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Matched pair 6l6gcm-str redbase tad premium selected. Buis type; 6l6/5881 niet gebruikt, dus nieuw! Passen, helaas toch niet in mijn versterker.
At €60, this is a strong bargain against the used market anchor: it sits far below the €4,536 25th percentile and miles under the €7,367 median, so the asking price looks exceptionally friendly. For a buyer, that usually means low risk on value and plenty of upside if the tubes test well.
The appeal here is straightforward: these Redbase-selected 6L6GCs are well regarded for solid bass, clear highs, good headroom, and strong dynamics, so they’re a sensible choice for anyone wanting a reliable, high-quality power tube upgrade. At this price, the main thing to verify is simple fit-and-finish rather than value—confirm matching, low hours, and that the tube is genuinely functioning cleanly, because even a premium tube is only a great buy if it measures and sounds as advertised.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
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.
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