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Gallien-Krueger Logo
SKU 
H73085 000000000

Gallien-Krueger MB800 800W Ultralight Bass Amp Head  

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Continuing the evolution of the MB Series, the MB800 bass amp head from Gallien-Kreuger features incredible output, increased functionality, and a co...Read More

  • MSRP:
    EUR 949.31
  • Your Savings:
    - EUR 285.08
  • Shipping (48 Contiguous U.S. States)
    FREE
  • Your Price:
    EUR 66424.00

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See All Gallien-Krueger Solid State Bass Amplifier Heads
      OVERVIEW

      800 watts of pure GK power and tone in a five-pound head!

      Continuing the evolution of the MB Series, the MB800 bass amp head from Gallien-Kreuger features incredible output, increased functionality, and a completely discreet FET-driven preamp. With 800 massive "GK watts" of power, the MB800 can handle even the largest venues without breaking a sweat, and at 5 lb., neither will your roadie!

      All of the MB800's controls 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. 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.

      FEATURES
      • 800W @ 4 ohms, 500W @ 8 ohms
      • Discreet FET preamp
      • Push-activated Gain A/B and limiter defeat
      • -10dB pad
      • 4-band active EQ with variable contour
      • Effects loop and tuner mute
      • XLR out, pre/post EQ
      • Defeatable limiter
      • Two Speakon outputs

      Step up to the power and portability of the MB800! Order now.

      SPECIFICATIONS

      MB800 800W Ultralight Bass Amp Head

      • 10-3/4"W x 1-3/4"H x 8-1/2"D
      • 5 lb.

        TC Electronic Videos

      • MB 800 Osu7VZ7AU4M
      Reviews
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      Review Snapshot®

      by PowerReviews
      Gallien-KruegerMB800 800W Ultralight Bass Amp Head
       
      4.5

      (based on 13 reviews)

      Ratings Distribution

      • 5 Stars

         

        (9)

      • 4 Stars

         

        (3)

      • 3 Stars

         

        (0)

      • 2 Stars

         

        (0)

      • 1 Stars

         

        (1)

      90%

      of respondents would recommend this to a friend.

      Pros

      • Easy to use (9)
      • Excellent sound (9)
      • Portable (9)
      • Good power output (8)
      • Warm / comfy (5)

      Cons

        Best Uses

        • Performances (7)
        • Outdoor events / games (5)
        • Professional recording (3)
          • Reviewer Profile:
          • Experienced (5), Professional musician (5)

        Most Liked Positive Review

         

        Big sound, small package

        If it was rack mounted and weighed 50lb, this thing would still be impressive. Just heavy enough to not dance around on top of my cabs.

        Massive low end, easily...Read complete review

        If it was rack mounted and weighed 50lb, this thing would still be impressive. Just heavy enough to not dance around on top of my cabs.

        Massive low end, easily sculpted w/4 band EQ. Huge punch and headroom, benches at over 1000 watts, and never gets hot. Doesn't cut out when slammed hard, like some micros (cough Ampeg cough). Fans run occasionally when the amp is idle, but don't intrude on the gig, even during acoustic sets. Lighted knobs are a nice touch on a dark stage.

        Typical G-K "grind" with controls at noon, but nix the contour, back the treble off a bunch, push hi and lo mids slightly and roll off a hint of bass, and it's ruler-flat. The King Of Clean, less wooly and fizzy compared to the 700RB and 1001RB. Hi-fi in a good way, yet it can still do fat, old-school studio tones.

        G-K should get more credit for the discrete-component FET preamp in this one. Sounds less solid-state than the MB200 and MB500, and for the first time in years, I don't miss a tube front end. About the only thing it doesn't cover, is tube distortion. Lots of pedals for that, of course.

        DI isn't quite at plush-sounding as my Genz Benz Streamliner 900, but still excellent. I was skeptical of the auto ground lift at first, but it works well in halls with noisy AC.

        It would be nice if the construction screamed quality like my Genz, but in decades of playing out, no-one has ever asked to fondle my amp, so what does it matter?

        VS

        Most Liked Negative Review

         

        Disappointed

        I have appreciated the tone and versatility/quality of Gallien Krueger gear for many years. I was very disappointed in the MB800. The faceplate was molded weird and had flaws I would not expect...Read complete review

        I have appreciated the tone and versatility/quality of Gallien Krueger gear for many years. I was very disappointed in the MB800. The faceplate was molded weird and had flaws I would not expect from a QC'd product sold to customers. After turning the amp on, I heard loud whining from ceiling fans in the room. Basically the amp is not well sheilded and picked up any noisy electical device near it. Finally, it was warm in the room and the fans kicked in to cool the amp. They were VERY noisy to the point where I would have trouble hold a telephone conversation in the same room. I do not believe this amp was defective and therefore the issues were all weaknessess in the design (challenges of making a Class D amp). I would look elsewhere, possible Mark Bass and see if they have similar issues with their gear. It's comparably priced, so it's an alternative I am looking at.

