This is a great Hartke 350 watt bass head paired with a 15" mackie speaker.
Check here for the amp specs:
http://www.musiciansfriend.com/amplifiers-effects/hartke-ha-series-ha3500c-350-watt-hybrid-bass-amp-head
This thing sounds great. Was just serviced by our awesome amp tech Rod Evans.
This thing really thumps! Come on down and check it out!