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Gallien-Krueger MB200 200W Ultra Light Bass Amp Head 

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With a substantial 200W of power, a tiny footprint, and a mere 2-lb. weight, the MB200 makes signature GK tone completely portable! Use the MB200's 4...Click To Read More About This Product

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OVERVIEW

The ultimate in grab-and-go bass amplification.

With a substantial 200W of power, a tiny footprint, and a mere 2-lb. weight, the MB200 makes signature GK tone completely portable!

Use the MB200's 4-band EQ with contour switch to shape whatever tone your ears seek. It's stage- and studio-ready with an XLR direct out with pre/post EQ selector. Also offers an aux input, headphone/line out, and Speakon out for your cab.

FEATURES
  • 200W @ 4 ohms
  • Digital power amp
  • 4-band EQ with contour switch
  • XLR direct out with pre/post EQ switch
  • Aux input
  • Headphone/line out
SPECIFICATIONS

MB200 200W Ultra Light Bass Amp Head

  • 2 lb.
    Width: 7-3/4"
    Depth: 8"
    Height: 1-3/4"
Reviews
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Review Snapshot

by PowerReviews
Gallien-KruegerMB200 200W Ultra Light Bass Amp Head
 
4.7

(based on 37 reviews)

Ratings Distribution

  • 5 Stars

     

    (31)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

93%

of respondents would recommend this to a friend.

Pros

  • Portable (14)
  • Easy to use (13)
  • Excellent sound (12)
  • Good power output (8)
  • Warm / comfy (8)

Cons

  • Limited functions (3)

Best Uses

  • Performances (10)
  • Amateur recording (6)
  • Outdoor events / games (6)
  • Home studio (5)
    • Reviewer Profile:
    • Experienced (9), Professional musician (5)

Most Liked Positive Review

 

Need a spare or coffee house head? Here!

I've always owned two bass heads so I'd have a backup.

Recently, I acquired a somewhat capable combo, so felt it was time to ditch the spare head. Read complete review

I've always owned two bass heads so I'd have a backup.

Recently, I acquired a somewhat capable combo, so felt it was time to ditch the spare head.

This plan was a dumb idea, since hauling around a large combo with my rig, was not practical. I needed something small; like a doughnut spare that most cars have. It didn't have to be as capable as my main bass head, but had to be just enough to get me through any gig.

Enter the GK MB200

PROS:
-This amp is tiny, light, and will fit into the pocket of most gig bags.

-The tone is what floored me. It has an aggressive, punchy, tight sound that makes my main head seem ho hum.

-I'm in a KISS tribute band. This little amp got me easily through a gig when my main amp started having issues. It had plenty of juice, nicely powered one of my cabs, and I occasionally use it at rehearsals now.

-The EQ is simple, and easy to dial in on the fly.

-The price is right for a quality piece of gear.

-The fan is quiet.

CONS:
-Speakon is the only speaker output on this amp. My main amp has banana jack and ¼".

-My main amp has an efx loop that I use with my rack tuner for muted tuning. This amp just has line out and a return, but the return is 1/8" jack.

-The power cord that it came with didn't securely seat into the amp's electrical socket. I swapped out the cord, and no further issues.

-If you're one of those who likes parametric EQ's, this amp may be too simple for your taste.

-It can really only power one of my 410 cabs. My main amp can power both.

-The biggest advantage and disadvantage this amp has is its size. While small, light, and easy to transport, it can also be easily stolen at a gig. However, if rack ears are purchased, it can be racked. A nice idea, but placing this amp in a bulky rack defeats the purpose of owning a micro head.

I'm happy with my new spare amp. It gives me exactly what I need, and it is way more powerful than I anticipated. I am so impressed that I plan swapping out my main amp with the MB200's 800 watt big brother.

VS

Most Liked Negative Review

 

Good Tone, but Too Noisy to Keep

In that I was ultimately dissatisfied to the degree that I decided not to keep the amp, again, I have to personally give it a "Terrible" rating. Again, setting aside...Read complete review

In that I was ultimately dissatisfied to the degree that I decided not to keep the amp, again, I have to personally give it a "Terrible" rating. Again, setting aside the noise level issue I experienced, I took it a rehearsal and small bar gig, and it did well. I play classic rock next to a loud drummer, and in that situation, the MB200 was capable a produced a great sound. In terms of wanting to carry it as a back-up and use it at home for practice, I could not accept the noise level.
The feature set on this amp is nice, but expectedly and appropriately limited, considering its size and price class. The lack of a master volume or mute feels overly limiting in certain situations. The basic set of tone controls can be looked at as refreshing and offers a great range of usable sounds. The contour switch brings you immediately to a nice, fat, rich bedroom tone. Not so great in a band situation but a great sound for practice. A really nice feature is that the line-in goes through the speaker output, giving you the option to do heaphone or speaker practice. Other amps that I'm aware of limit line-in to headphone out.
I believe the overall quality of construction of this amp is decent, but I give it a "Terrible" rating due to the hiss noise level I experienced. I noticed a significant hiss noise was always present, whether cabinet or headphone, even with the gain at 0. I exchanged the first one I got and found the same problem with the second unit. I have returned the second one for refund.
Setting aside the noise problem, this is a great price.

