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Mullard 1963 Bruxelles type f33, looks like DD getter but can't guarantee as too hard to see from the top. It was bought tested like new but I,don't have a tester to test it, aold as is.I've used for a few hours to make sure it's working as it should.Pick up available at Ultimo NSW2007 office hou...
This listing is firmly in seller’s market territory for Mullard rectifiers, and A$275 is an ambitious ask for an unknown-condition GZ34. Typical used Mullard GZ34s in good condition range from A$150 to A$220, with the fat-base, early-build f31 versions sometimes reaching A$240–A$260; anything above A$260 without clear provenance or testing data sits well above the 75th percentile. Unless this is a verified early f31 in mint, original-owner condition with low hours, the price is hard to justify.
The Mullard GZ34 remains a top-tier 5AR4 rectifier prized for its smooth, musical compression and low noise, especially in vintage-style amps like Marantz 8B or Fisher 500C. Early fat-base versions (build code f31) are the most sought-after for their tonal richness. However, without condition details, tube age, or testing results, the A$275 price carries real risk. A fair deal would be under A$220; at this price, you’d want full disclosure, a test report, or a return option to make it a worthwhile 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.
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