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Gallien-Krueger MB Fusion 800 bass guitar amplifier head

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Gallien-Krueger MB Fusion 800 bass guitar amplifier head
Product no: 9000-0010-6884 Bax Music Warranty: This product comes with a 3-year warranty.

General

Gallien-Krueger took their immensely popular MB Fusion bass amplifier, swapped its power amp with that of the MB800 and made several other very practical upgrades. The result is this small yet versatile powerhouse: the MB Fusion 800. It boasts a massive 800 watts of power and still weighs only 2.5 kilos. As it is so compact, you can easily bring it in your gig bag. The MB Fusion 800 is equipped with three 12AX7 preamp tubes for a rich, warm sound and tasteful distortion. The digital class-D power amplifier gives you the authentic GK punch and quick response.

Gallien-Krueger MB Fusion 800: practical features

The MB Fusion 800 has two switchable channels that allow you to go from a full, warm and clean sound to the characteristic Gallien-Krueger edge. Both channels have their own volume and gain control, which allow you to use channel B as drive at the same volume as channel A, or use both channels at different volumes for solos. Moreover, the MB Fusion 800 is fitted with GK's famous active 4-band equalizer and contour control. Contrary to the MB Fusion 500, this amp has the voicing filters (contour 500/800Hz, presence and deep) and the limiter on the front panel, disguised as push/pull contour, treble, bass and master controls.

DI-output, FX loop and more

On the back is Gallien Krueger's high-end DI output with ground lift and pre/post EQ button. Next to the footswitch input is the tuner output and the FX loop that let you add your favourite external effects to the overall signal. Additionally, the MB Fusion 800 features a headphone output that can also be used as a line-out or to daisy chain a GK MB powered speaker cabinet or heavier power amp. Last but not least, the amp's fitted with two SpeakOn outputs for cabinets of 1x 4 ohms, 1x 8 ohms, 2x 8 ohms or 1x 16 ohms.

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Specifications

Product features

Connectors	External speaker(s), Footswitch, Headphone, Line-out
Number of channels	2
Number of speaker outputs	2
Amp modelling	no
Sustainable product	not specified
Effects loop	yes
Weight	0 - 4.9 kg
Speaker output impedance	16 Ohms, 8 Ohms, 4 Ohms
Built-in tuner	no
Built-in compressor	no
Built-in effects	none
Colour	black
Power attenuator	no
Amplifier type	hybrid
Amplifier valve	not applicable
Power in Watts	751 - 1,000 Watts

Weight and dimensions including packaging

Weight (incl. packaging)	2,6 kg
Dimensions (incl. packaging)	51,0 x 41,0 x 18,0 cm

Product specifications

hybrid bass guitar amplifier top
designed and built in the USA
very compact and lightweight
tube preamp section of the MB Fusion
energy-efficient class-D digital power amp
preamp tubes: 3x 12AX7
number of channels: 2, gain A and gain B (with separate volume controls)
channels can be selected on the front panel or with the included foot switch
800 W at 4 ohms, 560 W at 8 ohms
knobs with LED lighting for improved visibility on dark stages
active 4-band EQ with four specific bass frequencies
contour controls: scooped mids, added bass and treble
-10dB pad switch in the input section for active and high-output bass guitars
self noise: 90 dB (A-weighted)
on/off button with Power/Protect LED ring
line/chain output to connect GK MB-powered speaker cabinets
power supply: 230 volts / 240~ 60 Hz
power: 880W (full), 160W RMS
cooling: variable fan
dimensions: 279 x 311 x 44.5 mm
height including rubber feet: 63.5mm
weight: 2.5 kg

push/pull knobs

gain A: activates channel A
gain B: activates channel B
contour: switches the mid cut between 500 Hz (white LED) and 800 Hz (blue LED)
treble: activates presence function
bass: activates deep function
master: activates built-in limiter (standard setting is on)

Connectors:

6.3mm instrument input with -10dB pad
DI output: XLR with ground lift and pre/post EQ switch
footswitch input: 6.3mm mono jack
tuner output with mute function (on the front): 1x 6.3mm jack
FX loop send + return: 2x 6.3mm jack
headphone/line/chain output (selectable): 6.3mm TRS jack
2x Neutrik SpeakOn output: max 1x 4 ohms or 2x 8 ohms

Equalizer:

bass: +/-14 dB at 40 Hz
Lo-Mid: +6 dB/-9 dB at 250 Hz
Hi-Mid: +5 dB/-8 dB at 1 kHz
Treble: +10 dB/-19 dB at 7 kHz

Voicing filters:

Contour: -16 dB at 500 Hz or -15 dB at 800 Hz
Deep: +4 dB at 30 Hz
Bright: +4 dB at 10 kHz

Safety:

full short-circuit, thermal and RF safety
stable in reactive and mismatch loads
5 second muted warm up

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Reviews from other countries

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Rob S. January 6, 2018

Wrote the following about Gallien-Krueger MB Fusion 800 bass guitar amplifier head

Super lichtgewicht bas amp met genoeg vermogen, 1 rackunit (rackmounts apart te bestellen), 3 buizen pre-amp en footswitch voor switchen tussen de 2 kanalen. Doordat het front verlicht is kun je on stage indien nodig goed en snel je sound tweaken

Rob S. January 6, 2018

Wrote the following about Gallien-Krueger MB Fusion 800 bass guitar amplifier head