Record your music from multiple sources and monitor your recording levels from your microphone or line input with Sony"s Hi-MD field recorder. The MZ-RH1 not only gives you the ability to record music from multiple sources, but takes playback sound quality to the next level. This compact device plays back MP3, Linear PCM, ATRAC and ATRACplus audio formats, and supports WMA and WAV formats with conversion to ATRAC3 format. ATRAC, Sony"s own format, provides higher sound quality at a small size. The MZ-RH1 is backwards compatible, so you can revive your old MiniDisc libraries as digital music by uploading music to your PC. Enjoy superb CD-quality sound whether you"re listening to music recorded at a live concert or from your own personal library. VPT Acoustic Engine & 6 Band Equalizer Dynamic Normalizer Recording Property Display Mode Self Recording Upload Feature HD Digital Amplifier Archive Data with Low Cost, 1GB Removable Hi-MD Media Up to 19 hours battery life playback and 10.5 hours recording when fully charged Store up to 1GB of data and/or audio files on one disc Compatible with Both Hi-MD and Standard MiniDisc Media Music and data transfer through USB Plays Back MP3/ATRAC/ATRACplus Audio Formats Supports WMA and WAV Audio formats with conversion to ATRAC3 Skip-Free G-Protection(TM) 7 Technology Store and transfer data, such as presentations, documents, spreadsheets and photos Up to 100x Transfer Speed Compatible with The Connect Music Store Power Requirements - LIP-4WM Lithium Ion battery (included), AC Power adapter (included). USB power charges NiMh battery and power PC connection only. Playback is not available when USB is engaged.