How It All Began
Body Teunissen with his first Sony reel to reel recorder at 10 years old
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Welcome to Vintage Audio Professor, where my lifelong passion for vintage audio comes to life. My journey began at just 10 years old when I bought my first piece of vintage audio equipment. What started as youthful curiosity quickly became an obsession – I was captivated by the craftsmanship, the sound, and the stories these machines could tell.
Since that first purchase decades ago, I’ve never stopped learning. Every piece of equipment teaches me something new, whether it’s a restoration technique, an engineering innovation, or simply a deeper appreciation for the golden age of audio design. This continuous learning journey has shaped everything I do at Vintage Audio Professor.
Professional Development
My breakthrough came at Catawiki, where I worked for two years as an Audio Expert and Auctioneer. In this role, I evaluated and sold hundreds of vintage audio devices, from rare Marantz receivers to classic McIntosh amplifiers. This experience gave me a unique insight into market values and trends.
At Catawiki, I developed my skills in data analysis with Google Analytics and learned the intricacies of accurate valuation. I worked with international clients and built a reputation as a reliable and knowledgeable audio specialist.
Why Vintage Audio Professor?
After years in the commercial vintage audio world, I decided to take a step further. I saw a great need for independent, professional valuations for heirlooms, insurance and personal collections. Many people inherit vintage audio equipment but don’t know what they have on their hands.
As Vintage Audio Professor, I combine my technical knowledge with my international market experience. I help families, collectors and businesses discover the true value of their vintage audio treasures – without the pressure to sell.
My Unique Approach
What sets me apart is my holistic approach. I look not only at brands and models, but also at condition, originality, rarity and market trends. My experience with international auctions gives me real-time insight into what collectors are actually willing to pay.
I also understand the emotional value of audio equipment. For many people, these devices are not just technical objects, but memories of loved ones or symbols of a particular time. I treat each evaluation with the respect and care it deserves.
My Specializations
amplifier & receivers
Tube to Transistor Expertise
Marantz, McIntosh, Pioneer, Sansui, Yamaha – from tube to transistor, pre-amp to poweramp. Expert valuation of integrated amplifiers, receivers, and high-end separates.
Turntables & Analog
DJ to Audiophile Systems
Marantz, McIntosh, Pioneer, Sansui, Yamaha – from tube to transistor, pre-amp to poweramp. Expert valuation of integrated amplifiers, receivers, and high-end separates.
Digital Source Players
Tube to Transistor Expertise
CD players, DAT recorders, MiniDisc players – all early digital formats and high-end models. Specialized knowledge of rare digital audio equipment.
Tape & Recording
Studio & Consumer Equipment
Nakamichi, TEAC, Akai – cassette decks, reel-to-reel recorders and professional studio equipment. Expert in tape format authentication and condition assessment.
Tuners & Signal Processing
Enhanced Sound Components
FM/AM tuners, EQs, crossovers, signal processors – components for enhanced sound quality. Specialized evaluation of rare tuning and processing equipment.
Loudspeakers & Headphones
Studio Monitors & Vintage Audio
KEF, B&W, JBL, Altec Lansing, AKG – speakers, monitors and vintage headphones. Complete acoustic system evaluation and driver authentication.
Complete Systems
Full Installation Appraisals
Complete vintage audio installations, including cabling, furniture, complete sets. Comprehensive system evaluation for estate and insurance purposes.
Rare & limited editions
Collector's Treasures
Prototypes, limited editions, Japanese exclusives and other in demand vintage audio gems. Expert authentication of the rarest and most valuable pieces.
All Evaluation Purposes
Professional Documentation
Insurance, probate, legal proceedings, estate divorces and personal documentation. Comprehensive appraisal services for all official requirements.
Ontdek waarom vintage audio uit de jaren 1970-2000 een superieure geluidskwaliteit, duurzaamheid en waarde op lange termijn biedt in vergelijking met moderne consumentenelektronica.”
Ontdek waarom vintage audio uit de jaren 1970-2000 een superieure geluidskwaliteit, duurzaamheid en waarde op lange termijn biedt in vergelijking met moderne consumentenelektronica.”
Ontdek waarom vintage audio uit de jaren 1970-2000 een superieure geluidskwaliteit, duurzaamheid en waarde op lange termijn biedt in vergelijking met moderne consumentenelektronica.”




