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Te koop aangeboden een keurige set tad td 4001 "2 compressiedrivers met be diafragma's. Behoeven geen introductie voor de kenner, nog altijd de wereldtop onder compressiedrivers. 100Mm be

Our Thoughts RADAR AI

What are you actually getting for €3,500: a clean, working pair or a single driver with unknown history? For a TD-4001, €3,500 is squarely in fair-to-strong territory for the used market: recent asks have clustered around roughly €2,000-€3,500 per unit, with a pair often landing higher depending on originality and condition.

That’s why this is a worthwhile buy if it’s complete, genuine, and tests cleanly. The TD-4001 is prized for its speed, scale, and top-end refinement in serious horn systems, and scarcity tends to keep values firm. The upside is strongest if it’s original diaphragm, unmodified, and comes from a careful owner with proof of function. If condition is truly unknown, the key due diligence is diaphragm health, impedance, and whether it’s a single or a matched pair.

Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.

About TAD - Technical Audio Devices

TAD (Technical Audio Devices Laboratories, Inc.) traces its heritage to Pioneer Corporation, the Tokyo-based speaker manufacturer founded in 1937 by Nozomu Matsumoto. In 1975, Pioneer established the TAD Project as an advanced research division dedicated to professional-grade loudspeaker development. The first TAD compression driver, the TD-4001, debuted at the Acoustic Engineering Society convention in 1978 and quickly gained adoption across leading recording studios worldwide. By the early 2000s, TAD components had earned the confidence of professional sound engineers in over 300 studios across 20 countries. In 2007, TAD was formally spun off as an independent company, Technical Audio Devices Laboratories, Inc., to expand its reach into the high-end consumer audio market.

TAD specializes in both speaker systems and audio components, positioning itself as the only Japanese high-end manufacturer to excel in both categories. The company's product range includes reference-grade loudspeakers, integrated amplifiers, and digital audio components. Notable releases include the TAD-R1 reference speaker system (2007), the TAD-M600 integrated amplifier (2009), and the TAD-M4300 and TAD-2500 audio components (2010). This dual expertise reflects TAD's philosophy of designing complementary products that maximize sonic performance across the entire playback chain.

TAD occupies the premium high-end segment, commanding respect among discerning audiophiles and professional engineers alike. The brand's reputation rests on decades of professional audio credibility, rigorous engineering standards, and an uncompromising commitment to sonic accuracy. TAD's design philosophy centers on faithful music reproduction—preserving the artistic intent of recorded performances through advanced proprietary technologies and meticulous product development. This heritage and focus position TAD as a niche boutique manufacturer for serious listeners who prioritize sound quality above mass-market appeal.

See all TAD - Technical Audio Devices listings on RADAR.

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