Okay okay okay - I give up - you win :)   The product is the best! - buy it! - but there might be delays as the entire chip industri is overburdened for the time - so next tape role is in late september and maybe later.     If you want my answer to your "bold" question - which I know...

Seams to be more a mather of religion and conspiracy theories. :)   But great that you think the USB isolator does so much more - and if you believe it enough it's the true.   Unfortunately the first batch is almost sold out - maybe you (LeePerry) could wait claiming any more great...

Hi Leeperry,   The ADUM4160 is just a low cost implementation of a USB isolator chip and does not regenerate USB clock or remove jitter on USB clock. To control the direction of data on USB you need to look for a special state on which you change direction. To find the state you need to...

Hi LeePerry,   Thanx for your support, it is great to help other audio users with the same problem as I had - The ground looping noise.   I did not see the scope pictures before - great study and thanx for pointing me to that discussion.   As you can see the noise is 17mV when...

Hi Cobaltmute,   Actually that is good with 50mv noise on the USB power from 0-20MHz.   It all depends on where you measure - if that was the rail power for DAC it would have been terrible as you state. If you use 24bit and line signals of 100mv each bit is around 6nV (0.000000006V)  ...

Hi All,   Here is some info to the ground looping problem heard as humming noise, bas distortion, etc.:   Quality USB/SPDIF cable. A quality cable USB/SPDIF will not solve the degradation of sound when using an USB->DAC or an USB->SPDIF adaptor. The problem is that a small difference...

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Hi Halbyrd,   I have done the same research as you have done - trying to avoid the ground loop between PC and Sound Amplifier:   What I found was that the SPDIF and the optical SPDIF called toslink both do not support more than 2 channels in comercial amplifiers. So that was a nogo for...