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Unknown condition, but at US$525 this is well above the usual used market for comparable listings: the median is US$57, with US$31 at the 25th percentile and US$122 at the 75th. On those numbers, this is not a fair everyday buy; it’s an ambitious ask unless these are genuinely exceptional, verified pulls with strong test results and collector-grade provenance.
That said, Mullard 12AX7/ECC83 tubes are prized for their rich, dimensional midrange, low noise potential, and long-term desirability, especially early British production. The upside here is if the pair is tightly matched, properly tested, and truly scarce square-getter/tall-plate examples, but at this price a buyer should want clear test data, matching details, and photos of the etched codes before paying up.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
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.
See all Mullard listings on RADAR.
