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Model 8AD Highlights
Assembled by hand with foreign and domestic parts in Orlando Florida, USA
18AWG LC-OFC conductor for superior signal transfer
2.5% silver-plated wire provides superior digital performance
Best dielectric insulator: Skin/Nitrogen injected foam PE/Skin
Triple shielded to keep noise from entering the signal path
Decorative woven jacket over a UL® CL2 PVC jacket
Available in custom lengths, please contact us for details.
All Series 8 audio cables are meticulously assembled by hand in Orlando, Florida. The Series 8 Mark II Digital Audio cables begin with extremely high-grade linear crystal copper (LC-OFC) that is silver plated to support higher frequency performance specifically for digital audio applications. To maintain a consistent 75 Ohm impedance, the coaxial Series 8 S/PDIF digital audio cable’s 18AWG silver-plated center conductor is surrounded by three perfectly concentric layers of dielectric which consist of a skin, foamed PE and a final skin. Heavy triple shielding block noise from entering the signal path. The Mark II cables are silver soldered onto proprietary RCA connectors made with Tellurium (TE) copper contacts increasing conductivity and strength. The 8AD MKII precision engineering supports wide bandwidth applications to transmit multichannel audio accurately.
Tributaries cables incorporate a host of patented technologies. Beginning with copper made specifically for audio applications; conductors are multi-gauge in design with individually insulated strands and precision impedance. The Tributaries collection is complemented by painstakingly meticulous hand-craftsmanship.
Copper
One of the most important considerations in developing audio cables is the grade of copper. Typical high quality electrical grade copper has a purity level of 2N and approximately 1500 crystal per foot. Signals crossing thru these crystal boundaries result in loss and distortion. The next level above this is oxygen-free copper (OFC), the purity of OFC varies. Tributaries uses 2 grades: 3N OFC and a high-conductivity oxygen-free copper (HC-OFC) with 4N of purity. Both are extruded in an oxygen-free environment resulting in only 400 crystals per foot. Series 8 cables use copper with purity of 5N called “linear-crystal” copper (LC-OFC). LC-OFC is carefully drawn to produce only 70 crystals per foot, a vast improvement resulting in less loss and distortion.
Insulated Multi-Gauge Conductors
Tributaries uses solid conductors in its audio cable design. Although stranded cables are valued for their flexibility, the signal can jump from strand to strand in an undesirable manner causing distortion. Another undesirable effect is oxidation which can quickly spread between strands and cause a diode effect impeding signal flow. Conductor size also has an influence on sound. Large conductors transmit signals with less resistance than smaller ones and will also more accurately reproduce the lower frequencies; medium gauge conductors, the mid frequencies; and fine gauge conductors the high frequencies. Most theories cite skin effect and flux density as reasons for this phenomenon. Further, insulating gauges from one another result in greater clarity.
Cable Geometry
Tributaries audio cables use a twin-axial design. Twin-axial cables have two equally balanced conductors precision twisted and surrounded by a shield. Conductors are insulated using Polyethylene. Polyethylene is chosen because its transparency is similar to Teflon but without the harshness in the high frequencies. Polyethylene is flexible and has a sound quality that is warm and balanced. The shields have 360° coverage to keep noise from entering the signal path. Series 6 and 8 cables include copper braided shields with lower resistance for trapping induced noise current. In this design the signal and return have dedicated separate conductors and the shield is free to be connected at the source end only eliminating EMI & RFI induced noise from entering the receiver. The best balanced cables are triple balanced with three equally balanced twisted conductors surrounded by a shield. In a balanced system using dedicated conductors for the positive, negative and ground with an additional shield connected only at the source end delivers audible improvements by lowering the noise allowing you will hear more of the recorded music.
