A few sound samples recorded with my Marshall Shredmaster MK1 (serial number S04926).
That video is only meant to show the pedal works as expected.
Sound and video captured with the front cam of my iPhone 11 Pro. No further processing.
Signal path was as follows:
1) Guitar (Fender Custom Shop Telecaster Custom 59 NOS with bridge pickup)
2) '83 Marshall Master Lead Combo set clean.