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Relay G90 Buzzing


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I am having a loud buzzing noise appear when I use a Relay G90 wireless system with the GK Fusion 550 head. I have tried three different Relay G90 wireless systems along with different guitars and still getting buzzing. I have took everything out of the rack to eliminate ground loops and have the amp and wireless plugged into the same outlet. I have tried at different locations (Warehouse and other House) and still have the same result, BUZZ BUZZ BUZZ. I have changed cables out. When I plug directly into the input of the amp I get no buzz. I have tried all the wireless systems on my other rigs and they have no issues, no buzzing. Dose anybody have any ideas why this is happening?

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You could connect the G90 to another amp or just connect some headphones to the output to see if it is the G90 itself or some grounding issue when you connect to your setup.


You can also contact our customer service:


North America

Line 6, Inc.
26580 Agoura Road
Calabasas, CA 91302-1921

Main Phone#: (818) 575-3600
Main Fax#: (818) 575-3601

Customer Service:
8am - 5pm M-F Pacific Time
Press option 2 for Customer Service

Our busiest hours are from 11am to 2pm.
Technical support inquiries require product registration to an existing Line 6 account.


YAMAHA Music Europe GmbH
Siemensstrasse 22-34
25462 Rellingen

Telephone: +49 (0) 4101 303 0
Fax: +49 (0) 4101 303 333

Technical Support:
+49 (0) 4101 303 166 , Mon-Fri 9am – 5pm CET

Rest of World

Please contact a local distributor. To find a local distributor in your area, please visit our distributor page.

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