[AnakChan]

  I emailed them twice and no answer.

 
He's probably busy making cables. Did you email or did you contact via their Contact page?

http://www.doublehelixcables.com/store/index.php?main_page=contact_us

P.S. That's funny I always thought DHC was UK based (like Toxic).

 

[GoldenGate]

Thanks for the tutorial! And lucky me, I just bought mini files the other day

 

[axax]

I need a balanced to 3.5 mm adapter.How can I buy ? I find but price is so high...

 

[luisandre]

I heard his cables and adapters are very good!
 
http://www.plussoundaudio.com/customcables/interconnect.html
 
If you use a balanced to 3.5 mm adapter, than I guess you don't have a balanced sound anymore, since your plug will be single ended.