For sale is an awesome Hartke HA 3500 bass amplifier head. Featuring a 10-band graphic eq, tube and solid state preamps, and 350 watts of power, this is an excellent bass amplifier with a ton of tonal flexibility. It is in great working condition and has been fully tested. Comes with a road case. Specifications: -Power rating: 350 Watts@4ohms -2x8Ohm speaker outputs -Tube and solid state preamps with individual gain controls -Built-in compressor -10-Band graphic equalizer -Low and high pass contour controls -Passive and active inputs -Balanced XLR output