I am very very impressed.
Initial impressions - this sounds a lot like my Model II.
Out of the Box
I can certainly imagine running with the two channels with a dynamic microphone (I've tried my Beyerdynamic M88) and my Larrivée with L.R. Baggs iMix NoCut, or my Morgan with Fishman Under Saddle Transducer with PickUpTheWorld Quackbuster or my Larrivée Classical with Fishman Under Saddle Transducer. That is - all the acoustic guitars I've tried sound fine. That is - even without the T1®.
This would also make a great amp for an electric jazz guitar. I've tried several (no Preset) and it's wonderful.
Side-by-Side the Model II
In a space up to say as small coffee shop (800-1000 square feet) I would be just as likely to take the Compact as the Model II. I am working in a space a little bigger than this, and if competing with a noisy crowd or coffee grinders, I'd probably prefer to have the Model II.
I was telling someone last night - for an acoustic duo for concerts up to 100, I would probably prefer two Compacts over sharing a Model II with a T1®.
Sure you can to do more with a Model II and T1® but within the realm of the smallish venue, I think Compact will be just terrific.
Within say 25' you have to push the Model II hard to get it to seem louder than the Compact. I was surprised at this. As you get farther away, the Model II seems to maintain its volume better. This is no surprise.
When I push the Compact it does seem to clip or compress, but you have to be running LOUD to make this happen.
This is important to me. The PorchBoard works. It's not as deep a thump, but it would be fine in a small acoustic concert setting. Interestingly, this is when I use the PorchBoard most. Anything bigger and I am probably working with a rhythm section.
The connection: Channel 2 - Guitar in ¼ inch jack and PorchBoard in one side of the RCA inputs.
I'm going to try a few other things, (e.g. Electric Guitar with pedals, Condenser microphone with external phantom power)
Anything else I can try for you?