Katt1 Posted Sunday at 05:28 PM Share Posted Sunday at 05:28 PM I have tried with muliple guitars, but i still get that high pitch sound that sounds like it goes in waves. I have tried with a physical cab and an amp and i don't get that sound when i do that. So it's something to do with the Helix. It's honestly not playable for me. I have tried resetting the Helix, but that didn't work. I have tried different cables. The ground loop button on the helix doesn't remove the sound either rapidsave.com_why_do_i_get_this_high_pitched_background_noise-t38ukoeumu2g1.mp4 Quote Link to comment Share on other sites More sharing options...
silverhead Posted Sunday at 05:55 PM Share Posted Sunday at 05:55 PM Is your Helix connected to your computer via USB when this is happening? If so try disconnecting it. If the problem is USB related, try turning down your computer volume. Quote Link to comment Share on other sites More sharing options...
Katt1 Posted Sunday at 05:57 PM Author Share Posted Sunday at 05:57 PM On 11/23/2025 at 6:55 PM, silverhead said: Is your Helix connected to your computer via USB when this is happening? If so try disconnecting it. No. Just one jack cable, headphones and power is plugged into the Helix Quote Link to comment Share on other sites More sharing options...
Schmalle Posted yesterday at 08:35 AM Share Posted yesterday at 08:35 AM Which Helix is it? Floor, LT, Stomp? Quote Link to comment Share on other sites More sharing options...
Katt1 Posted yesterday at 10:26 AM Author Share Posted yesterday at 10:26 AM On 11/24/2025 at 9:35 AM, Schmalle said: Which Helix is it? Floor, LT, Stomp? Helix Floor Quote Link to comment Share on other sites More sharing options...
Schmalle Posted yesterday at 01:01 PM Share Posted yesterday at 01:01 PM On 11/24/2025 at 11:26 AM, Katt1 said: Helix Floor Ok. Usually this kind of noise can be picked up if there is either no ground connection or more than one (ground loop). We can exclude a ground loop based on your description. The fact that it goes away if the Helix is plugged into a (grounded) amp points to a missing ground connection. Helix is grounded by the power cable which might be defective - so try a different power cable. It could also be an ungrounded power outlet. So try it in a different room. 2 Quote Link to comment Share on other sites More sharing options...
Katt1 Posted yesterday at 01:44 PM Author Share Posted yesterday at 01:44 PM On 11/24/2025 at 2:01 PM, Schmalle said: Ok. Usually this kind of noise can be picked up if there is either no ground connection or more than one (ground loop). We can exclude a ground loop based on your description. The fact that it goes away if the Helix is plugged into a (grounded) amp points to a missing ground connection. Helix is grounded by the power cable which might be defective - so try a different power cable. It could also be an ungrounded power outlet. So try it in a different room. I think you misunderstood the amp thing. If i use a physical cab and a real amp i'm not getting that sound (no helix connected). I have also tested connecting Helix to a physical cab and i still get that high pitch noise as well. So it is the Helix unit itself that is making the noise. I will order a new power cable and test if that's the issue though Quote Link to comment Share on other sites More sharing options...
silverhead Posted yesterday at 01:49 PM Share Posted yesterday at 01:49 PM On 11/24/2025 at 8:44 AM, Katt1 said: …. I will order a new power cable and test if that's the issue though I think any standard power cable will do as a test. Shut down your computer and connect its power cable to Helix. Test with different rooms/power outlets in your house. Use headphones? 1 Quote Link to comment Share on other sites More sharing options...
Schmalle Posted yesterday at 02:19 PM Share Posted yesterday at 02:19 PM On 11/24/2025 at 2:44 PM, Katt1 said: I think you misunderstood the amp thing. If i use a physical cab and a real amp i'm not getting that sound (no helix connected). I have also tested connecting Helix to a physical cab and i still get that high pitch noise as well. So it is the Helix unit itself that is making the noise. I will order a new power cable and test if that's the issue though Well, I read your OP differently. That lowers the probability of it being a no-ground issue. Does your Helix produce this sound without a guitar connected? Or do you have to connect a guitar and open up the guitar's volume for it to occur? - if so - does it change in intensity with the guitar's position in the room? The noise source might be a noise emitting device in the room. So does this occur in a different room? Quote Link to comment Share on other sites More sharing options...
Katt1 Posted yesterday at 02:25 PM Author Share Posted yesterday at 02:25 PM On 11/24/2025 at 3:19 PM, Schmalle said: Well, I read your OP differently. That lowers the probability of it being a no-ground issue. Does your Helix produce this sound without a guitar connected? Or do you have to connect a guitar and open up the guitar's volume for it to occur? - if so - does it change in intensity with the guitar's position in the room? The noise source might be a noise emitting device in the room. So does this occur in a different room? Yes the sound is slightly louder when it's not connected to the guitar. Anyway i have tested with different power cable and it's the same issue. No matter where i face the guitar it's still making the noise. It's so weird i have never had this issue before until now. Same house, nothing changed. Maybe after owning it for over a decade now it has had enough Quote Link to comment Share on other sites More sharing options...
Schmalle Posted yesterday at 03:18 PM Share Posted yesterday at 03:18 PM On 11/24/2025 at 3:25 PM, Katt1 said: Yes the sound is slightly louder when it's not connected to the guitar. Anyway i have tested with different power cable and it's the same issue. No matter where i face the guitar it's still making the noise. It's so weird i have never had this issue before until now. Same house, nothing changed If it is not an external noise source: Maybe the internal power supply started to whine? Could be a bad capacitor or a coil/transformer vibration. Contact support! It would be nice if you report back and tell us the cause for future users. Quote Link to comment Share on other sites More sharing options...
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