The DN-C550R is a professional dual drive CD-R and CD-RW recorder. It features both a CD playback drive and a CD-R/CD-RW record and playback drive, housed in a single unit. The CD playback drive has a built-in HDCD decoder, which provides improved fidelity of HDCD-encoded CDs. A sampling rate converter allows the digital input and recording of material that has a sample rate of 32 or 48kHz.