This is an Electro-Harmonix Graphic Fuzz, which is no longer in production. I'm selling it because it didn't suit me, but it's practically complete, I think. There are no issues with its operation. It's more like a distortion than a fuzz. How about it if you're looking for one? The following is AI generated ⬇ This effector features variable envelope response, enabling diverse sound creation. - Brand: electro-harmonix - Model Name: Graphic Fuzz - Function: Variable Envelope Response - Controls: DIST, ENV, GRAPHIC, VOLUME, 250 Hz, 1 kHz, 100 Hz, 500 Hz, 2 kHz, 4 kHz - Included: Box, Instruction Manual, AC Adapter Thank you for looking.