Product Engineers

Steve Grindrod is the guitar amplifier designer who has pioneered the master-volume models for Marshall with design work on the JCM800 and Silver Jubilee lines as well as the Marshall JCM900.  While working on his own amp line, Steve moved to China and partnered with IAG to establish Albion...
DW Fearn began working part time as an engineer for WPEN in Philadelphia while still in high school.  His passion for audio grew and developed as he collected equipment.  His goal was to create a recording studio with his gear, which he did in 1969 and he called it Veritable Recording Company. ...
Juha Ruokangas is a luthier from Finland who set out to create a community of builders within Europe thus establishing the European Guitar Builders Association (EGB).  Juha designed his own series of guitars in 1997, beginning with the Duke model, which was the first instrument of his own company,...
Marcello Vercelli was trained as a mechanical engineer and landed his first job in the music industry at RCF.  RCF is an Italian based professional loudspeaker manufacturer, and a big OEM supplier for transducers and other projects.  It was a wonderful introduction in the world of audio that he...
Roman Perschon was born in Austria and developed a passion for sound equipment and audio as a child.  While traveling around the world, Roman developed his idea of creating microphone products that could provide consistent sound quality in a variety of different environments.  He launched his own...
Rusty Brutsche and two friends formed the famous pro audio rental company Showco with the simple mission to produce good sounding concerts.  The goal required the building and maintenance of cutting edge and often innovative gear such as boards, pre-amps and lights.  Their Varilight system became a...
Michael Paul, known as MP, always had an interest in the visual arts, especially those that could involve multiple formats.  When he had the chance to create light and color programs for live musical acts in the 1960s, MP found his true passion!  He worked on countless shows including those for the...
Jim Gamble envisioned a console that would give an engineer ultimate control of the audio being mixed.  He started by working for one of the original sound reinforcement companies and helped write the book on the touring industry.  The experiences that he had working with some of the most revered ...
Bruce Clark was interviewed for the NAMM Oral History program during the 2015 Piano Technician Guild’s (PTG) annual convention in Denver, Colorado in July 2015.  During his interview he covered his passion for music and well as his long association with the piano industry.  Much of his design work...
Jim Coleman Jr. has proudly served as president of the Piano Technicians Guilds (PTG) Board as well as provided classes and training for its members.  He grew up in the industry and followed in his father’s footsteps, who also served the PTG over his long career.  In addition to tuning, Jim Jr....

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