Perhaps for an acoustic guitar/vocal duo group, but no way will 6.5" speakers (x 4) + tinier tweeters (x 2) are going to cut it to reproduce the full range sound an arranger keyboard with bass & drums demand. A Logitech Z-2300 system @200watts RMS will deliver far better bass sound (though admittedly weaker mid-range), is of comparable weight, and costs a lot less than the $650 BA-330. I paid $99 for mine a year or two ago. Not sure if the Z-2300 is still in production though.