Hey guys. I tried an Aura at a Fishman booth one time (IBMA Convention in Nashville). I'll be honest with you. I was really impressed. Especially when he did the ON/OFF comparison, like on the website (
http://www.fishmanaura.com). It really did make a difference as drastic as the clips on the site suggest.
HOWEVER, I've heard from a couple of dealers, whose names will not be mentioned, that they have a hard time getting good results with a lot of guitars. They both told me the same thing - that it is almost like they "pick" guitars to show people to get 'em hooked, and then people try it with their own guitar and don't get the tone they wanted. Something to keep in mind - this was advice from people that making money selling the thing. Also keep in mind that they weren't telling me not to buy it, either. It just happens, I guess, that the result depends on the nature of the guitar being used. As to what causes this, I have no idea. Like I said, the only time I tried it, I really was blown away.
If I could suggest something, I would say try to find a dealer relatively close to where you are staying and take your guitar with you. Either that, or try to order one from someplace with a money-back guarantee.
If you don't have a pickup, however, you're obviously in a little different situation. My advice to you is to check out
http://www.dougyoungguitar.com/pickuptest.htm and
http://www.fingerpick.com/pickups.htm. These demos can help give you an idea of what your setup could potentially sound like. NOTICE that Doug Young's pickup clips are NOT EQ'd!!! They have quite a bit of tone-shaping potential, they are just trying to compare the natural pickup response to the actual acoustic tone. I think there's also a link to an EQ'd page somewhere on there though. Hope this helps you guys out a little.
I'm currently getting Dave Enke of Pick-Up the World to custom-install a Dynamic Duo system on my Legacy Premier A320C. I'm pretty confident that the results are going to be great - check out the UN-EQ'd CLIPS on the Doug Young site! It sounds almost exactly like the mic'd tone! I'm excited about it. In just a few days, when I get it back, I'll post how it turns out. Glad to share what little I know, and again - Hope it helps all of you out! God's blessings to you all!
Jonathan Renn