        Reviewed by 13 customers

        Sort by

        Displaying reviews 1-10

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        (1 of 1 customers found this review helpful)

         
        4.0

        Great Bang for the buck!

        By Bassplayer105

        from New Hampshire

        About Me Professional Musician

        Pros

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

        Cons

        • Loud High End Hiss

        Best Uses

          Comments about Gallien-Krueger MB800 800W Ultralight Bass Amp Head:

          Amp is great!
          Flat EQ and the tone is amazing!
          Only thing I noticed right away was the high end hiss coming from my tweeter.
          Called a friend that is endorsed by GK and asked him if this was typical and he said yes.
          So is it a little annoying? yes,
          is it going to keep me from using the head?
          No Way!

          Comment on this review

          (4 of 4 customers found this review helpful)

           
          5.0

          Great loud light weight head

          By 4stringmofo

          from Long Island, NY

          About Me Experienced

          Pros

          • Easy To Use
          • Excellent Sound
          • Portable
          • Powerful

          Cons

          • No Mute On The Footswitch

          Best Uses

          • Events
          • Home Studio
          • Performances
          • Professional Recording

          Comments about Gallien-Krueger MB800 800W Ultralight Bass Amp Head:

          Great amp, especially for the price. I was looking for a head to give me a very bright clear punchy midrange sound. Wasn't interested in fat warm tone that brands like ampeg are known for. This amp fits the bill perfectly. Was skeptical of its size and weight (I transport it in my gig bag) but its been great. Only negative I've found is that the footswitch it comes with to toggle between gain channels doesn't have a tuner mute switch on it. You have to go to the head to mute the amp which isn't convienient when youre on stage. Seems like it would have been a simple, easy thing to include.
          Besides that little qualm it sounds great in all my different projects from heavy metal to classic rock/alternative to funk and blues. I have it paired with a SWR Goliath 410 and an Avatar 115 and the sound is massive. Great product.
          Also, GK's customer service is top notch. Called before buying and they were extremely helpful talking tech of amp to cab connections and specs.

          Comment on this review

          (8 of 8 customers found this review helpful)

           
          5.0

          More than you need.

          By TCCares

          from Pittsburgh, PA

          About Me Experienced

          Ask me a question

          Verified Buyer

          Pros

          • Easy To Use
          • Excellent Sound
          • Portable
          • Powerful

          Cons

          • Limited Functions

          Best Uses

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

          Comments about Gallien-Krueger MB800 800W Ultralight Bass Amp Head:

          This amp is just great, it has more power than you are going to really need, it puts out more than it advertises. I play this through a GK 412NEO cabinet and could not be happier with my sound. There is a little fuzz when the gain is up but it is to be expected from all the bass amps I have heard lately. The fan is louder than other amps as well, but even in a low practice setting your only going to hear it when you stop playing, no different than a traditional power amp.

          Comment on this review

          (4 of 4 customers found this review helpful)

           
          5.0

          POWERFUL

          By KFLO

          from Chicago, IL

          About Me Professional Musician

          Verified Buyer

          Pros

          • Easy To Use
          • Excellent Sound
          • Portable
          • Powerful

          Cons

            Best Uses

            • Events
            • Performances

            Comments about Gallien-Krueger MB800 800W Ultralight Bass Amp Head:

            I bought this about 3 weeks ago, and so far, I am incredibly impressed. I don't own a car, and I transit everywhere, so portability is paramount. I'm running it through a MarkBass 2x12, 4 ohm cab, so I'm running at the full 800W. This thing KICKS! I've played some loud bars, and never had to go above 2:00 or so. Plenty of headroom, simple controls, and great GK tone (if you're into that sort of thing, which I definitely am). There is (confusingly) not a ground lift on the Direct Out, even though it's listed in the manual, but it's not a huge stumbling block. Everything else is well thought out, with sensible EQ controls, straightforward interface, and most importantly, tone for days. Honestly, I may have even overbought, as 500W might have suited me just fine, but no regrets...love everything so far.

            Comment on this review

            (15 of 15 customers found this review helpful)

             
            5.0

            IT'S WONDERFUL

            By BRAULIO

            from PUERTO RICO,US

            About Me Professional Musician

            Verified Buyer

            Pros

            • Easy To Use
            • Excellent Sound

            Cons

              Best Uses

              • Professional Recording

              Comments about Gallien-Krueger MB800 800W Ultralight Bass Amp Head:

              SIMPLY IT IS THE BEST THING THAT I HAVE BOUGHT IN Years.

              Comment on this review

              (11 of 11 customers found this review helpful)

               
              5.0

              Still lugging' that 30 lb head ?

