Just put the instrument in the e-Sax, and e-Sax reduces saxophone output to a whisper at approximately -25dB. The acoustic lining material absorbs much of the sound whilst maintaining the full tonal characteristics of your instrument.
This natural sound can be enjoyed through the headphones - performing on your own or with backing tracks and play-along CDs.
e-Sax comes with a connecting cord, which will facilitate interactions with PC, MP3 players, or recording devices, so immediately after your purchase, you can enjoy Music Minus-one or a play-along recording (eg. Jamey Aebersold) with its 1/8 audio-in jack.