Huge Sound, Tiny Package
I just purchased the AC-60 two days ago, after a long bit of reflection regarding my Jazz Chorus 77 -- a workhorse I've used since '87. While I play both acoustic and electric, I felt I needed a cleaner, more natural amp when playing my Taylor and Guild acoustics. The JC77 has been a great little amp, both for small club gigs and recording, but it wasn't designed for acoustic guitar. And because I already own a Fender Blues Junior, and a Vox AC-30 for electric guitar work, I went to my local music gear dealer, looking for a dedicated acoustic guitar am and ended up comparing two amps. My criteria was: a) It had to be small and reasonably light, and b) It had to be a dedicated acoustic guitar amp, that sounded great in as many applications as possible (i.e., studio, practice, live venue). So, I A/B'd it against the Behringer ACX-1000, for purposes of comparison.
The behringer was a little cheaper, a good piece larger, and a little heftier in amp specs, but the disparity in sound quality was immediately apparent and striking. Where the Behringer sounded flat, and lacking across the entire dynamic range, the Roland sounded rich and authentically 'acoustic'. I tend to use chorus quite a bit, and Roland produces one of the best you're likely to hear, and has for many years.
What I didn't expect was to hear so broad and rich a sound coming from two 6.5" drivers. Totally amazing. The feature set includes a second mic channel, complete with phantom power, so that you actually use the unit as a small solo sound system in smaller venues that might fit, say 50-75 people.
There are several patch jacks as well, so you can patch to a sub-woofer, or line out to a larger PA board.
Shortcomings: The onboard reverb is sub-standard, in my opinion, and is adjustable for depth (amount) only. To my ear, it's a 'room' sized reverb, where I tend to prefer large hall reverbs, mixed wayyyyyy back against the direct signal. Also, given the cheesy, ill-defined reverb, they should've provided an effects loop so that you could add your own effects -- but didn't. After a few minutes fruitlessly trying to dial in a decent reverb sound, I chose, instead, to go from guitar to a Microverb, and from Microverb out, to the input on the AC-60 guitar channel.
Bottom Line: Roland has many times over proven their ability to innovate and subsequently create quality products for bedroom players and world-wide tour-de-forces, alike. The AC-60, while targeted at the coffee house performer, is a true sleeper. In fact, it wouldn't surprise me in the least to see Jimmy Page in front of 20,000 fans using an AC-60 for the 12-string prologue to 'Stairway'. It sounds that good.