The TOS link module at the I/O terminal for optical digital signals has a high potential capacity. However, the majority optical digital output signals provided by current AV devices are of reduced power to save on the current flowing in the emitting diode. The resulting drop in the S/N ratio and increase in jitter can degrade in sound quality. In other words, the potential of the link module is not being fully exploited.
The VOB-102 was developed with the aim of improving sound quality by shaping and strengthening optical signals whose power has been reduced in this manner. This product can also function as an "optical digital signal splitter" when optical output from a second system is used. By connecting an MD recorder or CD recorder, it is possible to record via an optical connection.