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on board preamp vs. rack preamp vs pedal EQ

Discussion in 'Basses [BG]' started by hexagram49, Apr 24, 2005.

  1. hexagram49


    Mar 27, 2005
    i would like to know the advantages and disadvantages of the three, and what is the difference between using an active bass and using a passive with a rack preamp or perhaps a pedal EQ

    is there any difference?
  2. Steve


    Aug 10, 2001

    A rack preamp...along with the obvious tone shaping controls....does impedence matching and voltage amplification that allows you to drive a seperate power amplifier.

    an eq pedal will shape tone only

    an onboard pre-amp is for the most part, the same as an eq pedal and should probably be called something other than a pre-amp.

    Thats a start. I'm sure someone else will come along and get deeper into it.
  3. Philbiker

    Philbiker Pat's the best!

    Dec 28, 2000
    Northern Virginia, USA
    The biggest advantage of an on-board preamp is that it will do impedance matching and buffering on the individual pickups. On an unbuffered passive bass, if you blend pickups in any configuration other than FULL/FULL OFF/FULL and FULL/OFF there will be interference between the two pickups. An on-board preamp will cause the blending of the pickups to be much smoother. Though some like the effect from a passive pickup blend.

    Other than that, there's no difference other than specific frequencies and electronics quality. An EQ is an EQ is an EQ assuming thy're decently designed. All they do is boost and/or cut frequencies.

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