Bose very graciously gave Bob Amstadt one of these systems for the NAMM show (and future Looperlative demos) so I really got a chance to try it out. I was very impressed with it's fidelity......................it is also extremely low on feedback, a potential problem that can plague anyone using open microphones to loop as I do. At Bob's Christmas party, his guitarist had a headset microphone on and at one point, leaned over the Bose system (that he owned)....................... I put my hands over my ears prepared for horrendous feedback as the microphone was right on top of the system and.........................NOTHING!!!!! And there is no need for monitoring so you can factor the lack of such a system in the price of the speakers. Critically speaking: I would say that for any instrumentalist using line inputs that it is a perfect system. If however, you are using a microphone for most of your looping and doing a lot of loops then there is the problem of rerecording your sound as you continue to loop which is instrinsic with any monitored microphone live situation. In defense of the Bose system, there is considerably less build up than with conventional monitored live situations. Normally, I play well behind my Mackie speakers and lately, I have been using an inexpensive (but I must confess, really excellent) Radio Shack wireless headphone setup so that I don't run into the problem of rerecording sound in subsequent loops with a live mic. The Bose is a fantastic system, but the way I do it actually has a much more controlled live microphone looping sound. I use a lot of acoustic instruments and I"m beginning to realize that I must start to buy pickups for my stringed instruments instead of using a microphone if I'm going to continue to have multiple layers.