I've auditioned and gigged with the Bose L1 System thru my Yamaha T2, and EXCEPT for its stereo sampled sounds (Grand Piano, etc, which sounded thin & brittle (lacking body) when mixed to mono) appreciated the natural (unhyped) sound it delivered, but I LOVE and APPRECIATE the impressive full bodied 1,100 watt STEREO sound and quick setup convenience of my new customized Z5500 setup. Thanks again to Pose for designing & building this terrific sounding z5500 system upgrade for me. Believe it or not, It's the best sounding PA I ever heard thru my Tyros2. If anybody else is interested in building a similar system, checkout this thread link: http://www.synthzone.com/ubbs/Forum37/HTML/017799.html