GK Fusion 550 bass head. 3 12ax7s hybrid bass amp, this thing can do it all. Super loud, great for gigs. I’ve owned one for 12 years and absolutely love it.

- 500W @ 4 ohms (350W @ 8 ohms), 50W horn bi-amp system, three-space rack-mount bass head-unit, hybrid chassis, preamp: 3 X 12AX7, power: solid-state, two channels, front black control panel, single input, eight black knobs (g, c, t, h/m, l/m, b, horn bi-amp level, MV), active/passive switch, channel switch, freq. switch, bright switch, deep switch, mute switch, rear panel: effects loop, tuner out, transformer isolated active DI with level control, pre/post/ground switch, two speakon outputs and two 1/4 in. outputs, 19 in. wide, 5.25 in. tall, 9.75 in. deep, 25 lbs., mfg. 2007-present.

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Listed16 days ago
ConditionVery Good (Used)
Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.Learn more
Brand
Model
  • Fusion 550 500-Watt Hybrid Valve Bass Amp Head
Finish
  • Black
Categories
Year
  • 2010s
Electronics
  • Hybrid
Number of Inputs
  • 1 Input
Power Tube Type
  • None
Color Family
  • Black
Number of Channels
  • 1 Channel
Impedance
  • 8 ohms
  • 4 ohms
Output Power (Watts)
  • 500

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Rylan

Phoenix, AZ, United States
Joined Reverb:2026

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