NUX AC-80 acoustic guitar amplifier, 80 watt, rechargable battery, 6.5" woofer + 1" tweeter, 2 channels, BTThe NUX Stageman II rechargeable amplifier is the perfect companion for an acoustic electric guitar when you want to be able to perform anywhere and be heard loud and clear without having to haul around a bunch of gear. With a large capacity lithium battery, the Stageman II is ready for as long as 4 hours outdoor performing for any musician. The Stageman II has 2 channels and both are optimized for acoustic guitar and microphone inputs respectively.