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Offered is „Aquarius V5 (Schweizer Ausführung)“ by IsoTek Power Systems Ltd. as exhibit from the category „Line Filter“ on audio-markt.de - the online market place for high-end. The advert with the number 4168603787 ends on 26.10.2026 at 16:52 o'clock.
At €1,999, this sits well above the €1,079 median and even above the €2,009 75th percentile, so the ask is on the ambitious side for the current used market. It’s not wildly out of line for a clean, sought-after mains conditioner, but it does need to justify itself against stronger-value examples that land much closer to the middle of the market.
That said, these units are well regarded for giving a system a quieter noise floor, better perceived dynamics, and more separation without changing the core character of the rig. The Swiss version may appeal to buyers who specifically need that fitment, and a tidy, complete, well-kept example can still make sense if you’ve been waiting for one. At this price, though, I’d want especially good condition and full accessories to feel fully comfortable.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
IsoTek, founded in 2001 in England by Keith Martin, emerged from a focused mission to combat poor mains power quality that hampers hi-fi performance. Martin's vision drove rigorous research into power optimization, establishing the brand as a pioneer in delivering clean electricity to audio systems. From its inception, IsoTek has prioritized innovation, with products manufactured in Europe to ensure durability and precision.
The company specializes exclusively in power conditioning solutions, including highly specialized mains conditioners and enhancement power cables. These components actively filter and purify electricity from wall sockets, benefiting amplifiers, source components, turntables, and home cinema setups without altering core audio gear categories like speakers or DACs. This narrow focus allows IsoTek to offer scalable upgrades across budgets, from entry-level to reference-grade systems.
IsoTek commands a premium position in the high-end hi-fi market as the recognized leader in clean-power technology, trusted by over 100,000 customers in 45 countries and endorsed by brands like Arcam, Marantz, and Nordost. Hundreds of awards from audio critics affirm its reputation for transformative sound improvements and equipment protection, appealing to discerning enthusiasts seeking measurable performance gains.
See all IsoTek listings on RADAR.
