500-watts All Tube Preamp, Portable Rackmount Bass Head

The Gallien-Krueger MB Fusion Bass Amplifier Head, is a combination of the all tube pre-amp technology of the Fusion series but without the motorized controls, and partnered with the ultralight power amp found in the MB500. The MB Fusion has the identical tone shaping capabilities of the Fusion series, plus two foot-switchable gain and master volume controls making it the ultimate in portability, tube tone and functionality. 

Gallien-Krueger MB Fusion Bass Amplifier Head Specifications:

• 500 watts @ 4 ohms, 350 watts @ 8 ohms
• All tube preamp (Three 12AX7's)
• Dual input gain and master
• Four band active EQ
• Variable contour with mid frequency select
• Deep and bright switch
• Effects loop and tuner out with mute
• XLR out with pre/post EQ and ground lift
• Two Speakon outputs
• Weight: 4.5 lbs.