The Hartke HA3500 Solid State-Tube Bass Guitar Amplifier Head, 350 Watts, 10 Band EQ. Tube and solid state preamps, equalization, tone control and compression produce that clean, high-impact Hartke sound.

The Hartke HA3500 amplifier was introduced in 1991 and has since become an industry standard in bass amplification. There is no better way to power a Hartke (or any other) speaker cabinet. The HA 3500 is designed with more control in mind. Virtually unlimited tone-shaping and plenty of power for maximum headroom in any playing situation. Selectable tube and solid state preamps for a rainbow of new tone colors. Pinpoint equalization, tone control and compression to fine-tune each sound. Built rugged, each amp is known for the clean, high-impact sound that put Hartke on the map.