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Offered is „QSA Silver Steckdose“ by QSA as second-hand device from the category „HiFi-Accessory“ on audio-markt.de - the online market place for high-end. The advert with the number 5861026100 ends on 15.11.2026 at 14:25 o'clock.
At €1,490, this sits above the €1,348 75th percentile for recent used comps, so it reads as ambitious rather than a steal. It is not wildly off, but it is priced at the top end of the current used market, so a buyer should expect something especially clean, complete, or lightly used to justify it.
That said, Quantum Science Audio gear is bought for what it does musically: lowering grit and hash, opening up texture, and making a system sound more composed without obvious downside when properly integrated. If this is a tidy, complete example with original packaging or documented provenance, it could still make sense for someone specifically chasing that presentation; otherwise, there is room to negotiate.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Quantum Science Audio (QSA) emerged in early 2020 under the leadership of Steven Tsang, an electronic engineering expert with deep roots in audio consulting. Based in Scottsdale, Arizona, with ties to Hong Kong where Tsang honed his expertise, the brand quickly carved a niche through relentless innovation in power components. Drawing from over two decades of proprietary research, QSA embodies a fusion of technical discipline and audio obsession, prioritizing subtle yet profound system enhancements.
The company's focus centers on high-performance aftermarket fuses, including thermal, slow-blow, automotive, and specialized AC variants like inlets, outlets, and panel breakers. QSA also extends into power receptacles and related accessories, all engineered to eliminate so-called "bottlenecks" in signal paths. Their lineup spans accessible entry points at around $28 to ultra-premium models commanding exorbitant prices, reflecting escalating tiers of advanced materials and quantum-inspired treatments.
In the hi-fi market, QSA occupies a polarizing boutique position among high-end enthusiasts, celebrated by some for transformative sound improvements in power delivery. Top models attract audiophiles chasing marginal gains, though skeptics dismiss the claims as overreach amid long production lead times. This niche status suits discerning buyers open to experimental upgrades in an otherwise crowded field.
See all Quantum Science Audio listings on RADAR.
