Yamaha PSR-SX920 61-key Professional Arranger Workstation 2 Inputs A 1/8" auxiliary jack is

A 1/8" auxiliary jack is great for adding backing tracks

This effect rolls off the treble very slightly

or a Combination of Both

String Resonance

Beyond that

Yamaha PSR-SX920 61-key Professional Arranger Workstation 2 Inputs A 1/8" auxiliary jack isPowerful Yamaha Arranger with Premium Sounds and Features The Yamaha PSR SX920 is a powerful professional arranger workstation that will spark your creativity without exploding your budget. Loaded with content from Yamaha's flagship Genos2 digital workstation, the PSR SX920 serves up rich, immersive sound through its state of the art bi amplified Expansive Soundfield speaker system. Navigate quickly and easily using the bright 7 inch color TFT