The Roland GA-112 guitar combo amp is a powerhouse. Featuring the COSM amp model Progressive Amp, the GA-112 empowers guitarists with original sound and intuitive controls. With the twist of the Drive knob and push of the Boost button, you can go from clean to extreme. 100W through a 12" speaker is perfect for rehearsal, studio or small to medium live venues. No matter what your sound is, the GA series make it easy to find with simple controls. It features two volume knobs, three tone control knobs, presence and reverb effects. The Smart Channel feature always saves your changes to panel settings, and you can recall one of four saved settings with a simple push button.