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Mesa Bass 400/400+ Preamps - Which do you use?

Discussion in 'Amps and Cabs [BG]' started by chaosMK, Aug 24, 2012.

  1. Input 1

    3 vote(s)
  2. Input 2

    6 vote(s)
  1. chaosMK


    May 26, 2005
    Albuquerque, NM
    Hi-fi into an old tube amp
    I've been spending more time with my Bass 400 through a Megoliath (a very detailed/clear sounding 8x10) and with a recent thread on soft clipping, I have really gotten into exploring the subtleties of the two preamps on this head.

    Input 1: Lower volume/gain, a little rounder. Slightly more focused breakup.

    Input 2: Bold, clear, a little more "square", higher volume. Breakup comes quick and wide.

    I have almost always used Input 2 (which is supposed to be the preamp from the D180... I own a D180 and find going through Input 1 has a more similar type of voicing) but am interested in using an A/B/Y switch again to have one "channel" breakup a lot more for OD/compression purposes.

    Anyway... killer amp. Between the two inputs and footswitchable EQ you can get a lot of sounds out of it.
  2. BBQV


    Feb 13, 2010
    Uppsala, Sweden
    I used to have a 400 non plus for a couple of years and I used Input 2 all the time. I like the sound of tubes being pushed and find Input 1 too clean.
  3. BoomBoomOGTL

    BoomBoomOGTL Supporting Member

    I run my passive J basses and Ric 4001 into the high gain Ch2 and absolutely love it through my SWR Goliath Sr.

    I can't run my Corvette $$ into the Ch2 w/o it totally overloading the input so I'm forced to use Ch1 but I can still crank the gain to the same level (on the knobs) as channel 2.
  4. MaceTheBass


    Mar 15, 2009
    What about a third option: using both inputs
  5. anderbass


    Dec 20, 2005
    Phoenix. Az.
    Yes, I'm with Mace and vote both inputs too!
  6. Caca de Kick

    Caca de Kick Supporting Member

    Nov 18, 2002
    Seattle / Tacoma
    I run my hot active basses into input 1, and my passive and lower output basses into input 2.
    With the differences in the output of the basses plugged into the appropriate channel I hear no difference in the sound coming from the speakers.

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