Rocktron GDP ProRax

Rocktron GDP ProRax

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GDP ProRax, Solid-State Guitar Preamp from Rocktron.

1 user review
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Rocktron GDP ProRax tech. sheet

  • Manufacturer: Rocktron
  • Model: GDP ProRax
  • Category: Solid-State Guitar Preamps
  • Added in our database on: 01/20/2008

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Rocktron GDP ProRax user reviews

Average Score:5.0(5/5 based on 1 review)
 1 user review100 %
Déjà vu07/20/2013

Déjà vu's review (This content has been automatically translated from French)

Rocktron GDP ProRax
Analog preamp distortion very solid half rack format.
Front, one can find several settings including the bass, mids that can be refined with a parametric equalizer that goes from 0.5 to 4 kHz, a gain setting accompanied by a noise gate, treble A general volume and on / off button.
At the rear, there is a jack for a footswitch that is not included and I've never used an entrance, an output jack and 2 taken in power (for AC adapter) and power out .


The settings can be intuitively without manual. The parametric equalizer mediums is very interesting because it provides additional shades to customize your sound. The breath that could appear with a significant gain can be very effectively mate adjusting the Threshold setting.


Simply used a Red Box direct output mixer with a guitar pickup with a Seymour Duncan Invader SH8, this preamp can provide more than one in a register saturation type Hard Rock.


I used it for ten years to my distorted sound but I have not had the opportunity to compare with other preamps. I use it more now because I went to the Tonelab that offers more versatility in terms of settings and sound. But I'm not ready to part with because I think that I might be still need its sound. It really is a serious little preamp that provides rhythmic as solo and has more than 20 years.

Rocktron GDP ProRax images

  • Rocktron GDP ProRax

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Other names: gdp prorax, gdpprorax, gdp pro rax

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