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Ortofon ST-7 Transformer Selling this almost new Ortofon ST-7, didn’t have much usage as it was replaced by a phasemotion 🙂   I have all the original packaging so it can be posted safely and also pick up from Brookvale NSW.   Condition: As New / Mint Payment Method: Bank transfer Region/State: (NSW) New South Wales/Australia By hlov 0 Comments   AUD $375 Date: January 6, 20251 yr

Our Thoughts RADAR AI

Should you grab a like_new ST-7 at A$375, or wait and risk missing a very solid step-up transformer? This looks like a fair-to-good buy rather than a steal: a European second-hand listing has the ST-7 at about 375 against an original price around 880, and Ortofon’s current retail for the model sits near 899, which puts this ask in the sensible used zone once you account for import and local availability.

That’s why the ST-7 is worth a look: it’s a respected moving-coil step-up transformer with a compact, well-built chassis, good shielding/terminals, and the kind of clean, open presentation many vinyl people prefer over active gain stages. In like_new condition, the upside is simple—quiet operation, long service life, and a box that can elevate a good MC cart without fuss, so if it comes complete and unmolested, this is the sort of piece that can be a smart long-term keep.

Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.

About Ortofon

Ortofon: A Century of Precision Sound

Ortofon traces its lineage to October 9, 1918, when Danish engineers Axel Petersen and Arnold Poulsen founded the Electrical Phono Film Company in Copenhagen. The name itself derives from Greek, meaning "correct sound"—a philosophy that has guided the company's trajectory for over a century. Initially focused on synchronized sound film technology, Ortofon pivoted to audio reproduction after 1945, when the superior recording quality of new cutting equipment revealed the inadequacy of existing playback systems. This gap sparked the development of the pioneering Ortofon mono pickup in 1948, establishing the foundation for the company's future dominance.

Today, Ortofon is the world's largest manufacturer of magnetic cartridges for phonograph turntables, producing approximately 500,000 units annually. The company's product portfolio centers exclusively on phono cartridges—both moving magnet and moving coil designs—with over 300 distinct models developed since 1948. This singular focus reflects deep specialization rather than diversification, positioning Ortofon as a micro-mechanical specialist rather than a broad-based audio manufacturer.

Ortofon occupies the high-end segment of the audio market, commanding respect among vinyl enthusiasts and professional studios alike. The brand benefits from Denmark's established reputation for acoustic engineering and industrial design, supported by in-house research and development. For discerning turntable owners, Ortofon cartridges represent the gold standard—a heritage brand whose century-long commitment to cartridge excellence remains unmatched in the industry.

See all Ortofon listings on RADAR.

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