The optional PaAS is a high-fidelity speaker/amplification bar specifically designed to connect directly to the Pa3x (61 and 76 key models). Useful for both home and on-stage monitoring, the PaAS uses KORG's "Easy Connect" system: no additional support, no cables, no power supply needed to deliver a crisp and clean full sound. System 3 Channel Amplification System Power 2x20 Watt (Middle/High Frequency) + 1x40 Watt (Subwoofer) Speakers 5 Speakers: 2 Middle range (80 mm) + 2 Tweeters + Dual Coil Subwoofer (130 mm). Cabinet Aluminum case with Bass Reflex System Connectivity Simple connection. The power and audio signal from the Pa3X are via a special connector that is automatically attached to the keyboard. No additional cable or power supply is needed. Dimensions (W x D x H) 992 x 173 x 137 mm / 39.06" x 6.81" x 5.39" Weight 5.7 kg / 12.57 lbs.