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Sennheiser HD660s Headphones - Over/On Ear Great condition. Comes with a stock 6.35mm cable and a aftermarket balanced cable, as well as a nice carrying case. Condition: Excellent Payment Method: Cash, EFT Region/State: (NSW) New South Wales/Australia By woodhead 0 Comments AUD $350 Date: August 21, 20241 yr
This is a buyer’s opportunity in the used HD660s market, and the A$350 asking price is a strong deal. It sits just below the 75th percentile (A$362) and comfortably under the median of A$326? Wait—correction: A$350 is actually above the median of A$326 but still under the 75th percentile of A$362, so it’s fair, not a bargain. Let me re-anchor: the median is A$326, 25th is A$296, 75th is A$362. A$350 is between median and 75th—so it’s a fair price, slightly above median but not ambitious.
The HD660s remain a beloved open-back dynamic driver for their smooth, natural midrange and refined treble, making them ideal for vocals and acoustic music. At A$350 in excellent condition, you’re getting a proven audiophile headphone with 150-ohm impedance that pairs well with quality amps. No red flags here—this is a clean, worthwhile buy for anyone seeking tonal fidelity without the premium cost of the newer HD660S2 (which retails new around A$849).
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Founded in June 1945 by Dr. Fritz Sennheiser in a farmhouse near Hanover, Germany, Sennheiser began as Laboratorium Wennebostel, producing voltmeters and early microphones amid post-World War II reconstruction. Seven engineers from the University of Hannover joined the founder, quickly pivoting to broadcast microphones like the DM 2 in 1946 and the groundbreaking MD 82 shotgun mic in 1956. Renamed Sennheiser electronic in 1958, the family-owned company passed to second- and third-generation leadership, maintaining its innovative spirit over eight decades.
Sennheiser excels in professional and consumer audio, renowned for microphones, wireless systems, and headphones that set industry standards. Pioneers of the first open-back headphones (HD 414 in 1968) and enduring studio icons like the MD 421 and MD 441, they also produce high-end headphones, earbuds, soundbars, and conferencing solutions. While strong in pro audio like mixers and geophysical gear, their consumer focus centers on headphones and wireless tech rather than amplifiers, speakers, turntables, DACs, or cables.
Sennheiser commands a premium position in the hi-fi market, blending mid-tier accessibility with high-end excellence for discerning buyers and professionals. Trusted for reliability and sonic precision, it appeals to audiophiles seeking reference-grade headphones without boutique obscurity, backed by a heritage of technological firsts that sustains its global leadership.
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