May someone point me to a HW brand (sound card) who deals with WASAPI Exclusive 24 bit & 3 byte aligned I/O. Or someone may reports, how my evaluation SW version works using the 24 / 3 format and drops me a line on support @ O;) Best would be a sound card supporting a SPDIF I/O stream O:) Remark: The miniDSP USBStreamer is already known. Best regards Hanspeter Widmer support@xxxxxxxxxxxxx http://www.hpw-works.com <http://www.hpw-works.com/>