The Panasonic DVD-RV21 is a DVD/Video CD player that plays DVD-Video, Video CD, and CD discs, including MP3 CDs, audio CD-Rs, and CD-RWs. Key specs include an optical digital output for various audio formats, RCA, S-Video, and component video outputs, and support for Region 1 DVDs. 

Playback and supported formats
Discs: DVD-Video, Video CD, CD, MP3 CDs, audio CD-Rs, and CD-RWs.
Region: Region 1 DVDs. 

Audio
D/A Converter: 96kHz/24-bit audio D/A converter.
Digital Output: Optical digital output for Dolby Digital, DTS, and PCM, with selectable output at 48kHz or 96kHz.
Other Features: Dialogue Enhancer, Advanced Virtual Surround Sound, and a subwoofer output. 

Video
D/A Converter: 27MHz/10-bit video D/A converter.
Other Features: High Speed Smooth Motion Scan (up to 100X) and video black level control. 

Connections
Video Outputs: RCA, S-Video, and component video.
Audio Outputs: Optical digital output, and a set of A/V outputs.