DS-42M 4x2
matrix digital audio toslink optical selector
DS-42
4x2 digital audio toslink optical selector
ADC-8700
SD card digital music recorder

USB DAC
USB digital to analog digital audio converter (USB DAC headphone amplifier)
DA-710
Digital to analog digital audio converter (DAC)
HRA-HT708xx-S3
Hi-Res Optical Audio Cable (7,000 cores)