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PostPosted: Wed Sep 29, 2021 6:17 pm 
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Just finished my build of the jewel and seems to be a high pitch hiss when the pedal is activated. Its not terrible but noticeable.
Seems louder when boost is after the drive which makes me believe its in the drive ckt. but when i turn drive off and keep boost on its still there. would this be a power or ground issue? i use gig rig power supplies and always have isolated clean power. Im sure its something i did when i put it together. any help would be great


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PostPosted: Wed Sep 29, 2021 6:33 pm 
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Location: Albany, NY
Is there any difference in this hiss between the 9V & 18V settings?

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PostPosted: Thu Oct 07, 2021 2:31 pm 
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no difference. its just such a high pitched frequency that its barely heard but definately there. ive tried turning down the treble and prescence but its there still. got me stumped. almost like the sound when certain electronics kick on like a tv. but ears dont adjust to it. just annoying really


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PostPosted: Thu Oct 07, 2021 4:09 pm 
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What exactly is printed on the charge pump IC?

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PostPosted: Thu Oct 07, 2021 5:52 pm 
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Are you using any digital effects in your signal chain or a digital modeling amp, or plugging straight into a computer?

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PostPosted: Mon Oct 18, 2021 6:31 pm 
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charge pump says 09Lvfd then under that LT1054cp.

and i have a tried the pedal on a spare power supply with no other pedals in a chain. just guitar to pedal to amp. still high pitched hiss


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PostPosted: Mon Oct 18, 2021 6:45 pm 
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i use tube amplifiers no digital modeling


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PostPosted: Tue Oct 19, 2021 9:07 am 
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Does removing the boost module make any difference?

Please provide pics.

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