              By NHBC Praise Band

              from Vallejo, Ca

              About Me Professional Musician

              Pros

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

              Cons

              • None

              Best Uses

              • Events
              • Performances

              Comments about Gallien-Krueger MB800 800W Ultralight Bass Amp Head:

              For optimum performance use the GK 4-conductor Speakon
              cable into a GK 410MBE 4 ohm cab. And with a Rock & Roller RR12 cart,
              you make one (1) trip from the van to the stage.

              Comment on this review

              (24 of 24 customers found this review helpful)

               
              5.0

              Big sound, small package

              By Too Old To Mention

              from London, Ontario, Canada

              About Me Experienced

              Pros

              • Clean Headroom
              • Easy To Use
              • Excellent Sound
              • Flexible Eq
              • Good Warmth
              • Portable
              • Powerful

              Cons

                Best Uses

                • Events
                • Performances

                Comments about Gallien-Krueger MB800 800W Ultralight Bass Amp Head:

                If it was rack mounted and weighed 50lb, this thing would still be impressive. Just heavy enough to not dance around on top of my cabs.

                Massive low end, easily sculpted w/4 band EQ. Huge punch and headroom, benches at over 1000 watts, and never gets hot. Doesn't cut out when slammed hard, like some micros (cough Ampeg cough). Fans run occasionally when the amp is idle, but don't intrude on the gig, even during acoustic sets. Lighted knobs are a nice touch on a dark stage.

                Typical G-K "grind" with controls at noon, but nix the contour, back the treble off a bunch, push hi and lo mids slightly and roll off a hint of bass, and it's ruler-flat. The King Of Clean, less wooly and fizzy compared to the 700RB and 1001RB. Hi-fi in a good way, yet it can still do fat, old-school studio tones.

                G-K should get more credit for the discrete-component FET preamp in this one. Sounds less solid-state than the MB200 and MB500, and for the first time in years, I don't miss a tube front end. About the only thing it doesn't cover, is tube distortion. Lots of pedals for that, of course.

                DI isn't quite at plush-sounding as my Genz Benz Streamliner 900, but still excellent. I was skeptical of the auto ground lift at first, but it works well in halls with noisy AC.

                It would be nice if the construction screamed quality like my Genz, but in decades of playing out, no-one has ever asked to fondle my amp, so what does it matter?

                Comment on this review

                (13 of 13 customers found this review helpful)

                 
                4.0

                MB800 Big Sound

                By Rockabilly Bass 1

                from Michigan, USA

                About Me Experienced

                Verified Buyer

                Pros

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

                Cons

                • No Ground Lift On The Xlr

                Best Uses

                  Comments about Gallien-Krueger MB800 800W Ultralight Bass Amp Head:

                  This is an incredible sounding LOUD amp and the small size makes it super easy to transport. I have not noticed the fans being excessively loud as some reviewers have noted. The only problem honestly with the amp is there is NO ground lift switch for the XLR out. The manual says there is one and even has a picture describing it's function but the amp doesn't have it. If you're plugging into a PA you will typically need a ground lift switch for the XLR out or you will get buzz. Other than that this head is very nice. Sounds just as loud as the GK 1001-RBII but MUCH lighter.

                  Comment on this review

                  (3 of 26 customers found this review helpful)

                   
                  1.0

                  Disappointed

                  By Marginmonster

                  from Tustin, CA

                  About Me Professional Musician

                  Pros

                  • Portable

                  Cons

                  • Poor Sound Quality

                  Best Uses

                  • Performances

                  Comments about Gallien-Krueger MB800 800W Ultralight Bass Amp Head:

                  I have appreciated the tone and versatility/quality of Gallien Krueger gear for many years. I was very disappointed in the MB800. The faceplate was molded weird and had flaws I would not expect from a QC'd product sold to customers. After turning the amp on, I heard loud whining from ceiling fans in the room. Basically the amp is not well sheilded and picked up any noisy electical device near it. Finally, it was warm in the room and the fans kicked in to cool the amp. They were VERY noisy to the point where I would have trouble hold a telephone conversation in the same room. I do not believe this amp was defective and therefore the issues were all weaknessess in the design (challenges of making a Class D amp). I would look elsewhere, possible Mark Bass and see if they have similar issues with their gear. It's comparably priced, so it's an alternative I am looking at.

                  Comment on this review

                  (20 of 20 customers found this review helpful)

                   
                  5.0

                  A lot of guts in a small package!

                  By ajpaul

                  from Highland, NY

                  About Me Experienced

                  Pros

                  • Easy To Use
                  • Excellent Sound
                  • Good Warmth
                  • Light weight package
                  • Portable
                  • Powerful

                  Cons

                  • Too light

                  Best Uses

                  • Performances
                  • Small and large venues

                  Comments about Gallien-Krueger MB800 800W Ultralight Bass Amp Head:

                  Wow, just as I read in earlier reviews, this micro amp has stronger bass and overall power output than my previously used GK 1001. Still getting used to it. It is a very nice piece and saves 13 lbs in my rig!

                  Comment on this review

                  Displaying reviews 1-10

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