How to get rid of the Hum ?

Note: This article has been updated with lastest available information on January 12th, 2021 at 06:03 pm

Some users have reported humming with their amp.

Here is what you can do to get rid of it:
1. Update your amp with the latest firmware.
You ‘ll find the complete procedure here below in attachments

2. Try to adjust the settings of the Noise Gate pedal in the Spark app:

3. If above steps haven’t changed anything, you may have a grounding issue. The power supply provided with the amp is not grounded. In this case, contact Positive Grid Support for a replacement power supply.

You can also find some spare power supplies on the Internet.
Some users have reported using laptop grounded power supplies or having plugged their amp to a computer with USB to get rid of the hum.

If you’re interested to know more about Noise gates, i also suggest you to look at these resources :

The 23 Best Guitar Pedals – Your ‘Must Have’ List

EDIT (2020-12-18) : Some member have reported receiving grounded power supply with their amp. it looks like PG is now including them by default. If you still receive a 2 prong plug and have hum, please get in touch with PG (see procedure above)

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  1. Graeme Ireson

    This is an expensive piece of equipment that has a significant manufacturing fault; not grounded properly, that the manufacturing company have taken no responsibility for

    I own a number of amps, including Bluetooth apps, none of which have this problem

    Rather than accept their responsibility and sort the problem out they told me how I could fix it by buying more stuff i.e. blaming the end user

    Not good enough Positive Grid, what would have been a wonderful addition to my collection has a fatal flaw that you refuse to admit to because of the potential consequences; shame on you for putting profit before quality

    1. As far as I know, every body who asked for a grounded power supply to PG support have received one. Spark is now being sold with a ground power supply and this has been like that for more than a year now

  2. Bob Watters

    My hum issue was caused by a dimmer on the same circuit as my Spark that came with the new grounded power supply. Make sure you don’t have noise in your electric circuit you are plugged in to!

  3. Nick Johnston

    They didn’t supply a grounded PSU to me, they ignored every email I sent.

  4. M S

    I’m pretty sure some of the hum complaints are from an effect being on. I can’t remember which one it is or maybe its a combination of effects but I have experienced a serious humming noise when I had these 2 effects on at the same time.

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