MXR Classic 108 Fuzz Minichat_bubble_outlineFrom real comments

The built-in buffer is the pedal's defining feature for wah and clean-up use. Multiple commenters highlight that the buffer prevents the oscillating 'WRYYYYYYYYYY' sound that happens when running fuzz in front of a wah without one. It also enables smooth guitar volume knob clean-up, with one user specifically praising a demo showing both the clean-up and wah-pairing use. Questions remain among commenters about whether the buffer works if the pedal is placed before rather than after the wah.

The buffer noticeably reshapes the fuzz's tonal character compared to unbuffered versions. A user who owns the big-box version reports that the buffer strips away much of the classic fuzzy character, making it sound closer to an overdrive or distortion pedal, which they note can be a positive depending on goals. They also mention the tone can come across too bright, even when using humbuckers, requiring adjustment of the guitar's tone control to dial it in properly.

Output and pickup pairing require some tweaking, especially with humbuckers. One commenter advises rolling back the output control when using humbucker pickups, since their hotter output can push the amp into breakup too quickly at higher settings. Another fan describes a favorite setting of fuzz near minimum with level near maximum and buffer engaged, producing a gritty, touch-sensitive boost rather than full-on fuzz saturation.