Acoustic A20 amp

I bought an Acoustic A20 amp last week on sale at Guitar Center. It was $50 off list price plus they gave me $75 trade in for my old Traynor amp. The Traynor was a good guitar amp but not so good for harmonica. So far I really like the A20. It is designed for acoustic electric guitar and microphone for singing so my Shure SM 58 mic plugs right in without an impedance adapter. It is hard to evaluate an amp when you are playing a harp, so I lay a Jam Man mp3 speaker on a table and lay the Mic 3 or 4 inches away and play some pre recorded harp and other things into the mic while I adjust the amp and stand back to listen. I think it has a very good acoustic harp sound. I don´t play blues and didn't try over driving the Mic. I doubt it would work for that, but for my sound it's great. It also has jacks to insert an effects pedal. I hooked up a Digitech RP and it worked fine. This is a better rig than the  Roland Micro Cube I've been using, which isn't a bad little amp but it lacks power and depth of tone due to it's small size  and wattage. I plan on using the A20 for gigs next month and will try to remember to update this review. At 22 pounds it is as much amp as I am willing to lug around plus mic, cables, stand, and harps. It has an output for patching into a PA if you need to get really loud. 

www.guitarcenter.com/Acoustic/A20-20W-Acoustic-Guitar-Amplifier.gc