I would never try to sell the Compact to a keyboard player. That thing is designed for a GUITAR and a Vocal....Nothing more. Even has the guitar "tone match" setting on the line in side. Coffee shop volumes. There is not a lot of bulk in the sound. Midrange is weak. Easily over driven. Sounds better with only one extender.

The Mod II is still hot in our house. Have not found a venue where it did not work out or wasn't complimented on the clarity and eveness of direct sound high to low almost 180 degrees around the listening area, Myrtle beach is full of Singles and Duos and most of the successful ones are using the Bose System. One popular guitar duo each has one. They sound great. No tracks Just acoustic guitar and vocals on two Mod II systems about 8 feet apart. A real wide and natural stereo performance without phasing issues.

I would rather the keyboard players check out the new Samson Expedition Series (yeah Samson) which improves on the Yamaha Stagepass System by adding a fan to the amp and an Ipod mount with better Bottom end for $100 Less than the Yamaha and $500 less (and louder) than the Bose and in Stereo. It is really a nice system. I cannot vouch for reliability.....but it sure beats the Yamaha StagePass System on many levels..
http://www.samsontech.com/products/productpage.cfm?prodID=2001&brandID=2



[This message has been edited by Kingfrog (edited 08-31-2010).]