GUP Tech releases new design of GrindR EQ - Boost

September 1, 2025 · 1 sources

GUP Tech released a new design of its GrindR EQ - Boost pedal in September 2025, the maker states on the product page. The listing reads: "2025-09 : New design, same boosting power, with new boxes."¹

The pedal is a boost and EQ unit built around a bypassable preamp. The maker describes it as "20db of clean boost, with a bypassable (left switch) preamp (bass and treble control)." A right toggle selects between the original "Grind" EQ and the "33" EQ. In the "P" (Preamp) position, the Bass and Treble controls become active; in "B" (Bypass) mode, only Level and the EQ type control remain in use. GUP Tech calls it "a three in one, including the old school popular Integrated Preamp, switchable with the left toggle."¹

The maker warns that the pedal runs on 9Vdc only and that "Anything over 9V will blow the pedal."¹ The GrindR EQ - Boost is listed as in stock in Black Red and Black color options, and GUP Tech states that all of its pedals are made by the company in Saguenay, Québec, Canada.¹ 00 GBP.¹

The pedal sits among the maker's equalization pedals. Customer reviews on the page describe the unit in varied terms: one reviewer writes that the two EQ modes add "a noticeable spike in the upper mids and shave off some low end," while another reports "some trouble dialing it in with my setup."¹