JOYOZGP Guitar Pedal Power Noise Blocker Support DC 9V Max 800mA Output and Power Supply Isolation (JP-06)

This little device has successfully cured a niggling noise which my guitar pedalboard power supply unit was emitting. Nicely built and compact and has a useful light on top to show it’s working.

Not sure why the reviews on this are as poor as they are (maybe I'll find out over time!) but this does exactly what it says on the tin. I had a battery powered pre-amp that I added a 9V power input to, but it has an annoying, audible hum when sharing the same power supply as my effects pedal. I confirmed this was the issue first by using two separate power supplies. Using a single supply and isolating the pre-amp with this device completely fixed the issue. It's a bit plasticky, but smaller than it looks so easy to keep out of the way. I couldn't find anything else quite like it, so I guess the value for money is good if you need it. Added about 30mA to the power draw of my setup.

The electrical noise in my flat is so bad that this doesn’t make much of a difference to the hum in guitar pedals. Instead, a much more expensive isolated power supply by Cioks makes all the pedals sound quiet and wonderful.So - the JOYO ZGP might work for your noise problems, or might not, depending on how bad the problems are. The product seems fine but it didn’t work for my application.

I only have a few pedals: compressor, boost, and cab sim, great sound, and I would like to use them for recording, but there was always an annoying hum, so I went ahead and bought one of these, and low and behold, silence. I plugged in my strat, which seemed to be the worst of all, and it was dead silent.I am so very happy I discovered this little gem.

I think there is a tiny difference in noise levels but not worth the £12.Better to spend your money on a quality PSU

I have a very cheap octave pedal that hums when it shares a power supply with my other pedals. I need to isolate the power supply from that one pedal, but my options weren't great: buy an expensive power supply with isolated outputs, tape a battery to my pedal board, maybe add a wall wart. This is the prefect solution: it's compact, it's cheap, and it works.This isolates the DC power supply for a single 150 mA pedal on my board, eliminating hum caused by that pedal.

Tengo varios pedales, solo uno hace ruido, un Delay Jojo D-Seed-II. Compré el "JOYO ZGP - Bloqueador de ruido de potencia" justo para este pedal, puesto que los demás no lo necesitan. Lo puse exactamente como debe ir: mientras el pedal está desactivado la señal pasa sin problema (true bypass), al accionarlo encienden las luces que indican que el pedal está activo, pero no pasa la señal, silencia todo. Al quitarlo del pedal todo vuelve a la normalidad. Con otros pedales no ocurre lo mismo, los deja funcionar como deben, aunque no sé que tanto bloquea el ruido de potencia debido a que los otros pedales no generan ruido. El vendedor amablemente se contactó conmigo e intentamos resolver este misterio sin éxito. Agradezco su disposición y tiempo. El mundo de los pedales es muy amplio e involucra temas de electricidad que escapan a quién no tiene la formación en este campo. Esto le servirá a algunos, a otros no. Lo mejor es revisar el circuito de la cadena de pedales, el acondicionador de corriente y la tierra física del lugar en el que se conecta el equipo, antes de comprar artilugios que no sabes cómo funcionan, ni sabes si realmente los necesitas. Conservaré el JOYO ZGP con la intención de que esto me obligue a aprender más sobre estas cuestiones.

I got this for a noisy pedal and it worked, taking out almost all the noise, and I was happy with it until today, when it just cut out. After it stopped working, if I unplug it and then replug it, it will work again for a few seconds and then it loses power and the LED goes off. Frustrating that it is not returnable. I guess it is poorly made so I recommend buying something that is higher quality.

Felt compelled to write a review since I’ve seen so many negative on here. This thing is awesome! Purchased a Walrus Audio Canvas Tuner recently, plugged it in and there was a nasty hum in my signal chain. Come to find out that the pedal needs ISOLATED power. (I currently run a tourtek rechargeable powered pedalboard, plenty of power but no isolated dc outputs.)Enter the ZGP! Plugged it in, mounted under my pedalboard with a small Velcro strip and done! Pedal is quiet now with no hum or interference noise. Purchased a second unit to have on hand as back-up!

I'm using this with a Joyo Power Supply 5 to power a Zoom G3Xn. It filters out the high-frequency whine introduced by the Joyo power supply (which is annoying in the first place.) But, now, if you leave the power for the Zoom effects unit turned on, it will not power up when you turn on the Joyo power supply. You have to turn the Zoom effects unit off and back on in order for it to start. This isn't a problem when running without the ZGP Noise Blocker.