Gallien Krueger MB Fusion 800

Hybrid Amp Head for Electric Bass

  • Power: 800 W @ 4 Ohm
  • Full tube preamp with 3 tubes 12AX7
  • Digital power amp
  • Outputs: headphones/ line out
  • 4-Band active EQ
  • Contour knob
  • Effect channel
  • Symmetrical XLR DI output with pre/ post EQ switch and ground lift switch
  • 2 Speaker twist loudspeaker output
  • Dimensions: 27.31 x 31.12 x 4.45 cm
  • Weight: 2.5 kg
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Sound samples

  • Funk
  • Funk Line
  • Jazz
  • Jazz Line
  • Metal
  • Metal Line
  • Rock
  • Rock Line
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Further information

Power 800 W
Equalizer 4-Band
Compressor No
Limiter Yes
Effects unit No
External Effect Loop Yes
Connector for external speakers Speakon
Headphone connection Yes
Di Output Yes
Tuner Output No
Rack mount No

This product is currently sold out

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4 written ratings Read all reviews

Gallien Krueger MB Fusion 800

DerekB, 05.06.2014
Having used many GK amps and combos over the years this little amp is another winner from GK. I previously had the GK MB800 before this and decided to upgrade for the warmer valve sound. This amp ticks all the boxes, very light, powerful, 2 switchable channels, controls you can see in the dark, multiple ins and outs. I did a side by side comparison test between this and my back up amp an Eden Traveler 550 and the difference in tight bass end and power is quite remarkable....and it's cheaper!
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Theoretically good but practical ...

... it looks something different.
The values ??bribe at first sight and I have waited very long on this model.
Tube preamp, class D power amp, many connection and control possibilities in a small space and with the lowest weight.
The sound and the volume convinced me the first time. The low weight, with the offered equipment were my purchase criteria.

Unfortunately, on the first device the controls very strong and the fans clattered so loud that one might think that due to the small size of the device some cables had to be passed too close to the fan rotor.
Then it went back then for this device.

On the second run everything looked much better. The fan did not clatter, the potentiometers could be rotated evenly and without a hakel. The thick end hid itself now however in the DI-Out, which on the mixer independent of the earthing an oscillating, high-frequency whistling / sums as in the transmitter search of an old radio. Trying different cables and mixing consoles unfortunately brought no change.
So it was said here: unfortunately back.

The device has without question sound quality, but the initial trust has been lost by the lack of processing unfortunately.
I recommend GK to rework its series once again or at least to raise the standards in manufacturing.

I will now look heavily for another model.

Thanks to the friendly Thomann staff, the exchange and return was easy.
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B-Stock from 899 € available
979 €
Free shipping incl. VAT
In stock within 3-4 weeks
In stock within 3-4 weeks

This item is expected back in stock soon and can then be shipped immediately.

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Phone: +49-9546-9223-20
FAX: +49-9546-9223-24
Offers include 24% Greek VAT and are valid as long as stocks last. Shipping costs to Greece are 20 EUR, free shipping on orders above 298 EUR. Please click here for international Shipping rates. We do not accept liability for typographical errors or inaccurate information of any kind. *RRP = manufacturer's / distributor's recommended retail price in Germany
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