LiveFeed.
Aux Output assignable to the SP-6 Sample Player.
48 kHz and 96 kHz sample rate switch on the SL4 rear.
10-in 10-out USB sound card with any software support...
a power user from the first day you own the keyboard. The PSR-E403 can make even a novice sound like a pro! There are a ton of impressive features for very little money