Boss Sd-1: Mij, Mij, And Mit

Discussion in 'Effects, Pedals, Strings & Things' started by cardinal, Jul 11, 2019.

  1. cardinal

    cardinal Member

    Messages:
    4,754
    Joined:
    Feb 26, 2008
    So I have a few of these at the house and thought some folks might find it interesting.

    '81:
    [​IMG]
    NEC c4558c, dark green caps, huge electrolytic cap above the chip, "510A" on the board

    '85:
    [​IMG]
    JRC 4558DD, bright green caps, smaller electrolytic cap above the chip, 510B on the board

    Recent MIT (sorry for the bad pic)
    [​IMG]
    JRC 4558DD, silver caps.

    Some other minor difference (like the size of those four ceramic caps).

    They all sound like an SD-1. My initial impression was that the '81 was brighter with less saturation, the '85 was warmer with more saturation, and the MIT was somewhere in the middle.

    But after playing for a bit and switching back and forth, I'm not sure I actually can tell them apart.
     
    Last edited: Jul 11, 2019
  2. Phil the Kill Bill V2 guy

    Phil the Kill Bill V2 guy Member

    Messages:
    423
    Joined:
    Sep 11, 2018
    All I know is I have an '81 SD1 and it's got a permanent spot on my pedal board.
    I've owned or still own a Rat, a Tube Screamer, a Chandler Tube Driver, and a Boss OD-1X....still like the SD1 best if all.
     
    cardinal likes this.
  3. cardinal

    cardinal Member

    Messages:
    4,754
    Joined:
    Feb 26, 2008
  4. GuitarTo

    GuitarTo Member

    Messages:
    54
    Joined:
    Dec 24, 2015
    MIJ has the bleed problem?
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice