Discussion in 'Amps and Cabs [BG]' started by herrera, Jul 9, 2002.

  1. herrera


    Feb 15, 2002
    what is a pream and for what is??

    i mean ...onboard aguilar an i have hear some things about j retro i dont know who make them but

    does it impruve the sound?
  2. BlacksHole


    Mar 22, 2000
    Rockville, MD
    Traditional bass amps are a combination of preamp and power amp. The preamp contains the tone controls, intial gain stage, effects loop, etc. The power amp is strictly volume (although each power amp adds its own characteristics). If you buy separates, i.e., a power amp, then you also need to buy some kind of a preamp as a power amp is not designed to take a signal directly from a bass.
  3. VicDamone


    Jun 25, 2000
    Onboard (in the instrument) preamps are usually designed to make a passive pickup system active. Active on board preamps usually have a power source such as a 9V battery which boosts the signal from the instruments pickups onto the amplifiers preamp/head so there's a greater signal going into the head.
    Some onborads my offer more in the way of EQ and pickup polarity. Wheather or not these preamps improve an instruments sound can be subjective, so you should decide for yourself.