In general terms
any mixer that uses electricity doesnt mean they are powered -they are still non powered mixers (unless they have power amps built in to drive passive speakers ).
these are powered mixers
http://www.carvin.com/products/group.php?CID=MXP this is not(though it uses electricity)
http://www.carvin.com/products/single.php?ItemNumber=sm162 http://www.carvin.com/mixers/