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Sennheiser IE 600 Headphones - In Ear Monitors Sennheiser IE 600 in ear monitors. Excellent condition. Selling in separate listing is my Mojo 2. Features Resilient AMLOY-ZR01 amorphous metal housing, 3D-printed in Germany 7 mm TrueResponse transducers Gold-plated Fidelity (+) MMCX connectors for reliable connections Adjustable ear hooks and choice of ear tip adapters 0.06% THD (1 kHz, 94 dB) Direct, neutral tuning with fast, accurate bass Exceptionally neutral sound thanks to dual resonator chambers D2CA Choice of para-aramid reinforced cables (3.5 mm, 4.4 mm) Frequency response: 4 Hz – 46.5
Should you pay A$590 for a used Sennheiser IE600 when comparable listings show a median of A$567? This asking price sits just above the 25th percentile (A$494) and slightly below the 75th percentile (A$588), making it a fair deal that aligns closely with the typical used market. It is not a bargain, but it is certainly not ambitious given the ground truth data from recent AUD listings.
The IE600 earns its reputation for delivering a fun, dynamic sound with a 7mm TrueResponse driver and a durable Zirconium Alloy shell built via 3D printing. Its excellent noise isolation and low distortion make it a standout for immersive listening, while the included suite of extras adds value. Since the listing is in excellent condition and the price is fair, this represents a solid buying opportunity for an enthusiast seeking high-quality in-ear monitors without paying new retail prices.
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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