AUDIOQUEST COFFEE Mini USB - OCCASION

USB 2.0 Type A-Mini ultra-high performance cable, 10% solid silver plated, for Hi-Fi Digital Audio

Available length 3m

In 1982, Sony gave us 'Perfect sound forever', along with the attitude that 'it's only digital, so all CD players sound the same'. This was disproved and quality differences between players became accepted truths. Then came the separate transport and DAC combos, which brought the opinion that "all digital S/PDIF audio cables sound the same ..." until this too was disproved. Now the frontier has shifted once again. Is digital audio really just one and zero? We don't believe it, and once you've had a chance to listen to Coffee USB, you won't think so ...

FEATURES

DIELECTRIC POLARISATION SYSTEM WITH RADIO FREQUENCY TRAP
All insulation between two or more conductors is also a dielectric whose properties will affect signal integrity. When the dielectric is unbiased, dielectric entanglement (non-linear absorption and release of energy) causes different amounts of time delay (phase shift) for different frequencies and energy levels, which is a real problem for time-sensitive multi-optical audio. The inclusion of an RF trap (developed for AudioQuest's Niagara series of PowerQuest products) ensures that RF noise is not induced into the signal conductors by DBS field elements. (DBS, US Patent 7,126,055 and 7,872,195 B1)

SOLID CONDUCTORS WITH 10% SILVER
Solid conductors eliminate strand-to-strand interaction distortion and reduce jitter. Silver-plated conductors are excellent for very high frequency applications, such as audio and HDMI video. These signals, being high-frequency, travel almost exclusively on the conductor surface. Since the surface is pure silver, the performance is very similar to that of a solid silver cable, but much closer to solid copper cable. This is an incredibly economical way to produce HDMI cables of the highest quality.

3-LAYER CARBON-BASED NOISE-DISSIPATION SYSTEM (NDS)
100% shield coverage is easy to achieve. Preventing captured radio interference (RFI) from equipment ground reference modulation requires QA's Noise Dissipation System (NDS). Conventional shielding systems typically absorb and then discharge noise/ RF energy to component ground, modulating and distorting the critical ‘reference’ ground plane, which in turn causes signal distortion. Alternating layers of metal NDS and carbon-filled synthetics ‘shield the screen’, absorbing and reflecting most of this noise / RF energy before it reaches the grounded layer.

RIGID FOAM INSULATION
Rigid foam insulation (HCF) ensures a critical signal pair geometry. Any solid material adjacent to a conductor is actually part of an imperfect circuit. Cable and circuit board insulation materials all absorb energy. Some of this energy is stored and then released as distortion. Rigid cell foam insulation is similar to the PE foam used in our cheaper Bridges & Falls cables, and is injected with nitrogen to create air pockets. Since nitrogen (like air) does not absorb energy and therefore does not release energy from or into the conductor, distortion is reduced. In addition, the stiffness of the material allows the cable conductors to maintain a stable relationship along the entire length of the cable, producing a stable impedance character and further reducing distortion.