The Spirit Fuzz is a mix of the two first California versions of the plug-in fuzz used by Randy California from Spirit, Big Brother & The Holding Company or ZZ TOP among others, also maybe was used in the 'Spirit in the Sky' song. A handmade pedal-shaped version with less hiss and more low-end with modern fatures like filtered and protected 9V DC input and true bypass. Only two controls for Volume and Attack that goes from clean to buzzy fuzz with some fuzzy overdrive in-between, also it cleans well with the guitar's volume.
Official Product Video (EN)