2 independent channels each have Crane's own EQ 5 votes, his control of feedback and its own reverb.
The second channel also has an XLR input as well as the jack of high quality that can connect a microphone and other song or just any source amplifiable
On the rear panel found moultes notement out with an XLR output to go to a console / mixer or another with the possibility of assigning the preamp upstream or downstream of the amplifier.
There are also all inputs / outputs for adding additional speakers, a footswitch and effects
The configuration for playing solo or with a mixture of two guitars or guitar / voice or another is very easy and everyone can independently adjust its output level, the reverb and feedback thus avoiding feedback and other problems in the balance of his
The equalizer is precise and very clean for a proper setting, which is played in folk or nylon
I've never needed the manual, external connections are obvious and well marked on the amp
I own this amp since 2000, I connected a lot of different guitars (such as various electros Art and Lutherie, Martin, Godin, Gibson) and adjustments made to allow a real character of each instrument.
I currently play with a Godin ACS nylon top and made neutral can make it sound perfectly (with a chorus pedal ... it was the sound of Sting "Fragile")
The only small downside is a slight hiss that disappears when you play, and can even remove a Noise Gate.
7 years since I use it, not a failure or any problem
It is very well finished, strong ... but a bit heavy (it is not the sound card and is only better)
I tried a Fender Acoustasonic who had not convinced because too dry because of its HP 10 "
the price / quality ratio is really great interesting for an amplifier Made In USA
SEA is a purchase I do not regret and I do it again with eyes closed (but open ears)