The John East preamp club

Discussion in 'Pickups & Electronics [BG]' started by datsaxguy, May 16, 2013.

  1. Funkinthetrunk

    Funkinthetrunk Registered User Supporting Member

    As promised. Uni Pre really makes for a clean installation.

  2. desert_rain


    Jul 14, 2015
    Hi ihave deluxe bass and i really like its knobs. So I wanna replace East knos with deluxe stacked knobs but they dont fit to John east shafts. So How did you mod the fender stacked knob? did you drill them? Thanks!
  3. J.Wolf


    Apr 29, 2003
    Asheville, NC
    Contributor- Bass Musician Magazine
    dang that IS clean. There's a lot of wires and stuff with those Uni Pre's. thats about the cleanest install I've seen
    Funkinthetrunk likes this.
  4. 76jazzbass

    76jazzbass Supporting Member

    Jul 7, 2008
    I had sent this in a PM a while back... Good luck!

    (1) Genuine Fender 90s 00s Deluxe Black Stacked Jazz Bass Knob 004-9411-000

    you will need 3. They were the lowest I found at the time. They aren't cheap but liked it much more.
    I took the East knobs and just found a drill bit that was as close to the hole as possible. Dont forget to back the set screws all the way out of Fender knobs before drilling. The bottoms pretty much pressed on and the set screw didn't do much but it never slipped. The top was more touchy and best to do with a drill press if available. The part to be most careful about was the depth of the hole in top knobs. You should feel little resistance drilling it out and when you hit bottom it'll take more effort and stop right away.
    desert_rain likes this.
  5. J.Wolf


    Apr 29, 2003
    Asheville, NC
    Contributor- Bass Musician Magazine
    Anyone know if East makes a preamp for a jazz plate that includes the mid stack? I see the new Jazz pre that is different than the J-retro, using the treble and bass from the Uni Pre, but I'm looking for essentially a uni pre on a jazz plate, if thats not a total pipe dream.
  6. ctmullins

    ctmullins fueled by beer and coconut Gold Supporting Member

    Apr 18, 2008
    MS Gulf Coast
    I'm highly opinionated and extremely self-assured

    The original J-Retro has the mid stack.

    J-RETRO 01 - BASS
  7. J.Wolf


    Apr 29, 2003
    Asheville, NC
    Contributor- Bass Musician Magazine
    the original J retro has the built in upper mid curve that the newer Uni pre and the SPM2 modules don't have. Which I dont want. Unless the J retros now have the internal jumper, allowing you to bypass the mid curve for a flat response....
  8. DaveAceofBass

    DaveAceofBass Supporting Member

    Feb 20, 2004
    Charlotte, NC
    Contact John. They were making a “flat response” version for a while.
    Mr_O'B and J.Wolf like this.
  9. desert_rain


    Jul 14, 2015
    Thanks man! I will go with your way ;)
    76jazzbass likes this.
  10. chadhargis

    chadhargis Jack of all grooves, master of none Supporting Member

    Jan 5, 2010
    Nashville, TN
    Just ordered my third John East pre. I have a J-Retro in a Jazz V (currently for sale in the classifieds), a Uni-Pre 5 knob in a Lakland 55-02, and I'm having a custom bass built (see here: New Moonshine Guitars custom bass!) which will have a 4 knob UNI-Pre installed.

    I've used many onboard preamps over the years, including some high end ones such as the Mike Pope Flexcore, and John's beats them all!
    GBassNorth, bebi and Eugene.thomas87 like this.
  11. kesslari

    kesslari Groovin' with the Fusion Cats Staff Member Gold Supporting Member

    Dec 21, 2007
    Santa Cruz Mtns, California
    Lark in the Morning Instructional Videos; Audix Microphones
    I put an ACG EQ01 (designed/built by John East) in my Zon. Loving it.
    Recent recording:
  12. warnan


    Mar 1, 2004
    uni pres on Lakland and Retro deluxe on Modulus.
    Last edited: Aug 24, 2018
    Kubicki Fan, metermech, bebi and 3 others like this.
  13. fast slapper

    fast slapper Supporting Member

    Dec 11, 2001
    Fresno, CA
    Any more reports on the Uni-Pre? Literally has everything I would wish for in a pre-amp. Thinking of pairing one with Bartolini 2J Squared pickups in an Ibanez Premium.
    4StringTheorist likes this.
  14. J.Wolf


    Apr 29, 2003
    Asheville, NC
    Contributor- Bass Musician Magazine
    the report is VERY good. Having played a whole lot of onboards including some of the fanciest and most boutique ones, the Uni Pre basically smokes everything from the perspectives of design, build quality, ease of installation, reliability, tone, and tone shaping capability. They are the cats pajamas.
  15. Funkinthetrunk

    Funkinthetrunk Registered User Supporting Member

    Been meaning to post the completed bass with John's Uni-Pre(amp). Absolute killer sounding instrument.

    Kubicki Fan, kesslari, bebi and 5 others like this.
  16. CElton

    CElton I'm a new note finder...

    Good grief! That Uni in that 55- must be glorious! What a match.
    warnan likes this.
  17. jumbodbassman

    jumbodbassman Supporting Member

    Dec 28, 2009
    Stuck in traffic -NY & CT
    Born Again Tubey
    stunning bass. what is it???
  18. chadhargis

    chadhargis Jack of all grooves, master of none Supporting Member

    Jan 5, 2010
    Nashville, TN
    I think there would be a big market for a John East Preamp pedal. Use memory pots to have programability (similar to the Sansamp BDDI programmable).

    Imagine having a Uni-Pre running 18v inside a pedal that you could use with every bass you!
    Kubicki Fan likes this.
  19. J.Wolf


    Apr 29, 2003
    Asheville, NC
    Contributor- Bass Musician Magazine
    Hog Branch Austin and chadhargis like this.
  20. mustBmtd

    mustBmtd Supporting Member

    Sep 28, 2012
    Here's my family if these count. ACG EQ01 and EQ02, And last but not least my John East J Retro Deluxe. 20180921_103226.jpg 20180921_103255.jpg 15332503160801136739349173436695.jpg
    warnan likes this.
  21. Primary

    Primary TB Assistant

    Here are some related products that TB members are talking about. Clicking on a product will take you to TB’s partner, Primary, where you can find links to TB discussions about these products.

    Aug 3, 2021

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