We audiophiles are restlessly itchy and many of us got OCD in tweaking our hifi components, even the very top/hi-end ones.
For example, the Taiko Audio SGM Extreme server is IMHO the best CAS server in the market, yet we have been talking about ways to further improve the overall sonic performance.
There is recently a lot of discussion about that on the last several pages of this WBF thread :
https://www.whatsbestforum.com/threads/taiko-audio-sgm-extreme-the-crème-de-la-crème.27433/page-33
Very few tweaks/accessories can get approval from Emile, designer/boss of the Extreme server but the Intona USB Isolators 2019 versions are some of the rare exceptions.
https://pro.intona.eu/en/products/
Intona launched similar isolators several years ago. They were for industrial but not audio use. The chassis was made of plastic and although sonically they worked, there were often incompatibility issues.
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The
new 2019 models are much much nicer and aim at audiophiles.
Here are the USB2.0 5kv model (left) and the USB3.0 model (right) :
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They now got a metallic chassis.
I had a glimpse of the interior. There are some EMF absorption pads sticked onto the inner surfaces of the metallic chassis.
The circuit boards are totally diff from the old models. There are now actually 2 circuit boards, the smaller one sitting on the bigger board.
Also, please note that there is a mini-USB socket situated next to the usb output on the new 2019 models.
It is for users to give the Isolator an external 5V dc supply. The occasional incompatibility issue of the old models is partly due to the 5V current becoming smaller after going through the Isolator. The new 2019 models solve the problem this way.
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In Hong Kong, both Intona and Taiko Audio are carried by the same dealer Volent Audio.
I tried the new Intona Isolators on the Extreme server.
They worked and gave sonic improvement!
However there is a small compromise in dynamics.
Can this be solved?
Yes of course!
It was then given an external 5V dc via the blue colour dc cable.
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A PLiXiR Elite Series 5V/2A LPS was used.
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It was like Popeye being fed spinach, all the micro- & macro-dynamics returned.
Fabulous!