I know it is not a Senn cable, but i had a cable done for my AKG 702's with ALO SXC silver plated copper wire with my own custom made sleeving which i had done in siver Mylar with clear Teflon over the top with a section done in clear pvc to show of the ALO wire braided a bit like looking into the back of a Ferrari engine bay where you can see th engine which is really cool.
I would show a better close up photo myslef of the cable's, but not sure how to resize to an acceptable size on here?
As for the sound after listening to the AKG stock cable on my Naim Headline 2 amp with NSC power supply sounds out of this world and i am only using daps as a source currently (all in WAV format) to listen to stuff on.
After listening to Peter's (double helix) cable it is amazing that the headphone manufacturers go through the process of making a good headphone only to supply what seems like average cable with it!
My Alo SXC cable is so open and accurate it sends a tingle down my spine listening to this at times, the soundstaging is nothing like i have heard before with strings have a ressonance to it that sound like it is live from even from a studio recording and vocals i can hear the smallest details in sound down to even them breathing in and the natural sounds of siliyva in their mouth on some artist which i have never heard before not even on my 10k home hi-fi setup!
Drums are again so life like in the different range of bass it goes through down to a nice realistic bass rumble in the back groud rather than a thudding bass i have heard on some phones with the same track's.
Over all the tonal balance is superb and it is an open, nuetral and analytical sound which is my bag anyhow, but i have to say compared to the stock cable that came with my AKG's it was worth every penny to upgrade.
Which brings me to Peter, the messiah for me of how customer support should be in reality (if only big companys adopted this policy like Peter does!)
I had the choice to have the cable how i wanted and he talked me through every step with various options on what material to have cable wise for sound which did not take too long really, the long process was how to pimp the asthectic side of the cable to how one wants their cable to look, which after a thousand emails back and forth and the patients of a saint from the creator Peter i finally decided on a look and the type of materials to use to sleeve the cable.
What i liked about Peter's approach was he would always reply the same day 99% of the time and a lot of them within the hour! and would always email photo's to how thiis or that may possibly look like to help me decide.
If you look on Peter's website ;
Double Helix Cables
scroll down to the photo with JOHN BERRY COLLECTION plastered over it and that is the cable's i ordered from him.
I also had a ALO SXC with LOK rhodium rca's and antoher set with 3.5 Via blue mini jack on end instead for my other daps on the headphone out's.
Peter also went out of his way to do me a special din to rca adaptor to fit my Naim amp as it has to be akward with their din conections!
So i cannot commend highly enough to you guys as as well as his cables not only sounding out of this world for a fraction of the price it would cost to buy from i.e. Bluedragon or ALO for the same equivelent cable it is made to the highest quality workmanship wise and his customer service is second to none which i only wish i could say happened with other merchants selling their ware's!
I only set out to buy a cable for the AKG and ended up in the end through being so impressed with the gradual communications i had with him and building a good relationship that i did not hesitate to go ahead with the other cable's and did not regret it one bit.
Even sending them from the US to me in sunny old UK only took if i remember rightly four or five days tracked and insured.
I cannot wait for when i get my portable amp (possibly an RSA P51 Mustang) later on and get some more cable for that!
That is just my short view on the subject which i hope helps anyone deciding if to go for one of Peter's cables as i am over the moon with my cables especially my 702 cable which i coined during post production as the Triple "B" cable which stands for Berry-Bradstock-Badass cable derived from him using it to describe it at one stage whilst updating me with it's production stage.
This is what made it different from any other cable having that input to what you want cable material to have with choice of plugs/connectors and final looks sleeving wise also gave me great satisfication and is also a bit of fun along the way so i can only put it as being a nice, fun journey to getting a cable that is finally yours to enjoy with your liitle stamp on it created and made by a very accomplished person such as Peter or Dr.Cable as i now call him.
Any question's on the cable's any one may have i will be happy to answer, but i am sure from what i have put so far you can equate from it i am happy with the sound which is after all is the priority to having them in the first place!

- can we get a K702 smilie plz! happy jamming through my new Sony X-1060 Walkman at the mo on my Double Helix cables.