Sound:
The sound that comes out of this amp is superb (at least for my tasts). At first, I thought the 15 inch speaker would sound muddy or heavy but the tweeter gives me all the highs I need. This baby has punch when you need it.

"A great practice amp with a pure sound that can also be used for small gigs or as a separate monitor with a large PA system."

Feature:
Has all the features I need. I can hookup the drums,a guitar, a keyboard and mike my Zildjian cymbals if necessary. I also am sending the lows to a JBL self powered sub.

Quality:
Based on my limited experience with Marshall's Crates, Hartke's Peavey's etc. I would say this is right with them. Very solid.

Value:
I would buy another without hesitation.

Desirability:
It's comparable to all the top-rated Combo-Amps.

Sound:
I use it for my Roland Drum set and it works great. I also input sound from my computer thru the RCA connections and the sound is awesome. Sounds like a live performnce.

Ease of Use:
Very easy to use even for an old coot like myself who's just getting into electronic drums after playing acoustics for years.

Support:
I dealt with SDM because the first unit did not work out of the box. They promptly shipped me a replacement unit the same day and issued an RMA after I was satified with the replacement.

Overall:
I plan on keeping this and passing on to my son. I would buy another.

"Beautiful sound and doesn't produce feedback when the mic is near. I play my tenor sax through it and it sounds full and clear."

Feature:
Didn't need extra accessories except a stand. Fills a large room and doesn't distort.

Quality:
Proffessional look, casters,more power than I need but sturdy quality. It does weigh almost 80 lbs.

Value:
I got what I paid for.

Desirability:
The first time I heard an instrument pplayed through it.

Sound:
More than serves the purpose. I'm very impressed with the quality of this clean(no white noise)amp. Easy to use and pack a punch with clarity. No bells and whisels just a clean powerful sound.

Ease of Use:
Read the brief manual and adjust to your taste.

Support:
Good service from the vendor. Shipped in five days and now problems.

Overall:
I just recieved it a few days ago. So far I'm very satisfied and don't think I'll need another amp for several more years.

"Don't read this uless you want the best."

Feature:
No accessories but the XLR imput and Outputs are a good addition.

Quality:
It is very well built with reinforced corners and excellant exterior. Treated like the high quality amp that it is, it should last indefinately.

Value:
Worth the money.

Sound:
The KC 550 is everything it is advertised. The sound quality and range are excellant. I use it with a MIDI equipt Accoridian and a 12 string Guitar. It also works well with a voice microphone. The sounds are very good at all ranges and volume levels. It does not have the Hum or feed back I have become use to an other ampilfiers.

Overall:
I choose this product because I thought it was the best available and still do. If this were lost or stolen I would buy the same Model.