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The Best Way to Banish All USB Audio Gremlins
The micro iUSB3.0 is what iFi Audio calls "the Total USB Solution+ that banishes all USB audio gremlins. The iUSB3.0 boasts all-original, cutting-edge USB audio technology, including Active Noise Cancellation+, REclock, REbalance, and REgenerate, technologies, while still retaining and improving upon the original PowerStation, which was at the heart of the success of its predecessor.
Fighting USB Gremlins
The micro iUSB3.0 addresses all eight significant USB audio gremlins that lead to poor quality computer audio in one fell swoop. It corrects signal balance, suppresses frame noise, suppresses packet noise, provides ultra clean power, eliminates ground noise, corrects impedance mismatch, eliminates USB jitter, and restores signal integrity.
The noise floor of the micro iUSB3.0 has been improved upon and is an astonishing 0.1uV (or 0.0000001V). This is at the edge of what is measurable even the mighty Audio Precision only just about manages to measure the micro iUSB3.0.
"The iFi Audio USB3.0 gave a richer and smoother sound with fine detail presented in a less forced manner. Bass with the iFi was mostly more powerful, there was also slightly better central focus," reports reviewer Clive at enjoythemusic.com. "If you use a USB connection with your DAC then you need to try the iFi Audio iUSB3.0."
"As it includes signal improvement technology, and the two pairs of USB ports, I would suggest that this item should be very near the top of your shopping list when searching for a better USB DAC power supply," notes Nick Whetsone, tnt-audio.com
Active Noise Cancellation Drawn from Military Radar Technology
Drawing from the military field (specifically the Thales Spectra radar cancellation system deployed in the French Dassault Rafale jet fighter), iFi adapted this technology to exclusively introduce the Active Noise Cancellation (ANC) audio power system. ANC technology is now a cornerstone of the iFi USB technology range.
Air defense radar is transmitted at a certain frequency. When the signal bounces off the aircraft, a receiver on board the aircraft picks up the signal and a computer analyses its base frequency/modulations, and an identical, but out-of-phase signal is then generated to cancel out the enemy radar signal.
By generating a signal identical to the noise signal but in the exact opposite phase, ANC completely cancels all the incoming noise. ANC is the perfect 'antidote' for power supply noise, which is the bane of USB audio. With ANC the power line is filtered for RF noise. The measured noise floor of 0.5uV (0.0000005V) is at the measurement limit of the Audio Precision equipment.
Using ANC, the background and inner resolution to recordings is no longer hidden. Sonics are much smoother, just like how good analog should be.
A Whole New Signal: REclock / REgenerate
The micro iUSB3.0 re-clocks, regenerates, and repeats the USB audio datastream. For any and every downstream DAC, REgenerate actually 'regenerates' an all-new USB signal via a precision master clock with the REclock technology to eliminate computer jitter. Music just flows better. It is cleaner, more accurate, and just like the real thing.
Recover the Unbalanced USB Signal with REbalance
The USB signal is inherently a 'balanced' signal. However, most USB signals become 'unbalanced' to some degree and contaminated by noise. By removing the DC offset and 're-balancing' the USB audio signal using REbalance circuitry, the signal is now perfectly balanced and noise-free.
USB3.0 Ultra-Speed 5.0 Gbps
iFi Audio products are at the cutting-edge yet also look to the future. The nano iUSB3.0 is USB3.0 standard and is backwards compatible with USB2.0. There is also the added sonic benefit from the USB3.0 platform which mandates better connectors, higher-quality cables, etc. Looking ahead, as audio transmission standards improve, with an ultra-speed bandwidth of 5.0Gbps, USB3.0 is future-proofed. It is 10x that of 480 Mbps on USB2.0.
Computer Audio IsoGround and On / Auto
The ground connection on a computer is contaminated with noise. The original micro iUSB cleverly solved this issue with IsoGround without falling foul of the USB standard (simply breaking the computer ground connection is NOT USB compliant and often results in USB connection problems). The new micro iUSB3.0 features not only this but also Auto / On USB power line options to further enhance the user experience.
USB Hub 2 X Dual Ports
With two sets of Dual-Ports, the micro iUSB3.0 operates as a computer audiophile-grade powered hub to serve two devices, such as DAC and HDD. This keeps computer audio is whisper quiet, as noise from one source does not contaminate another. With modern power-hungry devices, the micro iUSB3.0 is also Bus Charge 1.2 compliant, which means it is able to fast-charge phones, tablets, and even the phenomenal micro iDSD.
"The iFi Audio USB3.0 gave a richer and smoother sound with fine detail presented in a less forced manner. Bass with the iFi was mostly more powerful, there was also slightly better central focus f you use a USB connection with your DAC then you need to try the iFi Audio iUSB3.0."
- Clive, enjoythemusic.com
"As it includes signal improvement technology, and the two pairs of USB ports, I would suggest that this item should be very near the top of your shopping list when searching for a better USB DAC power supply."
- Nick Whetsone, tnt-audio.com