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Gallien-Krueger MB Fusion 800W Hybrid Bass Amp Head Black 

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  • Power: 800W
  • Four-band active EQ
  • Heaphone/chain/line output (selectable)
Description & Specs
  • MSRP:
  • Your Savings:
    - $385.00
  • Your Price:
2 Used From $719.20

Order Now! Expected to ship 04-27-2014

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See All Gallien-Krueger Hybrid Bass Amplifier Heads

Big, thumping power in a portable size.

Continuing the evolution of the Gallien Krueger MB bass head series, the MB800 features incredible output, increased functionality and a completely discrete FET (field effect transistor) driven preamp.

With 800 massive watts of power, the MB800 can handle even the largest venues without breaking a sweat, and at 4.9 lbs. neither will your roadie. All of the controls of the MB800 are lit to indicate the current operating status including; input clip, tuning mute, Gain A, Gain B/Level-B, power amp clipping, limiter enable and EQ/Contour settings. It features the same FET technology used to create the legendary boost (G.I.V.E.) circuit found in all GK amplifiers for over 30 years is used in every stage of the MB800 preamp. Using FET devices to drive the GK four-band active EQ, Contour and Gain allows the MB800 to transition seamlessly from a full, warm, clean tone to full on GK growl.


  • Power: 800W
  • Four-band active EQ
  • Heaphone/chain/line output (selectable)
  • XRL output (pre/post EQ)
  • Mute switch
  • FX loop
  • Footswitch included
Customer Reviews

Review Snapshot®

by PowerReviews
Gallien-KruegerMB Fusion 800W Hybrid Bass Amp Head

(based on 1 review)

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Reviewed by 1 customer

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Lightweight amp with great sound

By yukster

from Portland, OR

About Me Experienced


  • Easy To Use
  • Excellent Sound
  • Good Warmth
  • Portable
  • Powerful


    Best Uses

    • Amateur Recording
    • Events
    • Home Studio
    • Performances
    • Professional Recording

    Comments about Gallien-Krueger MB Fusion 800W Hybrid Bass Amp Head:

    This amp sounds great and provides plenty of volume with just the right set of features... and it's only 5 pounds! It would be 5 stars but for one issue: switching to gain B with the footswitch causes a noticeable dropout. I haven't recorded with it yet, but that's going to be problematic when I do. I've had to anticipate the spot where I'm going to switch to the boost and hit the switch slightly ahead of the downbeat.

    But otherwise, it's a fantastic amp at a reasonable price.

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