Gallien-Krueger MB Fusion 500 Hybrid Ultra Light Bass Amplifier

Gallien-Krueger MB Fusion 500 Hybrid Ultra Light Bass Amplifier

Free Shipping
Regular price $789.00
Not all items are stocked at our Deerfield Beach location. If you're local, please contact us before visiting.

With its switch mode power supply and Aluminum chassis, the MB Fusion 500 weighs in at only 4.5 lbs (2kg). Tube Warmth Three 12AX7 tubes deliver the perfect blend of classic tube response and the timeless “Variable Q” equalizer design from the 800RB.

Foot switchable channel switching for on the fly volume boost or additional grind. Ultra Portable Power Drops into your gig bag for effortless transport to travel dates, rehearsals and enough power for even large venues.

Balanced DI with Pre/Post and Ground Lift switches to feed the house, Foot Switch Jack, Tuner output, FX Loop for connecting outboard accessories, Headphone Output for silent practice, Line Out plus “Chain Out” to drive GK’s MBP powered cabinets. Two twist lock speaker connectors ensure reliable and safe cabinet connections.

The signal path for gain, EQ, contour and the DI are 100% tube driven, achieving classic tube performance with 300V plates.

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!


WARNING: Cancer and Reproductive Harm. For more information go to