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The EarMax is a notable little OTL Class A valve headphone amplifier, but £240 is an ambitious ask here: it sits just above the £234 75th-percentile asking price, versus a £143 median and £98 lower quartile across 22 comparable listings. It is not automatically bad value, but the premium needs to be justified by excellent condition and genuinely desirable valves.
Its appeal is real: the minimalist all-valve design is known for an intimate, spacious presentation with dynamic headphones, and the separate power supply keeps the amplifier compact. The included Valvo and Mullard valves are a worthwhile attraction, particularly if tested and healthy, but “unknown” condition makes that crucial rather than incidental. Check exact EarMax variant, mains voltage, hum, channel balance, socket condition, and whether the original power supply is included; at £240, a demonstrated valve condition and clean operation are needed to make this a sensible buy.
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.
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