AudioQuest Carbon Digital Coax Cable at Vinyl Sound Toronto Canada

The AudioQuest Carbon is a high-performance digital coaxial cable from AudioQuest (Irvine, California, USA), available at Vinyl Sound in Toronto, Canada. Designed for S/PDIF digital audio connections between CD players, DACs, streamers, and AV receivers, the Carbon features Solid 5% Silver conductors, a Carbon-Based 5-Layer Noise-Dissipation System (NDS), and high-speed data capacity for accurate digital signal transfer. A combined foil and silver-plated braid shield, cold-welded gold-plated RCA terminations, and Hard-Cell Foam insulation complete a digital coax cable engineered to minimize jitter, noise, and signal degradation in the critical digital audio path.

Solid 5% Silver Conductors and Hard-Cell Foam Insulation

The AudioQuest Carbon uses a solid conductor drawn from a 5% silver alloy, combining the low grain-boundary distortion and superior conductivity of silver with the structural stability required for a robust coaxial digital cable. Solid construction eliminates the strand-interaction distortion produced by stranded center conductors, which introduces noise and timing errors into digital audio signals that can manifest as increased jitter and a degraded noise floor at the DAC. Hard-Cell Foam insulation surrounds the center conductor, providing a low-dielectric-constant material that minimizes the energy storage and release that degrades signal timing accuracy. Together, the silver conductor and Hard-Cell Foam insulation maintain the precise 75-ohm impedance that S/PDIF digital audio requires for clean signal transmission without reflections.

Carbon-Based 5-Layer Noise-Dissipation System

The AudioQuest Carbon's 5-Layer Noise-Dissipation System is the most advanced NDS architecture AudioQuest applies to a digital coaxial cable. Conventional coaxial cables use a single foil or braid shield that absorbs RFI and drains it directly to the component ground reference, modulating the ground plane and introducing noise that the DAC cannot distinguish from the digital signal. The Carbon's 5-layer NDS uses alternating layers of metal and carbon-loaded synthetic materials to absorb and reflect RF energy progressively before it reaches the ground conductor, with a combined foil and silver-plated braid outer shield providing additional high-frequency RFI rejection. This multi-stage approach keeps the ground reference stable and the noise floor low, reducing the jitter contribution of the cable itself and allowing the DAC to recover a cleaner clock signal from the incoming S/PDIF stream.

Key Features

• Solid 5% Silver Conductor: Silver-alloy solid center conductor eliminates strand interaction and minimizes grain-boundary distortion for accurate, low-noise digital signal transmission.
• Hard-Cell Foam Insulation: Low-dielectric-constant foam insulation minimizes energy storage around the center conductor, preserving signal timing accuracy and maintaining precise 75-ohm impedance.
• Carbon-Based 5-Layer NDS: Five alternating layers of metal and carbon-loaded synthetics absorb and reflect RFI progressively before noise reaches the ground reference, significantly reducing jitter contribution from the cable.
• Foil and Silver-Plated Braid Shield: Combined foil and silver-plated braid outer shield provides comprehensive high-frequency RFI and EMI rejection across the full operating bandwidth of the cable.
• High-Speed Data Capacity: Engineered for reliable high-speed S/PDIF digital audio data transfer between sources and DACs at all standard sample rates and bit depths.
• Cold-Welded Gold-Plated Terminations: Gold-plated RCA plugs resist corrosion and oxidation, while the cold-weld termination process avoids solder-related signal degradation at the connection point.

Technical Specifications

Frequently Asked Questions

What is the AudioQuest Carbon digital coax cable?

The AudioQuest Carbon is a 75-ohm S/PDIF digital coaxial interconnect built with a Solid 5% Silver center conductor, Hard-Cell Foam insulation, a Carbon-Based 5-Layer Noise-Dissipation System, and a combined foil and silver-plated braid shield. It is designed to transmit digital audio between CD players, transports, DACs, streamers, and AV receivers with minimum jitter, noise, and impedance deviation. Terminations are cold-welded gold-plated RCA plugs.

How does the AudioQuest Carbon digital coax compare to the AudioQuest Cinnamon or Coffee digital coax?

The AudioQuest Carbon sits above the Cinnamon and below the Coffee in the AudioQuest digital coaxial cable range. The Cinnamon uses a Solid Perfect-Surface Copper (PSC) conductor and a simpler 3-layer NDS configuration, while the Carbon advances to a Solid 5% Silver conductor and a Carbon-Based 5-Layer NDS for greater RF noise absorption and lower jitter contribution. The Coffee steps further with Perfect-Surface Silver conductors and a 5-layer NDS with DBS biasing. Compared to competitors such as the Chord Company Shawline Digital and WireWorld Starlight 8, the Carbon's carbon-layer NDS architecture addresses ground-reference modulation in a way that conventional foil-and-braid shield designs do not.

Does digital coaxial cable quality affect sound quality?

Yes, digital coaxial cable quality affects the jitter performance and noise floor of the digital audio signal, both of which influence the sound quality reproduced by the DAC. A poorly shielded or incorrectly terminated digital coax cable introduces RFI into the ground reference, which modulates the timing of the S/PDIF signal and increases jitter at the DAC's clock recovery circuit. Impedance deviations caused by poor insulation or construction cause signal reflections that compound this jitter. The AudioQuest Carbon's 5-Layer NDS, 75-ohm Hard-Cell Foam construction, and solid silver conductor directly address all three mechanisms.

What is the difference between a digital coaxial cable and a standard RCA interconnect?

A digital coaxial cable is a 75-ohm impedance-controlled coaxial cable designed specifically for S/PDIF digital audio transmission, while a standard RCA analog interconnect is optimized for low-level audio signal transfer without a defined characteristic impedance. Using an analog interconnect for a digital coaxial connection creates impedance mismatches at the connectors and along the cable, producing signal reflections that increase jitter and can cause data errors at higher sample rates. The AudioQuest Carbon is purpose-built as a 75-ohm digital coaxial cable and should not be substituted with a standard analog RCA interconnect.

What digital audio sources and DACs is the AudioQuest Carbon compatible with?

The AudioQuest Carbon is compatible with any audio component that uses the S/PDIF coaxial digital audio standard via RCA connectors, including CD players, Blu-ray players, network streamers, digital preamps, AV receivers, and external DACs. Common pairings include sources such as the Cambridge Audio CXC transport, Audiolab 6000CDT, and Bluesound Node, connected to DACs such as the Chord Qutest, Schiit Yggdrasil, and Topping D90. The cable supports all standard S/PDIF sample rates from 44.1kHz to 192kHz.

Where can I buy the AudioQuest Carbon digital coax cable in Toronto or Canada?

The AudioQuest Carbon digital coaxial cable is available at Vinyl Sound, an authorized AudioQuest dealer in Toronto, Canada. Vinyl Sound carries the full AudioQuest digital cable lineup in-store and online, with complete manufacturer warranty support for Canadian customers.

Can the AudioQuest Carbon digital coax be used for video signals?

Yes, the AudioQuest Carbon's 75-ohm coaxial construction is technically compatible with composite video and other 75-ohm video signals that use RCA connectors, as it meets the impedance specification required for these applications. However, the Carbon is specifically optimized for S/PDIF digital audio in terms of its conductor, insulation, and noise-dissipation design, and AudioQuest's HDMI and component video cable lines are the appropriate choices for video signal applications in a home theatre system.