AudioQuest Diamond USB-A > B High-Definition Audio Cable (3m)

The AudioQuest Diamond USB-A > B is a high-performance USB digital audio cable designed for connecting computers and other USB source devices to compatible DACs, streamers and digital audio components. It combines 100% Perfect-Surface Silver (PSS) solid conductors with AudioQuest’s advanced noise-dissipation and dielectric-management technologies to address signal integrity and radio-frequency interference within a digital audio connection.

The Diamond USB-A > B incorporates AudioQuest’s Carbon-Based 3-Layer Noise-Dissipation System, which uses alternating layers of metal and carbon-loaded synthetics to reduce radio-frequency noise before it reaches the grounded shielding layer. A 72V Dielectric-Bias System (DBS) is also used to condition the cable’s insulation, while Hard-Cell Foam (HCF) insulation maintains stable conductor geometry along the cable’s length.

Key Features

• USB-A to USB-B digital audio connection
• 100% Perfect-Surface Silver (PSS) solid conductors
• Carbon-Based 3-Layer Noise-Dissipation System
• 72V Dielectric-Bias System (DBS)
• Hard-Cell Foam (HCF) insulation
• Direction-Controlled conductors
• Hi-Speed USB operation up to 480 Mbps
• Suitable for computer-based audio systems
• Available in 0.75 m, 1.5 m, 3 m and 5 m lengths

Perfect-Surface Silver Conductors

The Diamond USB-A > B uses solid 100% Perfect-Surface Silver conductors. AudioQuest states that the solid-conductor construction eliminates electrical and magnetic interaction between individual strands, while the highly refined PSS silver is designed to minimise distortion associated with grain boundaries and improve RF noise dissipation.

Carbon-Based Noise-Dissipation

AudioQuest’s Carbon-Based 3-Layer Noise-Dissipation System uses alternating layers of metal and carbon-loaded synthetics. The system is designed to absorb and reflect radio-frequency noise before it reaches the layer connected to ground, helping prevent unwanted RF energy from affecting the equipment’s reference ground.

72V Dielectric-Bias System

The integrated 72V DBS system conditions the cable’s insulation by polarising the dielectric material. AudioQuest states that this reduces the effects of dielectric involvement, including energy absorption and release that can affect the timing of different frequencies. An RF trap is incorporated into the DBS system to prevent RF noise from being induced into the signal conductors by the DBS field.

Hard-Cell Foam Insulation

Hard-Cell Foam (HCF) insulation is used to maintain a consistent relationship between the conductors throughout the cable. The material is nitrogen-injected to create air pockets, reducing the amount of energy stored and released by the insulation while helping maintain stable signal-pair geometry.

Specifications

Conclusion

The AudioQuest Diamond USB-A > B combines high-purity 100% Perfect-Surface Silver conductors with AudioQuest’s most advanced cable technologies, including 72V DBS, Carbon-Based Noise-Dissipation, Hard-Cell Foam insulation and Direction-Controlled conductors. For high-end computer audio systems using a USB-A source and USB-B-equipped DAC or digital component, it provides a technically sophisticated approach to maintaining signal integrity while controlling RF noise and dielectric effects.

Condition: Good

Colour: Black

Note: Product includes original packaging