4:32 getting ready to play some sound samples. Did you reset the pedal sensitivity/calibration (manual page 31)? In manual Boss recommends to set Drive knob about 10 O´clock when using guitar with humbuckers and 12 O´clock with single coils like for a moment starting 9:56 (bad sound). I would enjoy hearing some different DRIVE type settings (manual page 27). a) Set the TYPE setting to ADVANCED and hold down the MANUAL/MEMORY button while turning the pedal on. b) Then select different DRIVE / DISTORTION pedals from TYPE knob. Set the noise suppressor level with WAH RANGE knob. Press MANUAL/MEMORY. c) Set the volume level from DRIVE knob. Press MANUAL/MEMORY