Hartke model 7000 350W+350W bi-amp. Trace Elliot pro-grade 4x10 cab and GK 1x15 ported cab upgraded with a massive Altec-Lansing speaker. The amp has dual preamps, EQ and has a frequency split and balance control for the two outputs allowing you to perfectly balance what goes to the 4x10 and what goes to the 1x15. This is a seriously powerful pro-grade bass rig, in excellent working condition. Includes heavy duty Anvil case for the head.