I have the Bose on a 45 day trial, which you can find out about at www.bose.com. Vocals (Shure SM58) and acoustic guitar (with Fishman Rare Earth Blender) both sound amazing.   I added reverb to the vocals and found the people at Bose very helpful.

A friend of mine approaches your one man band requirement - Vocal, guitar, bass drum, hi-hat all through one PAS with spectacular results. You can visit Dan and www.DanStevens.net

dw