I am out of the amp business for the time being. I would buy another one.

Sound
Clear, clean, balanced, neutral, sound. The dsp stereo is a surprise. The effects sound good, but I have not had occasion to need them yet. Some demerits because I think the amp should be louder. Its 100 watts do not seem to be as loud as my kbr-m's 100 watts at keyboard input, but turning it up does not degenerate the sound in the least. It's probably just the difference in the cabinets and a little + & - applied between manufacturers. No big deal. No extraneous noise.

Features
Stereo dsp lets you hook right and left synth outputs into the sumo and hook amp #2 with a stereo out jack from the sumo to amp #2. Good expanded stereo effect. I used it with a roland kc100, and with a motion sound kbr-m successfully. The effects - 8 reverb, 2 chorus, flange, rotary, delay are cool - work through the dsp. 3 band eq. mc input. I like the handle and wheels - easy to tote around

Quality
It is well made.

Value
I got this for $249.00, a price match from $299.00, which I think is a good deal. This amp is a bargain - good value.

Manufacturer Support
Have not had the pleasure of needing support, but I assume that Alesis stands behind its gear.

The Wow Factor
Well, I must have wanted it, I bought it! Not a lot of… read more sex-appeal, except for the blue-lit 'Alesis' logo when it's turned on. It is a practical addition to my rig. I initially was going to get a Motion Sound km-12 [100 watts] to set up piano/rhodes in stereo with my kbr-m. I just could not make myself spend $500+ on it. I wanted a budget amp. So I auditioned this one at GC and a-b'd it with a Behringer kx1200 at the store. The sound was equivalent, and the Alesis won on looks, size and portability. Then when I figured out what dsp was and how well the stereo worked it turned out really well.

Musical Background:
active, gigging, semi-pro

Musical Style:
blues, r&b, gospel, jazz, read less