angle Loss Member

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    It shouldn't be costing you anything...I just tried to listen to it on soundclick and there was no charge (and I wasn't logged in, btw). Try it again, you should be able to listen to it online.
     
  10. 0xeneye

    0xeneye Supporting Member

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    I liked the JRC4459 , the LM1455A, and of course the "Eternity mystery chip", which , I guess, will remain a mystery.
     
  11. geetarplayer

    geetarplayer Member

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    Thanks for doing this. I don't hear much difference at all. And whatever difference there is can probably be dialed back in to make them sound like each other with the other tone controls one already has on the guitar/pedals/amp.

    I just ordered an LM1458 a few days ago - and as a matter of fact ordered 3 extra for some friends to try. Dang - the chips are cheaper than the shipping so what the heck.

    Can't wait to try it.
     
  12. catfishmusic

    catfishmusic Member

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    An old thread I know, but thanks a lot for taking the time to do this super helpful shootout clip. Thanks in part to the OP, I have a Timmy on the way w a LM1458.
     
    Last edited: Sep 1, 2013
  13. Jim Moulton

    Jim Moulton Member

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    Thanks for taking the time for this, some chips were a bit warmer, pedal is a bit harsh for me on most chips. I have never tried a Timmy, don't think it is suited for what I do.:rimshot
     
  14. Angle Loss

    Angle Loss Member

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    Thanks for the comments, I'm glad it has helped. I'm using my teal Timmy on one board and a Tim (with a silicon Fuzz Face on the boost switch--EJ in a box kind of thing).

    fwiw, after all these years, I'm still using the TL072 in the Timmy and the stock JRC4559 in the Tim. I love those chips!
     
    Last edited: Apr 1, 2014
  15. Monster265

    Monster265 Supporting Member

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    Thanks for producing this sound clip.

    Playback timeline location.

    0:39 JRC4559
    0:56 RC4559
    1:09 RC4558
    1:25 JRC4558
    1:39 TA7558
    1:55 LM1458
    2:10 TL072ACN
    2:27 TL072CT
    2:43 TL082CP
    2:59 TL062CN
    3:15 TSH22IN
    3:30 Mr Eternity chip
    3:46 TL02202CP
    4:03 Brown Burr OPA2804AP
     
    Angle Loss likes this.
  16. Jim Moulton

    Jim Moulton Member

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    Monster, thanks for the list, one thing it shows is that the chip is the small part of the sound of a pedal, radio shack carries lots of these cheap parts, it takes a lot of knowledge to build a good pedal,
     
  17. RCstudios

    RCstudios Gold Supporting Member

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    Was interested in how chips change sound...
     
  18. ChampReverb

    ChampReverb Silver Supporting Member

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    The two JRC's, the Brown Burr and the last TL062CN sounded best to me.

    Of course, I'm listening on an iPhone so there goes all of my cred.

    -bEn r.
     

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