Benefitting from learnings upon the development of our flagship SRX XL cable line, our new Foundation XL USB cables deliver notably improved performance above the Foundation SX series and continue to be offered at attractive price points. While the line as a whole can be thought of as an evolution from the Foundation SX, the cable has been rethought holistically, applying the same improvements we’ve made to our new flagship SRX XL cable series.
For the Foundation XL USB, we now apply the same SRX XL UEF compound as described above to improve shielding. Then, the cables are run through the same SRX XL High Voltage Conditioning treatment that we use for our flagship SRX XL cables.
With Foundation XL, you’ll notice an improved dynamics and a more natural timbre, all with a reduction in noise floor to keep details of the music smoother and more realistic than its predecessor.
Synergistic Research - Foundation XL USB
US $695/1m
($195 per addl 1 meter/ Available in 1, 2, 3 and 5m)Foundation XL USB Build Notes:
4 each Copper Matrix conductors:
- 23 gauge solid copper conductors
- Dielectric: Solid Polyethylene
- Shielding: Dual Silver Mylar / Braid shield-Quantum Tunneled Ground Plane Technology
- Listened for signal direction before build
- Hand crafted in our California factory
Build Notes:
- SRX XL Matrix Shielding: UEF coating with Graphene is applied directly to connectors significantly reducing the noise floor and allowing a purer signal to transfer with less grain providing more warmth and detail
- SRX XL Quantum Tunneling: After the cable is completely assembled all connections and cabling are treated with 1,000,000 volts of electricity at specific frequencies and pulse modulations, creating a canal in the conductor material and contact points at the molecular level that allows electrons to flow more freely. This allows the maximum amount of low level information through the conductors and provides for the highest amount of realism in your music
- Secondary UEF Blue Treatment originally developed for SR Blue Fuses
- Hand build time: 1 hours
- 5 day Burn-in: 2 step process
- Hand crafted in our California factory


















