15. July 2026

IsoTek V5 Syncro Uni 16: Recommended purchase by lite-magazin.de

In detailed listening comparisons ranging from the simplest power strip to the ultimate combination with the IsoTek V5 Sigmas mains filter, lite.magazin.de tests the IsoTek V5 Syncro Uni 16 DC blocker and gives it a clear recommendation:

[With the IsoTek V5 Syncro Uni 16], the bass drum has more punch, the hi-hat sounds more precise, and the cymbals have greater presence. The brass section, now playing the intro theme as a full ensemble, sounds more lively. The bass now has more body while also sounding more defined.

[…]

The differences in the lead vocals are astonishing: Tosho’s rough, abrasive voice sounds considerably more present and distinctive. In particular, the growling endings of his vocal lines, which had never been heard like this before, now achieve their full effect.

[…]

Even when used in combination with the IsoTek Evo 3 Polaris power strip, which filters common-mode and differential-mode interference by means of a filter network, the V5 Syncro Uni 16 delivers yet another sound upgrade. The improvement extends to every area: the musicians appear more tangible. Their performance is more dynamic. The soundstage becomes more spacious. Transparency and clarity are increased: we move closer to the desired ‘black background’, where only the music is audible, without distracting background noise or a grey veil.

Conclusion

The IsoTek V5 Syncro Uni 16 impresses as a highly effective DC blocker. This upstream device ensures that either an individual component or the entire audio system is supplied with alternating current that is free from sound-degrading DC components. The result is a significant improvement in performance: playback is more precise and dynamic, livelier and fresher. The blacker background and increased clarity make it possible to perceive a greater wealth of detail while providing more transparency and better insight into the music. Musicians and instruments are rendered with greater three-dimensionality, and the soundstage is wider and more open. The audio system already possesses all these qualities, but the V5 Syncro Uni 16 enables it to realise its full potential. The latest version of this DC blocker now combines its performance benefits with overload and short-circuit protection. The IsoTek V5 Syncro Uni 16 is therefore recommended as an effective tuning upgrade or as an addition for owners of a high-quality power strip or power conditioner that does not include DC filtering. Highly recommended!

Pros

  • gains in dynamics, liveliness and freshness
  • greater clarity, purity and transparency
  • improved resolution and greater detail
  • blacker background
  • greater presence and three-dimensionality of voices and instruments
  • wider, more open soundstage with a stronger sense of three-dimensionality
  • greater precision
  • bass gains in volume, drive, definition and weight
  • more coherent reproduction and better timing
  • protection of all components against overload, overvoltage and short circuits
  • resettable thermomagnetic circuit breaker
  • mounting tabs for wall installation
  • M6 threaded sockets for screw-in spikes
  • very good build quality
  • easy operation

Cons

  • no phase marking on the IEC mains inlet or earthed mains socket [Note: Phase marking is only useful when the phase orientation of the wall socket is also known. We explain here how to determine this using a phase-tester screwdriver].

Rating
Practicality: 98/100
Performance: 99/100
Features: 98/100
Price/performance: reasonable

Read the full test in German Dealer Locator