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£89 looks like a strong deal: it’s well below the £146 25th percentile and far under the £183 median for recent GBP comparables, so this is priced to move rather than priced for negotiation.
This kind of Sbooster add-on is usually bought for cleaner, more stable DC power and the small but worthwhile gains that can bring in a revealing system: a quieter background, firmer timing, and a bit more ease in the presentation. At this level, the main appeal is simple value, especially if it’s complete and genuinely lightly used; I’d just confirm it’s the correct 15V version for your gear and that the adapter/cables you need are included.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Sbooster, a Dutch specialist in audio upgrade power supplies, traces its roots to 2008 when founder Wiebren Draaijer launched it under the name Squeeze-upgrade. Designed and developed in the Netherlands, the brand emerged from Draaijer's work enhancing Logitech Squeezebox players, evolving into a focused enterprise dedicated to plug-and-play solutions for hi-fi components.
The company concentrates exclusively on linear power supplies, such as the acclaimed BOTW (Best of Two Worlds) series, including the P&P ECO MKII models. These upgrades target network music players, headphone amplifiers, DACs, and other devices reliant on external PSUs, delivering cleaner power, reduced electrical noise, and superior current stability to elevate audio performance without altering the host equipment.
Positioned as a niche boutique in the high-end market, Sbooster earns praise for reliability, award-winning consistency since its 2018 MKII lineup, and tangible sonic improvements at accessible prices from its Bulgarian production. Reviews spanning 2010 to 2025 highlight its enduring value as a long-term system essential, backed by exceptional customer care, appealing to discerning audiophiles seeking precision upgrades over flashy marketing.
See all Sbooster listings on RADAR.
