Description
The Fusion 550 gives bassists a hybrid rig in one box: a six-stage 12AX7 tube preamp feeding a high-current solid-state power section. You get the rounded, harmonically rich low end tube circuits are known for, tightened up by the fast transient response that’s made GK a mainstay on stages for decades. It’s a tone that splits the difference between vintage warmth and modern punch, so you’re not stuck choosing one over the other.
What sets this head apart is the motorized control system – dial in two completely different EQ/gain settings and switch between them on the fly with the included footswitch. Slap tone for the verse, fingerstyle growl for the chorus, no rack of pedals required.
- 500 watts into 4 ohms / 350 watts into 8 ohms
- Dedicated 50-watt horn bi-amp system for tweeter/horn control
- Four-band active EQ with variable contour and mid frequency select
- Three-tube preamp (12AX7)
- Motorized, footswitchable knobs with tuner mute
- Effects loop and tuner out with mute
- XLR direct out with pre/post EQ switching and ground lift
- Speakon and 1/4″ speaker outputs
- 19″ x 10″ x 5.25″, 25 lbs
This unit is a floor demo – fully functional and ready to gig, offered at a discount versus new. If you want tube character without giving up GK’s signature low-end punch and reliability, this is the head to grab.
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