Tascam's CD-01U and CD-01U Pro are single-rackspace, slot-loading CD players designed for broadcast or recording studio use. They will play commercial CDs, CD-R/RW (12cm and 8cm sizes) and MP3 discs. The two machines differ only in terms of I/O and control ports: The Pro model has XLR balanced outputs with +20dBu into 150 ohms max level while the CD-01U has unbalanced RCA jack outputs capable of +6dBV into 1kOhm load impedance. Both have S/PDIF optical outputs and serial RS-232 control for AMX and Crestron system programming. The Pro adds an AES/EBU digital output and a parallel control port.