I've played through a Fishman Loudbox and really liked it. I believe it has a
lot to offer. I can't use an amp like that because my job is to play my acoustic
with as much presence as possible without drowning out my partner's D-35
(which is handicapped by the mic setup).
So I'm always telling the sound guys to make him as loud as they can, and
then
to bring my signal into the mix. That works because my setup has plenty of headroom.
If I had an amp onstage behind me, he would not be able to hear his guitar even with
a good monitor. I play bass with my little Roland CB60XT, and sometimes he complains
that he can't hear his guitar because of that. And I keep the stage volume low for this
reason, and let the sound man mix it by means of the XLR out... *shrugs
So I don't really need an Acoustic amp. But I'm fascinated by them. If I played my
acoustic in a band with drums and keys, bass, and another guitarist, I might feel
differently and get one of those. But right now, I don't need one and since I play
acoustic, electric, bass guitar and djembe, I'm happy not to drag in another amp.
I used to play my bass through a Fender Bassman Compact 1/15, I think it was about 120 Watts.
But I sold it because Fender amps aren't happy running at 3... And the Roland sounds just
fine at low levels. For me, that's really important.