In Stock. 45 Day Lowest Price - 100% Satisfaction Guarantee. The Alesis Sumo amps not only sound great, but they look great as well, and with innovative features like built in effects (including Leslie simulator), stereo link (for true stereo operation), and a built in handle/wheels combination, this amp is hard to beat! The Sumo 100 features 100 watts of FAN COOLED power, a heavy-duty 12" speaker, and a true compression horn driver for plenty of headroom and great sound.