IsoTek V5 Aquarius Power Conditioner (6-Way)

The IsoTek V5 Aquarius is a power conditioner that cleans the power for your hi-fi system via six independently filtered outlets.

Six separate filter networks in one enclosure means: every component gets its own clean power branch – and none interferes with another's power supply. Two high-current outlets (16 A) are reserved for power amps, active subwoofers or powerful integrated amplifiers, four outlets (6 A) for sources, streamers and preamps.

Why the V5 Aquarius?

Clean power is the foundation every system stands on – and usually the last thing anyone thinks about. The Aquarius lowers the noise floor in the mains and prevents your devices from interfering with each other. Compared with the EVO3 predecessor, IsoTek has built around 35% more copper into the V5's circuit board and lowered the internal resistance – more current is available instantly when the music needs it. Surge protection kicks in at 81,000 A. And yes, the enclosure looks as if it were machined from a solid block of aluminium – because, in principle, it is.

What you hear

A good power conditioner doesn't make things louder, it makes them calmer. The background turns blacker, the soundstage opens up, and details emerge that were previously buried in the noise floor. The real trick is the six separate networks: your power amp isn't held back while the streamer next to it is being filtered – dynamics stay dynamics.

Who is the V5 Aquarius suited for? (and who not – plain talk)

The Aquarius is the right choice for a complete, mid-range to upper-tier system that runs off a single socket and is starting to react touchily to mains noise. Plain talk: if you're just running an active Bluetooth speaker, you won't get your money's worth here – that budget is better spent on the source or speakers. And an Aquarius doesn't fix a fundamentally poorly matched system; it extracts the last bit of calm from a good one.

Our verdict

The V5 Aquarius is one of the most well-balanced power conditioners in its class: enough high-current reserve for genuine power amps, six cleanly separated outlets, and a look that cuts a fine figure in any rack. Our clear recommendation for complete systems in the mid to upper segment – when power is the last missing piece of the puzzle. The specialist press agrees: the V5 Aquarius carries the hi-fi+ Editor's Choice Award 2026.

Technical specifications

• Type: power conditioner / mains filter, 6 outlets + System Link
• Outlets: 4× medium-current (6 A) + 2× high-current (16 A)
• Mains input: 16 A IEC C20
• Mains voltage: 100–240 V / 50–60 Hz
• Max power: 3,680 W (16 A / 230 V)
• Surge protection: 81,000 A
• Internal wiring: OCC copper, silver-plated, FEP dielectric
• Dimensions (W × H × D): 450 × 110 × 350 mm
• Weight: 9.5 kg
• Warranty: 2 years, extendable to 3 years with registration
• Included: IsoTek EVO3 Premier power cable 1.5 m (CH or EU)

Frequently asked questions

Do I need a separate power cable for the IsoTek V5 Aquarius?

No. An IsoTek EVO3 Premier power cable (1.5 m) is already included, in CH or EU version to match your socket. An upgrade to a higher-grade IsoTek cable is possible later, but not necessary.

Does my system lose dynamics because of the V5 Aquarius?

No. The two high-current outlets at 16 A deliver up to 3,680 W (230 V), so power amps can meet their peak current demand without restriction. The system gains calm without the dynamics suffering.

Why buy the IsoTek V5 Aquarius at HD Zürisee?

Because power conditioning depends on the environment. HD Zürisee in Wädenswil checks with you whether the Aquarius fits your system, supplies it as an authorised IsoTek dealer with its own technician, and installs it on site if you wish.

Goes well with

You'll find high-quality power cables and connectors in the Cables & Connectors category, and the rest of the IsoTek range in the IsoTek overview.