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audio. Therefore, some A/V devices are designed only with coaxial output instead of optical
output.
2)
Optical Cable
Optical SPDIF, also named as Toslink, is a technical standard early developed by TOSHIBA. It
is named by T Link. It has a mark of OPTICAL. So far, almost all the digital A/V
equipments are equipped such interface. Once Toslink optical interface was widely used in
media players such as CD, LD, MD, DVD. Toslink transfers digital audio signals by optical
fibre. Interfaces are mainly divided into two kinds, one is standard interface for home appliances,
and another is mini-Tosilink for portable devices such as CD player. Optical transfer can realize
electric isolation, prevent the digital noises from ground, and help increase the SNR of DAC.
The time base error, however, is an important factor that affects the timbre. As the optical
signals needs two conversion between emitter and receiver, it will produce serious time base jitter.
Therefore, such kind of optical transfer though obtains clear sound, it seems to be lack of lingering
charm and vitality because of a heavy digital sense.
3)
HDMI embedded Digital Audio
