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Rör 1 har kod TK R9D. Rör 2 har kod VF3 B0EJ Provspelade låter bra! mullard ecc81 kod tk r9d Koden TK R9D på ditt Mullard ECC81-rör avslöjar att det är ett extremt tidigt och eftertraktat samlarobjekt. Det är tillverkat av Mullard i Mitcham, Storbritannien, under den fjärde veckan i april 1959. Innan Philips-koncernen bytte till typkoden "VF" för ECC81, använde de koden TK under hela 1950-talet. Detta rör har med stor sannolikhet den ikoniska, fyrkantiga getter-ringen ("square getter
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Captain Stanley R. Mullard founded the Mullard Radio Valve Company in 1920 in the United Kingdom, initially to produce high-power transmitting valves for the British Admiralty. Drawing from his engineering background and passion for music, he expanded into audio components, creating vacuum tubes renowned for their reliability and superior sound quality. Acquired by Philips in the 1920s, the brand grew into a dominant force in valves and semiconductors, with production spanning facilities in Mitcham and Southampton.
Mullard focused primarily on vacuum tubes—or "valves"—that powered high-fidelity amplifiers and professional recording equipment, alongside early transistors and audio drivers. Historical products like the 1960s Mullard 510 valve amplifier exemplified their expertise in hi-fi amplification, while their hand-assembled valves became staples in studio and home systems. Though not a modern maker of speakers, turntables, DACs, or headphones, their components influenced entire audio chains.
Today, Mullard holds a revered position as a vintage high-end icon among audiophiles and collectors, celebrated for the "Mullard sound"—warm, detailed, and musical. Reissues and NOS tubes command premium prices in the boutique market, cementing its legacy over a century of craftsmanship amid technological shifts.
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