The British Pedal Company Shatterbox from the Vintage Series is a detailed replica to the original John Hornby Skewes Shatterbox produced in Leeds, England around 1968/1969. The unit combines two classic effects: The Silicon-based Zonk II fuzz circuit and the Hornby Skewes Treble Boost circuit. The fuzz section provides as smooth, stable fuzz with a brighter tone than the original Zonk Machine MKI. The original unit was produced in exceptionally limited numbers and was famously used by Mark Bolan from T. Rex.