The GUPtech WNR is a chorus and slapback delay pedal for guitar and bass from the Canadian builder GUPtech. It puts both effects in one enclosure: a chorus section with four knobs, and a short slapback delay with two of its own. GUPtech describes the overall result as "a versatile classic chorus that can go to completely crazy ambient 'bottom of the sea' effects"1. It belongs to the wider family of chorus pedals, and its delay side is a delay pedal function in the short, single-repeat slapback style.
Controls
The pedal splits its controls between the two effects. GUPtech states that the chorus is controlled via the "rate", "int", "shape" and "Overlap" knobs, while slapback delay is controlled with the "delay" and "depth" knobs1.
| Control | Section | What it does |
|---|---|---|
| Rate | Chorus | Controls chorus rate1 |
| Int | Chorus | One of the four chorus controls2 |
| Shape | Chorus | Controls chorus shape1 |
| Overlap | Chorus | One of the four chorus controls2 |
| Delay | Slapback delay | Controls delay time1 |
| Depth | Slapback delay | One of the two delay controls1 |
Power and technical details
The WNR needs 9Vdc, center negative only, and draws 32mA1. GUPtech also quotes a headroom figure of 4.31dBu (3.6Vpp) at 1kHz, which describes how hot a signal the circuit accepts before it clips1.
The maker specifies 9Vdc center negative only. A supply that does not match that arrangement is not suitable for this pedal.
Versions and availability
The standard WNR has been offered in Magenta and Sky Blue color options1. A limited variant, the GUP Tech WNR Douche Edition, appeared on 2022-10-29: GUPtech described it as "the Golden WNR, douche edition, sparkling look, same chorus-able features," meaning the same chorus and delay circuitry in a golden sparkling finish2.
As of the maker's product page, the WNR is listed as sold out1. The page shows 5 reviews with a 100% positive rating1.
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Questions
What power supply does the GUPtech WNR need?
The WNR runs on a 9Vdc, center negative power supply, and the maker states that this is the only acceptable arrangement. As with most modern pedals, use an isolated 9V supply rather than a daisy chain or an unregulated adapter, and never feed it a higher voltage or an AC supply.
Can the GUPtech WNR be used with bass?
Yes. GUPtech describes the WNR as a chorus-delay effect for guitar and bass, so it is intended to sit on either kind of board. The maker also quotes a headroom figure of 4.31dBu (3.6Vpp) at 1kHz, which is the level the circuit can handle before clipping.
How much current does the GUPtech WNR draw?
GUPtech lists power consumption at 32mA. That is modest by modern standards, so nearly any standard 9V pedalboard supply with spare capacity can run it.
What colors does the GUPtech WNR come in?
The standard WNR has been offered in Magenta and Sky Blue color options. A limited Golden version, the WNR Douche Edition, was also released with a sparkling look and the same feature set.
What does the Shape knob do on the WNR?
The Shape knob is one of four controls over the chorus side of the pedal, alongside Rate, Int and Overlap. GUPtech says the chorus is controlled via those four knobs, with Shape contributing to the chorus shape.
Sources (2)
- GUPtech WNR, guptech.ca
- WNR - Douche Edition, GUP Tech, 2022-10-29







