I see on the Behringer site the amp is rated at 600watts or 300watts for each side, yet I see elsewhere its rated at 250watts or bridged 500watts so now I’m confused Have Behringer made mark I and mark II models with different power ratings?

The specs on Behringer site states 600watts
http://www.behringer.com/EN/Products/A500.aspx

The listing on ebay states 500watts
http://cgi.ebay.co.uk/ws/eBayISAPI.d...#ht_1899wt_868