Over the past couple of years, the iDAC and iLINK and nano iDSD, have been shipping a Blue USB 2.0 (A>B) cable.
This cable under went some quite thorough testing and it adheres very well to the 90ohms impedance parameter.
Given we have only had customer comments expressing their surprise at "Little Blue," sonically speaking, you can rest assured that it delivers the goods.
Hence, for the micro iDSD, it will ship with AT LEAST the same "known good" USB cable but in A>A version.
First: That cable is perfectly fine for me, as long as i dont have to use an adapter I am ok with that.
Second: if ifi says the iPurifier is not needed, thats fine for me to. I was going to get one but now I save the money and spend it on music.
It takes a lot for a company to say that the sound quality is good enough already with the "standard" package" besides having these products for sale. Other companies would probably try to marketing and sell everthing and say its greatly improving the sound even if its not. If ifi is confident the micro iDSD as a standalone product will perform to the highest standard than thats a very purist and honest approach.