Tech 21 SansAmp Character VT Bass DI Preamp Pedal

92 out of 100. Incorporating 325+ ratings and reviews.
Tech 21


  • Sound coloring can be too pronounced.
  • Drive knob may attenuate low frequencies.


  • Offers a tone reminiscent of SVT tube amps.
  • Loved by P-bass owners and passive pickup users.
  • Solid build.
  • Continues to receive high ratings over the years.

The Tech 21 SansAmp Character VT is a preamp that reproduces the voicing of old Ampeg SVT Tube bass amps in a compact pedal format.

What separates this from other preamp models is its Character knob, which changes the Drive voicing as you go higher, from a vintage SVT tube tone to a compressed modern tone. The Drive knob lets you set the amount of overdrive type effect, which as mentioned earlier, is affected by the Character knob.

For more tone shaping, there’s a Bite button that tightens up the low frequencies while adding punch to the high frequencies.

Other features include Speaker Simulation, 3-Band EQ, Level, Blend, and multiple DI outputs. If you’re a fan of the classic SVT tube sound, or if you’re looking for a preamp to color your tone, then this is for you.


  • Preamp: SansAmp
  • Controls: Level, Blend, Low, Mid, High, Character, Drive, Phantom, – 10dB 1/4″ Pad, -20dB XLR Pad, Bite, Speaker Simulation
  • DI Function: XLR Balanced Out
  • Input: 1 x 1/4″
  • Output: 1 x 1/4″ Parallel, 1 x Balanced XLR, 1 x 1/4″ Unbalanced
  • Power: Optional AC Adapter or 9V Battery
  • Dimensions: 2.5″ x 5.75″ x 4.25″
  • Weight: 4.25 lbs

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