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= Diamond Guitar Pedals = Diamond Guitar Pedals is a Canadian brand of effect pedals for electric guitars, bass guitars, and keyboards. The Diamond line of products is developed and manufactured by Polyblend Systems, a Halifax-area company founded by Michael Knappe and Dr. Manohar Bance in 2002.

History
After six years at Cisco Systems in Silicon Valley pioneering voice over IP technologies and products, signal processing engineer Michael Knappe returned to Halifax in 2002 to begin a PhD program in Biomedical Engineering. In late 2002, Knappe and Dr. Manohar Bance founded Polyblend Systems with a mission to build audio technologies and products, with its first goal to build a professional portable audiometer utilizing the 3Com PalmPilot. In 2003, Knappe met local musician and electronic technician Tim Fifield, and discovered they had a mutual interest in studio sound processing and guitar effects.

Knappe and Fifield began meeting every Monday evening to build an overdrive effect pedal as a hobby, with Fifield then officially joining Polyblend to work on the portable audiometer. Work continued on the overdrive pedal on the side, resulting in a design that they believed could be made into a commercial product. It was at this point that the Diamond brand of premium guitar effects was officially launched, with the Diamond Drive first shipping to the local Halifax Musicstop chain in June 2004. Efforts for new pedal designs accelerated into 2005, launching two of its most enduring product designs: the yellow Diamond Compressor and world's first tap-tempo analog delay, the Diamond Memory Lane. Around the same time it was decided to cease development effort on the audiometer, with Polyblend / Diamond now solely focused on music electronics and guitar effect pedals.

Sales have built largely through word of mouth, with Diamond Pedals now sold worldwide and used by many top musicians.

Notable Artists

 * Andy Summers of The Police
 * The Edge from U2
 * Ed O’Brien from Radiohead
 * Norah Jones
 * Joe Perry and Brad Whitford of Aerosmith
 * Mike McCready of Pearl Jam
 * Steven Wilson of Porcupine Tree
 * Kevin Parker of Tame Impala.

Notable Products

 * J-Drive family of overdrives
 * Compressor family of guitar and bass compressors
 * Memory Lane family of tap-tempo delays
 * Tremolo
 * Vibrato