The GUPtech GrindR Truck Driver Shawn Edition is a clean boost pedal with a switchable preamp, offered through GUPtech's Custom Shop. The maker describes it as a three-in-one design: 20 dB of clean boost, plus a bypassable preamp with bass and treble controls, switchable with the left toggle. The Truck Driver Shawn edition carries the same boost power as the standard GrindR in a new sparkly look1.
Controls and modes
The pedal's two toggles and its knobs cover three modes:
| Control | What it does |
|---|---|
| Left toggle | Bypasses or engages the preamp; in "P" (Preamp) position, Bass and Treble become active1 |
| Right toggle | Switches between the original "Grind" EQ and the "33" EQ1 |
| Bass and Treble | Preamp EQ controls, active in Preamp position1 |
| Level | Output level; the only control active in "B" (Bypass) mode, alongside the EQ type1 |
In "B" (Bypass) mode, you only have Level and EQ type control, so the pedal works as a straightforward boost with a choice of EQ character. Engaging the preamp with the left toggle brings the Bass and Treble controls into play1.
Power requirements
GUPtech specifies 9Vdc only, center negative, and warns that anything over 9V will blow the pedal. Do not run it from a higher-voltage output on a power supply.
Power consumption is listed at 21mA1, a low draw that most pedalboard power supplies can handle on a single output.
Availability and related editions
The Truck Driver Shawn edition is a special edition available via the Custom Shop, and GUPtech's page currently lists it as sold out1. It is one of several Custom Shop and artist versions of the GrindR, including the GrindR Plem Edition, the GrindR Douche Edition and the GrindR Derryl Vi Artist edition, all built around the same 20 dB boost and switchable preamp design1.
Videos
Truck Driver Shawn
Questions
What power supply does the GrindR Truck Driver Shawn Edition need?
GUPtech specifies 9Vdc only, center negative. The maker warns that anything over 9V will blow the pedal, so it should be run from a 9V supply or a 9V output on a pedalboard power supply, never from a higher-voltage output.
How much current does the GrindR Truck Driver Shawn Edition draw?
GUPtech lists power consumption at 21mA, which is low enough that most standard pedalboard power supplies can handle it on one of their outputs.
How much clean boost does the GrindR Truck Driver Shawn Edition give?
The pedal provides 20 dB of clean boost, according to GUPtech's product page. That is enough to push an amp harder or lift a quiet signal without adding distortion of its own.
What does the right toggle do on the GrindR Truck Driver Shawn Edition?
The right toggle switches between the original Grind EQ and the 33 EQ, letting you choose the pedal's EQ character. In B (Bypass) mode, only the Level control and the EQ type are active.
Is the GrindR Truck Driver Shawn Edition still available?
No. As of 26 October 2026, GUPtech's product page lists the Truck Driver Shawn edition as sold out. It was a special edition offered through the company's Custom Shop, so availability depended on when GUPtech opened Custom Shop runs.
Sources (1)
- GrindR Truck Driver Shawn Edition, GUPtech
