With its switch mode power supply and Aluminum chassis, the MB Fusion 800 weighs in at only 5.5 lbs. (2.5kg)

Illuminated knobs and switches show the amplifier's state at a glance, even on the darkest stages.

Push-push knobs are used to select multiple voicing, channel and limiter options, the knob indicator color indicates the operation mode.

Three 12AX7 tubes deliver the perfect blend of classic response and the timeless 'Variable Q' equalizer design from the 800RB.

Foot switchable channel switching for on the fly volume boost or additional grind.

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.

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

Switch mode power amp and supply deliver a crushing 800 Watts of cool running power.

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 circuitry indicates problems on the power switch ring. Blue is good!