asynchronous USB digital input
Retrofittable digital input for the CD player. Whether playback from CD or other formats manages via the PC, you decide by pressing a button on only one device - now finally also for the analog converters TDA1540 or TDA1541.The retrofittable USB input consists of a decoder module and a switching module, which changes the input source between CD and digital input on the analog board in the CD player. The 14-bit module has an additional board docked to provide the 14-bit simultaneous data mode.
The USB input receives the data secured in asynchronous transmission, which means better quality compared to a simple adaptive data transmission. The formerly widespread S/PDIF transmission, whether electrically via an RCA cable or optically via Toslink, is ruled out because of its loss of quality. An asynchronous transfer driver to be installed is included, but Apple does not need it. For both sources, USB and CD, the connection to the analog converter is then done in non oversampling.
USB-in module, for TDA1540 14 Bit 258€buy
USB-in module, for TDA1541 16 Bit 198€buy
Installation example, Youtube Video (german language)