The Roland GA-212 combo amp is a custom built powerhouse. Featuring the COSM amp model Progressive Amp, the GA-212 offers guitarists original sound and simple control. Just twist the Drive knob and push the Boost button to go from clean to super extreme. The 200W through two 12″ speakers are perfect for medium and large stages. The GA series makes it easy to create whatever sound you are looking for with only two volume knobs, three tone-control knobs, presence and reverb. The Smart Channel feature will save your last changes to panel settings and you can recall one of four saved settings for all controls with a simple button push.