Until I see one (the Fishman), and play through it, it's all speculation. I definitely take the blurb about not needing a sub as questionable. You have to understand that these things are primarily marketed to solo acoustic guitarists (look at all the ads, 9 out of 10 are acoustic guitarists singing) who don't even HAVE any need for sub lows... but they DO need good low mids (which I often feel lacking on the Bose stuff).

I am prepared to be proven wrong, but I seriously doubt that they will give a solid kick drum or low synth bass the kind of 'oomph' that a system with a real sub will, at least at higher volumes.

Truth is, get the volume low enough, and even 4" speakers can make a 60Hz tone. Of course, the audience (or you ) won't hear it if they are more than 3 or 4 inches away!

Mark Twain said 'There are three kinds of lies: lies, damned lies, and statistics.. To that I would like to add 'specifications'