Gallien Krueger MB500 Fusion Bass Amp Head


Amazing power in a lightweight head

Tube Pre-Amp Section

  • 500 Watt at 4 Ohm
  • 350 Watt at 8 Ohm
  • 4 Band active EQ
  • Only weighs 2kg
Out of Stock - 01524 410202

Out of Stock - 01524 410202

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Feather Weight

With its switch mode power supply and Aluminum chassis, the MB Fusion 500 weighs in at only 4.5 lbs (2kg).

Variable Q Tube Equalizer

Inherited from the 800RB, this unique tube design varies the EQ bandwidth to retain a musical response even at extreme settings.

High Tech Power
Switch mode power amp and supply deliver a crushing 500 Watts of cool running power.

Intelligent Cooling
Temperature controlled fans keep the amplifier cool delivering only the required amount of air, reducing noise and dust intake.


Thoughtful handle design protects the front panel controls.  Internal sensing circuitry will indicate problems on the power switch ring. Blue is good!


10.75 x 10 x 1.75"
4.5 LBS

12AX7 300V PLATE