Compact, versatile, and powerful, the Hartke HA3500 350w Hybrid Bass Head remains a favorite option among gigging players for how much professional bang you get for your buck. Separate tube and solid state preamps allow you to choose one or blend the two to your liking, while fan-favorite tone shaping features like a 10-band EQ and rotary bass/treble contours allow for that perfect sound. For this price, it's hard to find a harder-working amp.