The Homebrew Electronics Hematoma Bass Preamp Overdrive features a 5db preamp coupled with an overdrive. Both can be used simultaneously or independently. Check out the Homebrew Hematoma Bass Preamp Overdrive pedal.

The Tech 21 SansAmp Bass Driver DI Preamp has revolutionized the way bass players sound. If you are looking for $2000 tone for $200, try the Tech 21 SansAmp Bass Driver DI Preamp Pedal.

The Tech 21 SansAmp Para Driver DI Preamp Pedal is a floor version of the RPM rackmounts unit. Designed to give your instrument a natural tubelike warmth and presence, try the amazing Tech 21 SansAmp Para Driver DI Preamp Pedal today.

The Tech 21 SansAmp Programmable Bass Driver DI Pedal gives you your favorite Bass Driver tones and circuitry, but lets you program 3 settings that can be recalled via footswitch! Check out the Tech 21 SansAmp Programmable Bass Driver DI Pedal!

The Tech 21 Sansamp PSA1.1 Preamplifier is one of easiest to use most versatile preamps on the market. If you need a preamp, the Tech 21 Sansamp PSA1.1 Preamplifier has toured the world and is ready for you.

The Exotic Effects Tri-Logic Bass Preamp pedal is a new, very natural sounding preamplifier for bass guitar. Featuring a Gain boost/cut of up to 4x and a selector for High or Low Midrange adjustment, the Xotic Tri-Logic Bass Preamp can give you any tone you desire.