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Symphonium Crimson 4-Wire Headphones - In Ear Monitors As new. Used for a single listening session. No marks, no wear.4BA, TrueX 4-way crossover with FLAT + PHAT technology.Includes: Full box and packaging, exclusive Altalune Audio Novaron OCC copper cable, 3.5mm and 4.4mm interchangeable plugs, all tips and accessories, minus one opened packet of tips.Reason for sale: Settled on a different IEM - down to one.Location: Sydney. Local pickup or posted at buyer's expense. Condition: As New / Mint Payment Method: PayID, Cash on pickup Region/State: (NSW) New South Wales/Australia By RhythmicVinylN
Like-new condition helps here, but A$1,700 is still only fair-to-strong rather than a steal for this model. The Crimson’s normal new pricing sits around A$2,300 for the standard cable and about A$2,600 for the higher-spec cable, so this listing lands below retail and roughly in the used sweet spot rather than at bargain-basement levels.
That said, it’s a genuinely desirable IEM: all-BA, technically capable, and known for punchy bass, strong resolution, and a big, engaging presentation. If the listing includes the original cable, tips, and case, the value is easier to justify; in like-new shape, this is the kind of buy that makes sense for someone who wants a flagship-level Symphonium without paying full new-price pain.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Symphonium Audio is a Singapore-based independent earphone maker founded in 2016 by a small team of audio enthusiasts. The company emerged from dissatisfaction with the portable-audio market and set out to build its own in-ear monitors with an audio-first approach, emphasizing in-house development and manufacturing.
Its core focus is clearly on in-ear monitors and related personal-audio products rather than a broad hi-fi catalog. Symphonium is known for premium IEMs built with careful engineering, custom tuning, and high-quality materials, with a strong emphasis on balanced-armature-based designs and robust build quality.
In market terms, Symphonium sits in the niche boutique-to-premium segment of the headphone world. It is not a mass-market brand, and its appeal is strongest among knowledgeable listeners who want serious performance, distinctive tuning, and a small-company ethos. While not as widely known as the biggest names in personal audio, it has built a reputation for ambition, precision, and strong quality control.
See all Symphonium listings on RADAR.
