The MOBILE AC: Acoustic Chorus Battery-Powered Amplifier from Roland is optimized for acoustic guitar and designed to travel. It features a 15-hour battery life on six AA batteries. It also features stereo chorus, reverb effects, portable audio and microphone inputs.\r\n

\r\nThe MOBILE AC has 1/4' inputs for guitar and microphone with independent volume controls for each. The two 4-inch speakers can create a spacious sound with the addition of the Wide push-button effect. This can also enhance the built-in chorus and reverb. The Tone knob acts as a brightness control, adding presence as it's turned clockwise. The MOBILE AC also a third input, with dedicated volume control, for connecting a portable media player.\r\n

\r\nThe MOBILE AC includes batteries and a carrying strap. An optional AC adapter is sold separately.