I was going to try the Sumo tonite on stage..so I ran some trials in my studio..I made one mistake, I ran the Sumo side by side with my 20 year Roland Keyboard 60 amp...
In the Alesis manual the Sumo is rated at 140 watts..8 0hms..

The Roland is 60 watts..

At 1/3 volume the Roland is louder than the Alesis set at 3/4 volume..

I wanted a light , powerful amp with mixer and effects..so I would not need to carry a mixer for small jobs..

The Alesis has a very limited effects section , and I could not find anything to really please me..there was one setting that was just OK..

My decision, "Dump" the Alesis..it is overated in the power dept, and lacks quality..

I tried another "modern" instrument...and it can't compete with the "relic"..