Our Verdict 
A significant improvement on plugging straight to the wall and worth investigating
Allows for an open, revealing and detailed sound
Natural, fluid presentation
A little reticent where the mid-range and dynamics are concerned
Reviewed on

This Isotek comprises the Evo Polaris mains block (£300) and Premier mains lead (£100). Isotek anticipates that vast majority of Evo Polaris blocks will be sold with the accompanying lead, so it has been priced to include two pieces of equipment.


There’s no arguing with the scale or separation of the sound the Isotek allows. Even a recording as subtly complicated as The Unthanks’ reading of Tom Waits’ No One Knows I’m Gone is laid bare, each individual strand secure in its own space.

There’s a fluency and naturalness to its presentation and a deal more heft to dynamic variations. A set-up with this Polaris/Premier combo taking care of supply duties is a more positive and confident listen, especially at the top of the frequency range.

More after the break

And yet there are mild downsides. The Isotek pairing puts an emphasis on the extremities of the frequency range, and consequently vocals can be robbed of a little character and nuance.

And there’s a touch of restraint where dynamics are concerned, a slight tendency to play quiet/loud/quiet passages a little safe.


None of which means the Isotek isn’t worth investigating, of course, just that’s it’s a slightly qualified success.

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Where to buy View all »

Isotek Evo Polaris/Premier
Largest Hi-Fi Cable, Home Cinema Cable and AV Connectivity Specialist in the UK. Widest range of the most prestigious brands. Order online for next day delivery with a 60 day money back guarantee.
The Competition 

Tacima CS947

Our Rating 
Price from £33.95