http://www.serato.com/scratchlive/rane-sl3
The new SL3 hardware has a number of improvements including:
* USB 2.0 high speed audio interface.
* Improved dynamic range (104 dB).
* Improved audio performance (24-bit converters).
* Higher output improves ability to easily match levels of various source types.
* Galvanic isolation prevents computer noise from interfering with audio path.
* Aux Input for Live Mix Recording or LiveFeed.
* Aux Output allows use of the Sample Player as a Virtual Deck.
* Aux Output opens the door for future expansion and creative con?gurations for DJs and electronic musicians.
* High-grade phono preamps upgrade the performance of most mixers.
* Software switchable Direct Thru connections for simplicity.
* Independent Line / Phono-level selection for each input for greater ?exibility.