Samson Expedition XP40i Rechargeable Battery Powered PA 6-inch woofer with 1-inch high frequency driver 40 watts of power from a lightweight Class D amplifier Channel 1: XLR-1/4 inch combo line or mic level input with phantom power Channel 2: 1/4 inch line or microphone level input 1/8 inch stereo aux input allows for stereo line level signal