2 entry, a dedicated acoustic guitar and a microphone or dedicated line.
Correction on every input with phantom power for microphone input
A reverb with general balance between the 2 inputs
A ring circuit in / out can serve as additional input line and works perfectly
A featherweight

UTILIZATION

Very simply, a master volume and correction on each channel. Simple and effective

SOUNDS

The sound is perfect. A sound, a microphone and standing before the music. The sound is clear, defined bass with good and sufficient power for a small set of friends (up to 100 people attentive without problem)

OVERALL OPINION

This amp is great. I've had it 5 years and I think never part with it.
FYI I also had a Roland AC60, and it has nothing to do, the sound appears tampered with, not natural, it seems less powerful because the distribution is more narrow and it weighs much heavier.
The EAR is a really professional product, a little expensive, but it seems to me justified.
Last comment, it really has no interest in electric guitar except with a Tonelab to troubleshoot at home.