Hartke VX3500 Bass Guitar Amplifier. This is a very popular 350W 4x10" combo bass amp and has an impressive dual preamp, loud volume and tone shaping features. The street price is under $800. For a detailed guide to Bass Amps see http://www.guitarsite.com/best-bass-amp/
Orange AD200 Bass MK3 head & OBC410 Cab The 200W Orange Amplifiers AD200B Tube Bass Amp Head is one of the purest bass amplifiers ever produced. No bells and whistles, just the shortest signal path which gives the best results. The AD200B amp has become a favorite of bass players. Its outstanding bass tone puts the Orange AD200B above many bass amps in this price range.