The GUP Tech Cool Gate is a compact noise gate from GUP Tech, the Canadian builder of the SUN and GUUL gates. It is a deliberately simple pedal: one knob sets the gating threshold, and nothing else gets in the way. GUP Tech calls it "A one-knob simple noise gate."1
How the knob works
The single knob sets how hard the gate clamps down. Full clockwise is the lower threshold, and counterclockwise is max gating, so turning the knob back toward counterclockwise gates more aggressively. GUP Tech describes the pedal plainly as "Couterclockwise is max gating."1 There are no other controls, no blend, no release, no loop: the whole design is threshold in, silence out.
Cool Gate versus the SUN Noise Gate
The Cool Gate is the entry point in GUP Tech's gate line. The maker is direct about where it sits: "This ain't a SUN since it's a 2-wire noise gate," and points players onward: "For more performance, have a look at our 4-wire SUN Noise Gate."1
| Cool Gate | SUN Noise Gate | |
|---|---|---|
| Wiring | 2-wire | 4-wire, with 4 jacks for 2, 3 or 4-wire setups21 |
| Controls | One threshold knob1 | Single threshold knob2 |
| Positioning | Simple gate1 | More performance, per GUP Tech1 |
| Colors | Black, Pink, Blue1 | White, Dark Gray, Black Yellow, Black Green, Black Blue, Black Orange2 |
The practical differences between the two pedals come down to what each maker publishes about them. The Cool Gate is listed at a sale price of £66.00 GBP1. GUP Tech also builds other pedals alongside the SUN, such as the GUUL, which players can compare against the SUN on its own page3.
The Cool Gate is listed as sold out on GUP Tech's product page as of 26 October 2026. The Lab Series #10 Cool Gate, a related run the maker describes as "a simple noise gate" and points back to the production model, is also sold out.14
Lab Series #10
Before the production Cool Gate there was the Lab Series #10 Cool Gate, a prototype-run version with the same one-knob idea. Its knob is labeled reverse sensitivity, and GUP Tech's page carries a frank disclaimer: "This ain't a GUUL. It's way less performant than its big brother Guul."4 The Lab Series unit is also sold out.4
Price and availability
GUP Tech listed the Cool Gate at £66.00 GBP on its product page as of 26 October 2026.1 The pedal is sold out at that listing.1 For players comparing gates across the wider market, the site's noise gate pages cover alternatives from the Boss NS-2 Noise Suppressor to the Fortin Amps Fortin Zuul.
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Questions
What power supply does the GUP Tech Cool Gate use?
The Cool Gate runs on 9Vdc center negative power, the standard supply used by most compact pedals. GUP Tech lists this on the product page, so a regular 9V center negative adapter or a pedalboard power supply output will run it. It draws only 4mA, so it places a very light load on a shared supply.
How much current does the GUP Tech Cool Gate draw?
GUP Tech lists power consumption at 4mA. That is a small draw by pedal standards, so the Cool Gate can share a daisy chain or a low-output power supply branch without trouble, alongside other low-draw pedals.
What is the difference between the Cool Gate and the SUN Noise Gate?
The Cool Gate is a two-wire noise gate with one knob, while the SUN Noise Gate is a four-wire design that GUP Tech describes as offering more performance. The SUN includes four jacks so it can be wired into a rig in a 2, 3 or 4-wire method. GUP Tech points players who want more performance to the SUN.
What colors does the GUP Tech Cool Gate come in?
GUP Tech offers the Cool Gate in Black, Pink and Blue enclosure colors. The related SUN Noise Gate comes in a wider range, including White, Dark Gray, Black Yellow, Black Green, Black Blue and Black Orange.
Is the GUP Tech Cool Gate still available?
As of 26 October 2026, the Cool Gate is listed as sold out on GUP Tech's product page, and the Lab Series #10 Cool Gate is also sold out. GUP Tech is a small-batch builder, so its gates appear and sell out in runs.
Sources (4)
- Cool Gate (Noise Gate), GUP Tech (guptech.ca)
- SUN Noise Gate Guitar Pedal, GUP Tech (guptech.ca)
- Legacy - GUUL Noise Gate, GUP Tech (guptech.ca), 2021-07
- Lab Series #10, GUP Tech (guptech.ca)
