Tubulus Libentus USB Cable

Very musical and detailed USB cable, with a realistic open and width stereo image!

• Large high quality copper conductors
• Solid core conductors
• individually shielded power and audio conductors
• High twist rate EMI cancellation
• 2 layers of effective shielding

Length 75cm = €149 apiece
Extra 25cm = €15



The TUBULUS Libentus USB Cable is based on large high quality copper conductors. These solid core conductors are twisted with a high twist rate for the purposes of cancelling out electromagnetic interference (EMI). To preserve signal integrity the power conductors and audio conductors are individually shielded. With this construction there are 2 layers of effective shielding separating the power and audio conductors. An overall braiding completes the shielding of the TUBULUS Libentus USB Cable.

TUBULUS Libentus USB cables are hand crafted with love, expertise and devotion with no excess decoration or luxury packaging and therefore true value for your money!


A high end USB cable may sound like nonsense. After all it’s just 1’s and 0’s it has to transport. Any USB cable can do that. But those 1’s and 0’s have to be transported by a bunch of electrons traveling through a wire and electrons don’t know if they are ‘analog’ or ‘digital’. In fact, all electrical signals are analogue.

However, the digital signal is different; it is a pulse train, a square wave instead of a sine. But a perfect square wave doesn’t exist, because transition from one to zero requires time. So there is always a rise/fall time and the edges of the square wave will be rounded. In fact the square wave is a kind of trapezium with rounded edges.

Depending on the quality of the cable, the corners of the square wave will round off to a greater or lesser degree and the “flat” portions of the wave will become uneven as well. Small changes will make it harder for the receiver to detect the exact moment the rise or fall is happening. This will induce jitter. And if the changes become too big, the receiver will not even be able to reconstruct the logical 1’s and 0’s properly.

This is why a high quality USB cable like the TUBULUS Libentus can make great improvements in sound quality.

For custom cables feel free to contact us. info@tubulus.net
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