Double Helix Cables Custom DC Umbilical


Jul 30, 2015
Washington, DC
Some may assume that a DC umbilical cable wouldn't have a big influence on sound quality, but as a user of Modwright's modified disc players (currently using modified Marantz SA8005) that connect via DC umbilical to a separate tube rectified power supply, I have experienced first hand how big an improvement in sound quality a better umbilical cable can make. I have tried Modwright's "Truth" umbilical (made by Cardas I believe), a custom one by Cerious Technologies, Modwright's current "premium" offering from Wywires, and a custom umbilical from Audio Magic using their Illusion "Liquid Air" (liquid polymer conductor in a tube with a copper return). Of these the Audio Magic has been the best performer by a clear margin. Note that the Modwright umbilical uses 4 pin XLR connectors.

I just received a custom DC umbilical made for me by Double Helix Cables that uses their 19awg "Prion4" OCC silver litz wire for the + and - runs, and their "Compliment" 15awg OCC copper litz conductors for the ground and heater pins. I asked for the silver/copper hybrid to avoid the issues I’ve typically heard with all silver cables. Cardas and Wywires did the same for the same reason with their versions. It uses the state of the art AECO male XLR connector, and like the Westminster Labs umbilical the (passive) shielding is carbon fiber fabric. Double Helix has received awards/rave reviews for their headphone cables. Mine was their first DC umbilical. Right out of the box without being burned in this cable has yielded significant improvements in clarity, resolution, and soundstage width. While I wouldn't expect it to match the 4x more expensive Westminster Labs version, it is clearly a better cable than my previous reference from Audio Magic, and may be a good lower cost alternative to the Westminster Labs. I will report back once it is burned in and I have listened to it for a while.




  • thumbnail_IMG_3790 (2).jpg
    thumbnail_IMG_3790 (2).jpg
    231.2 KB · Views: 35
Last edited:

About us

  • What’s Best Forum is THE forum for high end audio, product reviews, advice and sharing experiences on the best of everything else. This is THE place where audiophiles and audio companies discuss vintage, contemporary and new audio products, music servers, music streamers, computer audio, digital-to-analog converters, turntables, phono stages, cartridges, reel-to-reel tape machines, speakers, headphones and tube and solid-state amplification. Founded in 2010 What’s Best Forum invites intelligent and courteous people of all interests and backgrounds to describe and discuss the best of everything. From beginners to life-long hobbyists to industry professionals, we enjoy learning about new things and meeting new people, and participating in spirited debates.

Quick Navigation

User Menu

Steve Williams
Site Founder | Site Owner | Administrator
Ron Resnick
Site Co-Owner | Administrator
Julian (The Fixer)
Website Build | Marketing Managersing