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Gallien-Krueger Fusion 550 Hybrid Valve Bass Amplifier  

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Top Rated

Overview

  • 500-watt Class G high-current solidstate power amp
  • 50-watt Horn Bi-Amp System
  • Toroidal transformer
Description & Specs
  • MSRP:
    $1,498.00
  • Your Savings:
    - $449.00
  • Your Price:
    $1,04900
1 Used From $975.57

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Gallien-Krueger

With motorized knobs for two storable settings.

The Gallien-Krueger Fusion 550 is GK's first bass amp head featuring an all-tube preamp. The Fusion 550 bass head incorporates a uniquely designed 6-stage tube preamp paired with a 500W version of the high-current solid-state power amp used in the GK 1001RB-II. The rich warmth of tubes, combined with the quick, punchy power that G-K bass amps are known for, is an aural experience you must hear to believe.

As if that wasn't enough, GK has inventively incorporated motorized knobs into the Fusion 550 head that allow you to store two different settings. This gives you the ability to dial in a separate overdrive or slap tone and footswitch between them--a first for a fully analog bass amplifier.

The Fusion 550 amp also features a simplified version of GK's exclusive 50-W Horn Bi-Amp System. Dial in the horn where you like it, and as you adjust your volume with the master control, the ratio between the woofer and tweeter is preserved. Other features include a tube driven 4-band active EQ and voicing filters with a frequency select for the contour control. The rear panel features include Neutrik Speakon and 1/4" speaker output jacks, effects loop, tuner out, and a footswitch input jack. It also has a DI output which uses an isolated transformer for ultra-quiet operation.

Features

Power Amp

  • 500-watt Class G high-current solidstate power amp
  • 50-watt Horn Bi-Amp System
  • Toroidal transformer

Pre Amp

  • Six-stage all tube preamp (three 12AX7's)
  • Motorized pots allow 2 presets
  • Footswitchable two-channel motorized gain, master, and horn level controls
  • Tube driven four-band active EQ
  • Contour control with 500Hz-800Hz mid-frequency select
  • Deep and bright switch
  • Mute switch
  • 1/4" input jack with active/passive switch (-14dB)

Rear Panel

  • Effects loop & tuner output
  • Active DI with level control, pre/post, and ground switch
  • Two Horn Bi-Amp compatible Speakon outputs
  • Two 1/4" speaker outputs (fullrange only)

Bring your bass sound to the forefront with this exceptional bass amp from G-K. Order today.

 

Fusion 550 Hybrid Valve Bass Amplifier Specifications:

  • Dimensions:
  • 19"W x 5.25"H x 9.75"D
  • Three rack spaces
  • Weight: 24.5 lbs.
Customer Reviews
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Review Snapshot®

by PowerReviews
Gallien-KruegerFusion 550 Hybrid Valve Bass Amplifier
 
5.0

(based on 7 reviews)

Ratings Distribution

  • 5 Stars

     

    (7)

  • 4 Stars

     

    (0)

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Reviewed by 7 customers

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(1 of 1 customers found this review helpful)

 
5.0

Lots of Tone and Lots of Power

By MattyDB5

from Raleigh, NC

About Me Experienced

Verified Buyer

Pros

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

Cons

    Best Uses

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

    Comments about Gallien-Krueger Fusion 550 Hybrid Valve Bass Amplifier:

    I just switched to this amp because I got tired of carrying an 80 lb tube head in and out of venues. Not only is the tone better than the one I had, it has a lot of useful features like a tuner out and the ability to control your direct out level independently as well as run it pre/post equalizer. I'll probably always be playing GK from now on.

    Comment on this review

    (1 of 1 customers found this review helpful)

     
    5.0

    best tube head ever

    Comments about Gallien-Krueger Fusion 550 Hybrid Valve Bass Amplifier:

    value is great
    this is hands down the best sounding bass head i have ever played through the tone on this thing is amazing....it is a bit pricey but is well worth it.

    Comment on this review

    (6 of 6 customers found this review helpful)

     
    5.0

    60 seconds or less

    By Ken Butcher

    from Canada

    Comments about Gallien-Krueger Fusion 550 Hybrid Valve Bass Amplifier:

    My title is "60 seconds or less" because you'll fall in love it before the tubes have time to warm up. I've used/owned Fender, Ashdown, Ampeg, Hartkey and Peavy over the years, but they don't come close to the sound of this one. I'm in love with this amp and will not buy another one for as long as this one is functioning.
    This amp has all the features and more than you'll ever want! Unlike some other amps with they either have too much or to little GK actually puts a lot of useful feature on the front pannel. The four band eq and contours are perfect. I haven't used the motorized knobs yet because I just find it compliments my set up as is. Actually when I first tried it in the store, the store emplyee and I both jumped back as the knobs moved slightly. We kind of looked at each other and thought we were crazy!
    I've never owned a GK before so I'm not too sure about their quality, but I had several bass player friends recommend GK over other popular brands. So far I've had no problems!

    Comment on this review

    (4 of 4 customers found this review helpful)

     
    5.0

    best amp ive ever played

    By Anonymous

    from Undisclosed

    Comments about Gallien-Krueger Fusion 550 Hybrid Valve Bass Amplifier:

    i recently bought this as an upgrade to my gk 700rb head(which i also recommend)the 700rb is a great amp but ive been playing it through the gk neo 412 and it felt a bit underpowered so naturally id want to get something with a little kick. firsts things first this thing is built like a tank, and the motorized pots are amazing. they let me dial in a nice jazz tone then go right into a sic pop slap. and the over all tone control destroys any ampeg Ive ever touched. looking forward to taking it with me tour this year

    Comment on this review

    (5 of 5 customers found this review helpful)

     
    5.0

    Pure greatness

    By Adaire

    from MN

    Comments about Gallien-Krueger Fusion 550 Hybrid Valve Bass Amplifier:

    After playing with nothing but Fender forever I switched to SWR about 2 years ago. It was ok but never blew me away. I wanted something that had that great tube sound without the great tube head weight. This amp is it. I played on this amp for 5 minutes and was in love! I've gigged with it 10 times now and you'd be amazed at how many compliments I get. I play in a prog metal band and you can get anything from a nice growl to a jazz fusion tone. I plan on buying this exact head for my backup. 5 stars!

    Comment on this review

    (4 of 4 customers found this review helpful)

     
    5.0

    I can't imagine anything better!!

    By Dr. Rock-e2zWP

    from Louisville, KY

    Comments about Gallien-Krueger Fusion 550 Hybrid Valve Bass Amplifier:

    This amp is the best I have ever played through!! It is extremely versatile and has ample amount of power. You will never need more power. I keep my Master Vol on about 3. Anything more and my band mates start complaining!! (LOL) It gets that smooth tube tone too. GK has really upped the ante on all the other amp companies. One of my favorite features on it is the gain. It's not at all like the gain or (growl) from the RB series amps. No way!!! This gain REALLY makes it growl! And the included foot pedal is killer too. You can switch b/w 2 different settings on the amp. GK has the best customer service. They always take care of me. I think they are the best bass amp company PERIOD and this amp really solidifies their dominance!!!

    Comment on this review

    (4 of 4 customers found this review helpful)

     
    5.0

    Great Sound!

    By Old School Bassman-j_2r.

    from Sacramento Califormia

    Comments about Gallien-Krueger Fusion 550 Hybrid Valve Bass Amplifier:

    Best Tube Amp Ever! Been playing Bass for 20 years. I have had Ampeg, Fender, etc. This one out plays them all. And, It is GK so its reliable, unlike Ampeg that fails often. Its worth the money.

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