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Digital cables

Digital audio cables are the most commonly used if we are talking about interconnecting devices such as current TVs with speakers to improve sound quality, or designing our own hifi sets by connecting components such as the integrated amplifier, network audio player or CD player, etc., together.

Although optical and coaxial digital connections are currently the most commonly used because of their good transmission and quality ratio, within digital audio cables we also find alternatives such as HDMI, USB or Ethernet, with different adaptations but with the aim of guaranteeing sound transmission without interference or external noise.

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What is a digital audio cable?

Digital audio cables are the most commonly used if we are talking about interconnecting devices such as current TVs with speakers to improve sound quality, or designing our own hifi sets by connecting components such as the integrated amplifier, the network audio player or the CD player, etc., together.

Although optical and coaxial digital connections are currently the most commonly used because of their good transmission and quality ratio, within digital audio cables we also find alternatives such as HDMI, USB or Ethernet, with different adaptations but with the aim of guaranteeing sound transmission without interference or external noise.

Difference between a digital optical and digital coaxial audio connection

Digital optical and digital coaxial connections are used to transfer audio signals from a DVD player to an audio/video (A/V) receiver or digital recording device. The audio signal is maintained in a digital format using either of these cables. 

The differences between the two connections are as follows:

A Digital Optical connection uses a fibre optic cable. The digital audio bit stream is transmitted using pulses of light through this optical cable.

A Digital Coaxial connection uses a cable that has RCA type connectors. This digital coaxial cable is different from the standard RCA cable because it is designed to handle the wider frequency bandwidth of the digital audio bitstream.

Digital audio interface types and connectors:

ADAT

The ADAT (Alesis Digital Audio Tape) audio interface is the standard for digital audio transfer over optical cables. ADAT professional audio cable types can transmit up to eight channels of digital audio.

S/PDIF

S/PDIF connectors transmit audio over a coaxial cable or an optical audio cable. A coaxial cable is similar in performance to an optical cable, but they are less common. Coaxial cables use RCA connectors, but are not interchangeable with analogue RCA cables. S/PDIF connectors are typically used to transmit a stereo mix from an audio interface to a pair of speakers.

AES/EBU

An AES/EBU optical audio cable uses an XLR connector to transmit an optical S/PDIF signal. These digital audio cables are not very common, but can be found on some CD and DVD players, as well as other more expensive equipment. They use the same XLR connectors as a microphone cable, although they are not compatible.

BNC

BNC (Bayonet Neill-COncelman) connectors were originally designed for military use, but can now be found on many audio and video equipment. BNC connectors use miniature coaxial cables and allow multiple digital devices to be synchronised in large sound studios.

TDIF

TDIF (Tascam Digital Interconnect Format) is a digital audio interface developed by Tascam that allows unbalanced digital audio signals of up to eight channels to be sent or received. TDIF digital audio cables can connect up to eight inputs or outputs from one compatible device to another with a single cable.

For personalised advice and even to test the most suitable cables with your hi-fi equipment, please contact us without obligation.

Frequently Asked Questions

What are the most common types of digital cables?

Some of the most common types of digital cables include HDMI (High-Definition Multimedia Interface) cables, USB (Universal Serial Bus) cables, optical audio cables and digital coaxial cables.

What features should I consider when buying digital cables?

When choosing digital cables, it is important to consider the length required, compatibility with the devices to be connected, the version of the standard (such as HDMI 2.0 or USB 3.0), the build quality and the materials used.

Can I use adapters to connect different digital cables?

Yes, adapters are available to allow connection between different types of digital cables. For example, an HDMI to DVI adapter can be used to connect an HDMI device to a monitor with DVI input.

How can I ensure a stable connection with digital cables?

To ensure a stable connection, it is advisable to use good quality cables, avoid bending them too much and make sure they are firmly connected at both ends. It is also important to check that the devices are compatible with each other and are configured correctly.

For personalised advice and even to test the most suitable cables with your hi-fi equipment, please contact us without obligation.