I have posted a short review of the Intona Ultimate usb cable on an audiophile forum in Hong Kong earlier this week :
http://www.hiendy.com/hififorum/forum.php?mod=viewthread&tid=121379&extra=page=1
It's in Chinese. Sorry that I am too lazy to translate it fully to English. Please use google translate if you have interest.

Let me summarize my views in a few lines :
I am a nosy CAS audiophile for many years and have auditioned nearly all the mid- and top-price usb cable in the market (except those which are unavailable in Hong Kong such as Kuro or MasterBuilt).
A CAS audiophile friend of mine bought an Intona Ultimate online a month ago. I went for a listen, pairing it with his Holo Spring level3 dac and also a set of Chord Blu2+DAVE. My jaw was on the floor within minutes.
When Intona got an official HK dealer last week, I went to its showroom for a more detailed audition with friends, using the Ultimate on a SGM EVO server and two DACs ; Totaldac Six and Aqua Audio Formula xHD.
We were totally convinced.
The character of Ultimate can be summarized in 4 words : Accuracy ; Resolution ; Energy ; Agility.
There may be other more expensive usb cables that have better bass, richer midrange ...etc but the Ultimate gives higher fidelity.
IMHO the Intona Ultimate usb cable is the current champion.
http://www.hiendy.com/hififorum/forum.php?mod=viewthread&tid=121379&extra=page=1
It's in Chinese. Sorry that I am too lazy to translate it fully to English. Please use google translate if you have interest.

Let me summarize my views in a few lines :
I am a nosy CAS audiophile for many years and have auditioned nearly all the mid- and top-price usb cable in the market (except those which are unavailable in Hong Kong such as Kuro or MasterBuilt).
A CAS audiophile friend of mine bought an Intona Ultimate online a month ago. I went for a listen, pairing it with his Holo Spring level3 dac and also a set of Chord Blu2+DAVE. My jaw was on the floor within minutes.
When Intona got an official HK dealer last week, I went to its showroom for a more detailed audition with friends, using the Ultimate on a SGM EVO server and two DACs ; Totaldac Six and Aqua Audio Formula xHD.
We were totally convinced.
The character of Ultimate can be summarized in 4 words : Accuracy ; Resolution ; Energy ; Agility.
There may be other more expensive usb cables that have better bass, richer midrange ...etc but the Ultimate gives higher fidelity.
IMHO the Intona Ultimate usb cable is the current champion.
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