Optical or coaxial cable: which one to choose for your audio system?

Optical or coaxial cable? When it comes to connecting a digital audio system, two of the most common options are precisely these. Both are used to transfer the digital signal between devices such as amplifiers, streamers, and DACS (Digital-to-Analog Converter), but they have substantial differences that can affect sound quality and the overall listening experience.

Optical cables use light to transmit the digital audio signal. This means they are immune to electromagnetic interference and eddy currents that can affect the electrical signal. However, the audio signal must be converted into light pulses before being transmitted and then reconverted into an electrical signal upon arrival. This double conversion process can introduce minimal latency and possible loss of information.
Coaxial cables, on the other hand, transmit the digital signal in the form of electrical pulses through a shielded center conductor. Due to their construction, they can offer higher bandwidth and lower signal distortion than optical cables. In addition, many Hi-Fi enthusiasts believe that the sound obtained with a coaxial digital connection is more natural and musical than that obtained with an optical connection.

For those seeking a more faithful and immersive audio experience, the coaxial connection is often the best choice. The coaxial connection transmits the audio signal more directly and with less conversion than an optical cable, allowing for a more natural and detailed sound, which is particularly appreciated in stereo Hi-Fi systems. In addition, coaxial cables support more data than optical cables, reducing the possibility of compression and improving sound performance.
Many high-end DACs and amplifiers offer higher quality coaxial inputs than optical inputs. Even the best audio streamers support the coaxial digital connection to ensure a more stable signal free of jitter. Finally, unlike optical cables, which can experience light leakage and reflections within the cable, coaxial cables offer a more linear and reliable transmission.

Although coaxial cable is often preferred for a stereo Hi-Fi system, there are situations where an optical cable may be a viable choice. If you need to connect devices with electrical isolation to avoid ground loops and hum, if your system is subject to strong electromagnetic interference, or if you are using a home theater system where the difference in quality between the two types of connections may be less obvious, then optical cable is an option to consider.

If you have decided to opt for a coaxial digital connection, it is essential to choose a high-quality cable to ensure the best possible transmission of the audio signal. At Ricable , we offer coaxial cables designed to ensure optimal digital signal transmission, with the highest quality materials and advanced shielding to reduce interference. It is critical for this type of connection to have the correct impedance of 75 ohms, and Ricable cables are designed precisely to ensure this essential technical specification.

The choice between an optical and coaxial cable depends on the specific use required. If your goal is to get the best possible sound in a stereo Hi-Fi system, the coaxial digital connection is almost always the most suitable choice because of its greater musicality and sonic fidelity. If, on the other hand, you need to avoid interference or connect electrically isolated devices, optical cable may be a viable alternative. Investing in a quality coaxial cable can make all the difference in listening to your Hi-Fi system. Choose the best for your amplifiers, streamers, and DACs, and enjoy superior sound with the coaxial digital connection.