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collapse expand iconDescription

The 500W Gallien-Krueger MB Fusion tube preamp incorporates the same all-tube preamp of the GK Fusion 550 and maintains the amazing portability of the MB2-500. The ultra-light bass amp delivers 500W at 4 ohms, 350W at 8 ohms, and is equipped with an all-tube, 3x12AX7 preamp. The GK MB Fusion bass head also has a 4-band active EQ, variable contour with mid frequency select, and Deep and Bright switches, so you've got total tonal control.
Open Box Gallien-Krueger MB Fusion 500W Tube Preamp Ultra Light Bass Amp Head Level 2 888365483405
Open Box Gallien-Krueger MB Fusion 500W Tube Preamp Ultra Light Bass Amp Head Level 2 888365483405
Open Box Gallien-Krueger MB Fusion 500W Tube Preamp Ultra Light Bass Amp Head Level 2 888365483405

collapse expand iconFeatures

  • 500W Digital power amp
  • All tube preamp (Three 12AX7s) w/ 4-band Active EQ
  • Footswitchable Boost w/ Volume control
  • Variable contour with mid frequency select
  • Deep and Bright switch
  • Mute switch
  • Active/passive switch (-14dB)
  • Effects loop
  • Line out, headphone out and Tuner out
  • XLR out with pre/post EQ and ground light
  • 2 Speakon outputs
  • Footswitch included

collapse expand iconSpecs

4 lb.

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