Who is Who


Eelco Grimm

Creative director of Grimm Audio

Sound Engineer. Concept developer, system thinker and communicator. Lives for sound, music, and art in general. Lecturer and researcher at HKU University of the Arts Utrecht, Music and Technology. Internationally recognized expert in Loudness Normalization matters, contributing to EBU R128 for broadcast and AES td1004 for music streaming. Owner of the Fairytapes company for recording and acoustic consultancy. Former editor in chief of the leading Dutch professional audio magazine Pro-Audio Magazine. Married to his Brompton folding bike. Photographer and graphic designer in a parallel universe. Happy when sailing.

“The most musical technology freak I’ve ever met.”

Maarten van der Valk (Orchestra of the 18th Century)

Guido Tent

Technical director of Grimm Audio

Electrical Engineer. Responsible for development, supply chain and sales. Driven to create. Ran a career in analog electronics, RF and EMC (silicon and system design) at Philips. Former lecturer at Fontys University of Applied Science, Eindhoven. Runs Tentlabs in parallel. Music lover. Visits classical live performances regularly, but does not shun disco music from his tender years. Enjoys to cook, rides his Idworx bike as much as possible and likes to understand the nature of things. Tends to repair what seems beyond repair, just to intimidate apparatus.

“This is what you get when an engineer has ears.”

Brian Cherry (diyhifisupply)


Bryn Richards

Director of Sales and Marketing. Musician, composer, sound engineer and audio fanatic. Interested in many aspects of the audio world, from recording and production to hi-fi and home cinema. Bryn has held senior sales and marketing positions throughout his life in the audio world. After completing a masters’ degree in marketing and his many years in the industry Bryn brings a wealth of experience and enthusiasms to this role at Grimm Audio. 

Hans van Bommel

Production and logistics manager. Electrical Engineer. Started his career at SPS (Small Processor Systems) near Eindhoven. Joined Grimm Audio to enforce the production, testing and logistics team. Has always had a passion for music, which he currently enjoys as drummer in a punk rock band and volunteering at his local youth centre and at pop festivals.

Justin Vis

Project manager. Electrical and Software Engineer. Studied in Eindhoven at Fontys University of Applied Sciences and graduated at Tentlabs. Interested in high quality electronics, music and programming. Known for his unusual hobby projects in said context. Joined Grimm Audio to work on development.

Floris Schropp

Electrical Engineer. Born in Colorado, never lived without electronics from his childhood. Appreciates longevity in equipment, enforcing it if necessary. Combined with a special interest in audio due to the love of music, this results in a home brimmed with equipment. 

Michiel Schriever

Electrical and Software Engineer. Interested in the mechanics of (almost) all things and always looking for better solutions. After graduating in electrical engineering, Michiel was determined to start his own company for high quality musical instruments sound effects. Tasted the atmosphere at Grimm Audio during an internship and stayed around ever since, working on development and production testing. Considered to be a software fundamentalist.

Marco Schmidt

Mechanical and electrical engineer. Studied applied physics at Fontys Eindhoven. Started his career at the Philips Natlab working on soldering techniques and thermal management of laser diodes. Works at Grimm Audio on assembly, modifications and testing. Enjoys precise and accurate working. Owner of the “Schmidt-it” company, taking on diverse technical assignments. Has an insatiable urge to repair technical stuff of various kind, especially if it has wheels. Italian background, so his day starts with a strong coffee.

Simon Jaasma

Software Engineer. Enjoyed his graduation internship and happily accepted the offer to stay. Creates software that makes life easier, while secretly honing his electrical and audio engineering skills. Always eager to learn, preferring practical experimentation over research papers. Rarely spotted without a hoodie.

Peter van Willenswaard

Senior research scientist. Co-founder of Grimm Audio (partner from 2004-2010), now retired but unable to stop contributing. Owner of the aptly named company Audiomagic. Specialized in upgrades and design of digital audio and tube audio equipment. Former technical editor of Dutch professional audio magazine Pro-Audio Magazine. Long career as technical audio journalist (since 1979).