Hartke 2500 Bass Head, Bass Amp Head, Power: 250W into 4Ω, 180W into 8Ω, Tube emulation & solid-state precursors, Bass & treble contour controller, 10-Band graphic EQ, Adjustable compressor, Passive / active input jacks, DI-out with pre / post switch, Useable in racks, Dimensions: 44 x 9 x 33 cm, Weight: 15.2 kg