Tubulus Libentus Digital Interconnect

A clear and detailed digital interconnect cable, with a realistic, transparent, open and width stereo image!

• High quality silvered copper conductors
• Solid core conductors
• Air insulation
• Handmade tube construction
• Very thick copper shielding
• High quality silvered plugs

Length 75cm = €109 apiece
Extra 25cm = €15


The TUBULUS Libentus Digital Interconnect is based on high quality silvered copper conductors. These solid core silver conductors are surrounded by mainly air, because (except for a vacuum) air is the best dielectric.

This air insulation is made possible by our tube construction, which can only be made by hand. The high quality silvered copper conductors are placed behind a very thick copper shielding.

The TUBULUS Libentus Digital Interconnect is available with high quality silvered RCA plugs (S/PDIF) or XLR plugs (AES/EBU), which are soldered with silver containing solder.

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

For right angle XLR plugs or custom cables feel free to contact us. info@tubulus.net

A high end digital interconnect cable may sound like nonsense. After all it’s just 1’s and 0’s it has to transport. Any 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 digital interconnect cable like the TUBULUS Libentus can make great improvements in sound quality.



  1. Alpha Audio

    The Libentus is a lively and neutral sounding interlink. Sound staging is deep and wide. Instrument placing is very good and the transparency is perfect. Sublow is very convincing and more importantly, also perfectly controlled. A nice, easy and very musical interlink which sounds much more expensive than it actually is.
    Alpha Audio 7/16/2016

    Original Review (Dutch)
    De Libentus is een levendige en neutraal klinkende interlink. Geluidsbeeld is diep en breed. Plaatsing is zeer goed en de transparantie is perfect. Sublaag wordt heel overtuigend weergegeven en belangrijker, de controle hiervan is eveneens perfect. Een fijne, gemakkelijke en zeer muzikale interlink die veel duurder klinkt dan dat deze in werkelijkheid is.
    Alpha Audio 16-7-2016

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