High end Cables not important for certain electronics?

Not allways true even in a fully balanced system .
i owned a audio store for 10 years in Europe and had many top 
electronics top quality Balanced interconnects trumped the lesser models every time , maybe with what some would call diminishing 
returns for example the $2k cables were roughly 5% + better then a similar cables at $1k ,this applied to Every one of at least 4 well
known brands. Noise floor even lower and resolution and separation was just more defined. Equipment too will vary to some  extent I used  world class Amplifiers and preamps , not fake balanced, like most. Outthere . That have xlr,then wired to same rca grid. True balanced has Transformers input to output.and yes I used Solid state as well as vacuum tube. 

But it says right here in the manual.....

High end cables are unnecessary. End of the story.Check out Ethan Winer's null test.

As a former professional recording engineer, I can attest that cable is every bit as variable on balanced connections as unbalanced.

In some situations, cables make next to zero difference and others, large.

The only constant is YMMV

We are a Mola Mola dealer based in the U.K.

While I have the utmost respect for the designer of Mola Mola, Bruno Putzey, it seems that many top designers suffer from “blind spots” when it comes to the question of  immunity of cable quality with their designs. Lack of addressing seismic isolation in their products is another “blind spot” some top designers seem to neglect as well.

Cables, of all types, make a difference to sound quality and Mola Mola is not different in that respect. In our experience I can recommend taking a look at the cables made by Sablon for high quality, naturally balanced cable designs, that won’t break the bank.