Son of Ben (Benson Preamp) Noise Issue

Cramern

New member
I just finished up my first build this weekend - a Son of Ben. Everything works as expected, but I'm running into some issues with noise. Essentially, if the gain knob is anywhere past 8 o'clock, the hum from my pickups is amplified to a very noticeable extent. This doesn't happen when the pedal is bypassed, or when the gain knob is lower than 8 o'clock. This may be totally normal for the pedal, but I'm new to preamp pedals in general so I'm really unsure.

Other relevant info: Using an isolated power supply, and I have checked the patch cables to ensure they aren't faulty.

Any help is greatly appreciated! Please let me know if any more photos are needed to help troubleshoot.
 

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