Audioquest Pearl USB 2.0 A > B
USB A to B cable
- Gold-plated connectors (stable and durable connection).
- LGC copper conductors (smoother and clearer sound).
- Hard-Cell Foam insulation (minimal dielectric distortion).
Price range: from €49,95 to €124,95 VAT incl.
Plus shipping costs
El AudioQuest Pearl USB 2.0 It is a digital transmission cable with connectors USB Type A to Type B, specifically designed to connect computers, digital players or hard drives to DAC'sAudio interfaces or hi-fi equipment with USB input. Its architecture focuses on minimizing temporal distortion (jitter) and radio frequency (RF) interference that degrades high-resolution audio signals. It uses solid conductors of long grain copper (LGC), isolation of hard cell foam (HCF) and a system of metal layer noise dissipation (NDS) to preserve signal integrity. Compatible with any device that uses a connection USB 2.0 High Speed (until 480 Mbps), is designed both for audiophiles looking to improve their digital chain and for professional studios or facilities where transmission quality is critical.
Drivers long-grained copper solids (LGC)
Pearl cable uses solid conductors made of long grain copper (LGC)This technology significantly reduces impurities and crystal boundaries within the metal. In conventional cables, these boundaries act as micro-obstacles that distort the signal, especially at higher frequencies.By reducing these points of discontinuity, the LGC It allows the digital signal to travel with less alteration, resulting in cleaner and more accurate playback. In practice, this means that the fine details of a high-resolution recording—percussion attacks, natural reverberations, timbre nuances—reach the DAC with greater fidelity.
Solid conductors, unlike stranded ones, also reduce capacitive and inductive effects that can introduce timing errors (jitter). Although jitter is measured in nanoseconds, its accumulation affects the naturalness of the sound, especially in mid-to-high-end systems.
The result: a digital chain where the analog conversion starts from a more complete signal, with fewer corrections from the receiver.
Outstanding Features by Audioquest Pearl USB 2.0 A > B
Improved signal transmission and long-term corrosion resistance.
Clearer and smoother sound by minimizing distortion.
It maintains a stable impedance for a more accurate signal.
Absorbs and reduces radio frequency interference (RFI).
Isolation Hard-Cell Foam: dielectric stability
The insulation surrounding each conductor is made of hard-cell foam (HCF)A dielectric material that combines air and polyethylene in a controlled geometric structure. Air, having a virtually ideal dielectric constant, minimizes signal absorption and phase distortion.In cables with conventional solid dielectrics (compact PVC, dense polyethylene), some of the signal energy is temporarily stored in the material and released with minimal delay, causing phase shifts and loss of definition. HCF It drastically reduces this phenomenon thanks to its low density and cellular geometry.
Furthermore, this type of isolation maintains a stable characteristic impedance of 90 Ω throughout the entire cable, preventing signal reflections that could cause reading errors at the receiver. A constant impedance is especially important in USB cables carrying high-resolution audio, where each data packet must arrive without corruption.
In summary: less dielectric distortion, greater time accuracy, and more linear transmission from the source to the DAC.
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System metal layer noise dissipation (NDS)
The Pearl cable integrates the Noise Dissipation System (NDS), a metallic layer that surrounds the conductors and acts as a selective barrier against radio frequency interference (RFI) generated by Wi-Fi routers, mobile phones, switched-mode power supplies and other electronic devices present in any home or professional environment.This shielding is not a simple copper mesh: its design is optimized for absorb and reflect RF frequencies can modulate the digital signal and generate audible artifacts (metallic hissing, harshness in the treble, lack of clarity). By draining this interference to ground, the NDS reduces contamination of the USB signal before it reaches the DAC.
Is your system near a router or a mobile phone charger? The effect of NDS is especially noticeable in these scenarios, where interference is constant and widespread. Instead of adding background noise, the cable acts as a passive filter, allowing only useful information to pass through.
The result: a cleaner USB signal, with less RF-induced jitter and a more stable and defined stereo image.
Connectors gold plated and low distortion soldered
The connectors USB Type A and Type B The Pearl's are bathed in oroThis material does not oxidize over time and maintains optimal electrical conductivity even after multiple insertions. In conventional connectors, the oxide layer that forms on the contacts increases contact resistance and can generate micro-arcing or intermittent signal loss.The gold plating ensures a stable, low-resistance connection, especially relevant in power lines (5V, 500mA) and in the differential data lines (D+ and D−), where any irregularity can result in transmission errors or noise injected into the DAC.
In addition, AudioQuest uses low distortion welding at the internal junctions between the cable and connector. Conventional solders with high lead or impure tin content act as small nonlinear resistors, introducing low-level harmonic distortion. The high-purity solder used in the Pearl minimizes this effect.
In practice: reliable connections, no degradation from oxidation, and lossless transmission from the first contact to the last pin.
Compatibility universal and directional control
The Pearl cable is compatible with any device that meets the standard. USB 2.0 High Speed (until 480 MbpsThis includes external DACs, audio interfaces, digital players, computers, hard drives, printers, and cameras. Its configuration USB Type A (male) to Type B (male) It is the most common in hi-fi and professional audio equipment.AudioQuest specifies the directionality Regarding the cable: connector A should be connected to the source (computer, player) and connector B to the destination (DAC, interface). This is not arbitrary: the conductors are manufactured in a specific direction during the extrusion process, and this orientation affects how they drain RF interference to ground.
Connecting the cable in the correct direction maximizes the efficiency of the NDS system and reduces noise injected into the receiver. Although the cable works in both directions (the USB protocol allows it), respecting the indicated direction optimizes sound performance.
In short: a universal cable by specification, but optimized in its internal design to extract maximum performance from your digital chain.
Technical Specifications by Audioquest Pearl USB 2.0 A > B
You can get more information on the official page of Audioquest Pearl USB 2.0 A > B
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