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

I have a bunch of analog pedals, some with charge pumps, and one digital delay, which is a BOSS DD-500. Having the DD-500 daisy chained introduced plenty of digital whine noise. This device, connected just to the DD-500 got rid of the noise in a jiffy, making the need for an expensive power supply like Cioks or Voodoo Labs moot.If I add more digital pedals to a pedal board for live performances or something, I might use more of these or an expensive unit... But just for one digital pedal or in the studio where I'm hooking things up and shifting them around daily, this does the job perfectly and I'll stick to regular wall warts with daisy chains and these on digital pedals.Basically, at home and in the studio, I don't use pedal boards per-se... I just get like a black, $5 food tray and put my pedals on that. No velcro etc. Easily rearranged, keeps things relatively tidy, and I can move the tray from place to place NP.I may buy a second one for that occasional need.Going forward, I vote for manufacturers of digital pedals to ALL include power filtering in their problematic pedals so that we don't need these big, dumb power supplies. Add some non-sacrificial fuses or something too.

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!

Having emi interference and just thought why not? I can say it definitely does do something and it does theoretically work and makes a difference. But! For my whole problem it wasnt a miracle worker to solve what I needed. It silenced a noticable amount, but not all.It definitely does work. It depends on what problem your dealing with.

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.

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.

I recently obtained a new mini guitar pedal, an Effects Bakery Japanese Butter Roll Vibe. I was all excited to try it out, but when I hooked it up (either as part of my pedalboard or even by itself) it produced a horrible, high-pitched whine that was just intolerable. Needless to say, I was disappointed, and I thought I might have to return the pedal - but, while Googling around to look into possible causes and solutions, I came across this Joyo noise-blocker device. I saw some references to it helping others who had had similar problems, so I decided to give it a shot. I'm so glad I did - the pedal now performs PERFECTLY and without any extraneous noise or "whining" of any kind. An A+ product for me.

This item it a rare failure from Joyo. It didn't get rid of hum it might have even added volume to it. Do not buy, a total let down.