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Offered is „Red Feinsicherung T 10 A 5 x 20 mm“ by QSA as second-hand device from the category „Micro fuses“ on audio-markt.de - the online market place for high-end. The advert with the number 6399492249 ends on 05.11.2026 at 16:00 o'clock.
Good condition at €740 puts this right at the 25th percentile of the recent used market, so it reads as a strong buy rather than a stretch; it’s priced well below the €991 median and far under the €1,793 upper quartile. For a niche Quantum Science Audio piece, that’s exactly the sort of level that should get attention if the item is genuine and complete.
What makes it appealing is the type of product itself: these audiophile fuses are bought by enthusiasts chasing a small but often noticeable refinement, and demand tends to stay steady because the audience is specific. In clean condition, with the right rating and size, the upside is simple: you’re paying a bargain-level asking price for a specialist tweak component that usually doesn’t sit this low in the market.
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.
