I received my profiler yesterday, I did a quick test with O.S version 7.1.4 installed by default with default profiles and everything seemed fine (from what I recall).
I then took the time to update the OS to the latest public Beta and add a few profiles freshly downloaded. When I plugged my guitar I experienced a sort of feedback sound through my headphones. Since the OS did not seem really stable (Profiler froze several times) I thought it was due to the OS so I reverted back to the latest public (7.5) but same thing occurs.
I continued the investigation and tried all those things :
- Change Power strip
- Use power socket directly and change power socket in the same room
- Use power socket from an other room
- Turn all the lights off
- Apply Factory Reset on the Profiler
- Try different Jacks
- Try different guitars single coils and humbuckers
- Try different headphones (Closed headphones only)
- Play the guitar outside of the room with a long jack and headphone cable extension
Nothing really worked, but here are my findings :
- Headphones are closed so there is no way the signal goes from the headphone to the pickups
- It occurs with clean and crunch sounds -> Of course the more gain, the more noise in addition to the feedback noise
- Feedback stops when I mute the strings with my hand or turn the volume to zero on the guitar, however it doesn't really decrease when I turn down the volume
- Strangely enough, it seems that Single coils introduces less feedback than humbuckers (I tested with my Telecaster, SG and LesPaul)
- Feedback occurs when the jack is connected to the profiler but not to the guitar (without touching it)
Good thing is that I managed to mostly ged rid of it with the input noise gate:
- I have to set it to almost 7 for humbuckers with profile which have gain set to noon or more and 5 for clean profiles.
- 6 to 6.5 for Single coils seem to work well for saturated profiles and 4 for clean.
- Unfortunately it seems that it affects the tone (probably negligible but still) and sustain
Is it normal ?
Am I the only one experiencing this (I searched a bit but did not find real answers) ?
Is my unit faulty ?
Is it a problem with the headphone input (Unfortunately I don't have monitors yet and my unit is non powered, so I cannot test anything else)?
Are there any setting I am missing ?
Do you all use the noise gate input ? If yes to which extent (because the value i have to apply seem pretty high)?
I can leave with the noise gate trick however since it is brand new and it's not cheap I would rather make it repair or exchange it while I can. Especially since I plan to use it a lot with headphones
Thanks in advance !