MP3 compression  
        New audio files can be compressed into .mp3 format saving more than 10 time space on the hard disk drive respect PCM .
        MP3 standard deliver CD quality audio on any windows compatible sound card.
        MP3 is the world wide recognized standard for consumer , professional and internet music delivery and storage.

                                                                                                                     

 M-Peg2 compression  
        New audio files can be compressed into .mp2 format saving more than 5  time space on the hard disk drive RESPECT PCM.
        MP2 standard deliver CD quality audio on any windows compatible sound card.
        MP2 still be used for Satellite and Broadcasting .
                                                                                                                                                            
 MP4 compression  
        New audio files can be compressed into .mp4 format saving more than 20  time space on the hard disk drive RESPECT PCM.
        MP4 standard deliver CD quality audio on any windows compatible sound card.
        MP4 is the new Microsoft compression format included in all the newest Microsoft Multimedia Applications.
        MP4 is the standard choosen from Sony and other major companies for the new HI-FI and consumer products.
                                                                                                                                                            
 Linear Recording  
        Is the original standard used to records audio CDs
       Called also PCM , it is not compressed and uses a large ammount of hard disk space for each single track ( 70 mega each ).
        PCM standard deliver High quality audio on any windows compatible sound card.
        PCM is used for Mastering purposes .