ifi micro iUSB3.0 USB Filter Review

[Dnix]

I currently only have the ability to test impedance on DC circuits. So mostly testing the effect of impedance on power delivery/voltage stability. So far, in my admittedly limited testing, higher impedance power outputs, tend to have more stable voltage when current draw changes.

EDIT: This also means, in a DC circuit where the current draw (and power consumption) never fluctuates, impedance in the circuit no longer becomes relevant as far as stable power delivery.

 

[gus0361]

Shoudn't this device be tested with a with a dac that is powered by a USB connection. From what I know the power supply is one of the main factors for noise in a dac and the USB input device doesn't have much if any effect on the performance.

 

[Sanlitun]

Shoudn't this device be tested with a with a dac that is powered by a USB connection. From what I know the power supply is one of the main factors for noise in a dac and the USB input device doesn't have much if any effect on the performance.

I made this same point a while back. I have this and use it as a 5v power source. It would have been good to have tested it with a USB powered DAC, or even one that is not galvanically isolated. As well testing/comparing ripple on the DC might have been interesting as well.

I use it on a Sony TA-ZH1ES as it requires the 5V. I don't feel it is lousy nor obsolete: https://www.audiosciencereview.com/...-iusb3-0-usb-filter-review.11284/#post-321619