hey,, im trying to decide on a good powered monitor for this unit,,im new to electronic drums, but i have figured out this unit will need a very wide range of frequency,,im also trying to keep this as portable as possible,,im hoping a 12" will be enough,, whatever i get will eventually be used as my stage monitor, but for now, only garage band stuff,,currently play in church settings and hope this will add some flavor, when i learn how to use it,,thx for any and all advise