Stageman II AC-80 is a unique and comprehensive amplifier and vocal PA for acoustic guitarists. Mains or internal rechargeable battery operation offer freedom and flexibility for performance anywhere. The 80W amplifier drives a custom 6.5" woofer paired with a 1" tweeter for a powerful full-range output. Independent channels for guitar and microphone are conveniently positioned on the top panel for the angled cabinet, each with controls for gain, 3-band EQ, effects and reverb. Deeper editing and extra features like Impulse Response profiles are accessible via Bluetooth using the free-to-download Stageman mobile app. Bluetooth can also be used for audio streaming of tracks to play along with. An internal looper, drum machine and effects can be edited in the Stageman app and triggered from foot switches connected at the rear panel. Aux input, send/return loop, line output and DI output complete the rear panel audio connections with a USB port for firmware updates. In summary, Stageman may be the acoustic amplifier to satisfy almost any performance situation.Power supply: Internal battery or mains (28Vdc 4A adaptor included)vbCrLfRated output power: 80W (40W battery operation)vbCrLfBattery: Li-ion rechargeable 5000mAhvbCrLfInput impedance : instrument: 1.1M ohmvbCrLfInput impedance : aux/line: 3.3k ohmvbCrLfInput impedance : mic: 100k ohmvbCrLfInput impedance : return: 5M ohmvbCrLfWoofer: 165mmØ (6.5") custom drivervbCrLfTweeter: 25mmØ (1") dome tweetervbCrLfFrequency response : ±3dB: 50Hz - 20kHzvbCrLfBattery life: Up to 4 hoursvbCrLfCharge time: 6 hours @ 1AvbCrLfDimensions: 328 x 310 x 280mmvbCrLfWeight: 9.87kg