After having auditioned the PAS myself in an actual gig venue, I concur that the PAS's 'claim to fame' would have to be its even 'coverage' throughout a large room, especially suitable for background music. Unfortunately, for a solo arranger keyboard concert with a sit down audience in a quieter setting, I definitely prefer going stereo. With the Bose PAS, the deep sub (thumpy) bass sounds very impressive, but I find the 'mid-low' frequencies sorely missing, giving bass notes a thumpy quality lacking pitch clarity and definition. Though I can feel the bass notes, it's difficult to her their actual pitch. - Scott