Reviewed by 37 customers

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(12 of 16 customers found this review helpful)

 
5.0

MB200 - great amp, except for the EQ

By andy

from Undisclosed

Comments about Gallien-Krueger MB200 200W Ultra Light Bass Amp Head:

My one problem with it is the EQ setup. This head fixes a lot of the problems with the old 400RB heads like the useless preset buttons, the boost knob, how easy it was to break pot shafts, etc. But the frequency centers and Q factor on the eq is just nowhere near as musical as the EQ section on older 400RB heads. The high EQ doesn't do much of anything and the low is loose and muddy sounding. With passive basses, unless I'm going for a vintage sound with the contour switch engaged (love the contour switch) I have to use a pedal to get a useable EQ.
That other reviewer doesn't know what he's talking about. The speaker connection jack works with both speakon and 1/4". Mine is plugged in with a 1/4" right now.
The roll bars on the front to protect the knobs are a nice touch. I don't worry about putting it in the side pocket of my bass bag. Which is good because its best feature is that it fits in the side pocket of the f'ing bag!
This little amp sounds good, and is so small and light weight it has made loading in and out of gigs a lot easier. I've used it on dozens of jobs in the last 6 months with a variety of cabinets and it has been great.

(11 of 20 customers found this review helpful)

 
3.0

the Docs are out of date

By Henry Williams

from Athens Georgia

Comments about Gallien-Krueger MB200 200W Ultra Light Bass Amp Head:

I'll let you know when I can connect it.
Just wanted to alert potential buyers that the speaker jack is not compatible with 1/4 jacks. There was an addendum to the owner's manual in the box. This important change in specs should've been communicated on the G-K website or the retailer's description. If I could plug it into the speaker I could give it a review.

Be sure you get a speakon cable.

(9 of 9 customers found this review helpful)

 
5.0

The answer to a bass player's prayers

By Peglegacy

from Los Angeles

Comments about Gallien-Krueger MB200 200W Ultra Light Bass Amp Head:

I can't compliment this unit enough. It is everything I had hoped. I was looking for a low-cost, low-weight alternative my ?go-to? 100+ lbs SVT-II rack. I knew that it wasn't going to sound like a tube Ampeg or Boogie, but I just wanted a great ?thick but tight? tone for playing clubs and rehearsing. Right out of the box (with the contour control on & EQ knobs all flat) my P-Basses sounded as sweet as they did thru my old GK 800RB. It fits in the pouch of my soft bass case and pumped righteously thru my 4x10? cab. Bottom line? This micro beast is a game-changer. It?s a Chihuahua-sized bass amp that roars like a lion! Please be aware that it does NOT have an effects loop, but for my purposes it doesn?t need one. This amp has a proud, tight, rich tone at a small fraction of the price of my beloved all-tube SVT. A great bass sound doesn?t hafta come with a hernia anymore. GK so ?gets? that?

(9 of 9 customers found this review helpful)

 
5.0

G-K lives up to it's "Tools, not Toys" philosophy

By Tony D

from Dallas, TX

See all my reviews

Comments about Gallien-Krueger MB200 200W Ultra Light Bass Amp Head:

This G-K MB200 bass amp works for me. Playing through a 1x15 Altec-Lansing 421B vintage speaker mounted in a G-K Backline cab, the sound reproduction through this mighty midget is powerful, precise, and punchy. My flatwound P-bass, with the contour on, sounds like an old school juke box; fat, full, and in your face. My "boutique" 4 string active-passive sings with articulation and resonance. The Schecter 5 string sounds growly and full. It handles the low B effortlessly, with no dips or peaks throughout the full range of notes. It's loud enough to use in small outdoor venues without having to go through the front system, and works very well in dance club settings.

I use the bbe Sonic Stomp, and this unit doesn't have an effects loop, but it works just as well running the signal through the bbe to the amp input. The only other problem I had was keeping the amp from vibrating off the speaker cab, but was solved by putting it on a small bath towel. Not just an amp, the MB-200 is an extension of my instrument, and responds to the most subtle nuances, yet pushes like a diesel when the music calls for power and drive. I like it!

(7 of 7 customers found this review helpful)

 
5.0

Follow up to previous review

By falcon1

from Pacific Northwest

About Me Professional Musician

See all my reviews

Ask me a question

Pros

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

Cons

    Best Uses

    • Events
    • Performances

    Comments about Gallien-Krueger MB200 200W Ultra Light Bass Amp Head:

    As a follow up to my previous review: This last Saturday my band played at the Craterian in Medford Oregon, Southern Oregon's premier events venue. It was a sold out show, so the place which has a balcony and theater style seating basically all the way to the large stage had plenty of bodies to absorb sound. I use an American made Jazz bass (S1 switch engaged)and an MB 200 going through a NEO 210 daisy chained to a NEO 115. All the controls are pretty much straight up, contour switch off. At the mid-afternoon sound check the sound guy commented on my amazing full tone, and had me turn "down" the stage volume. I was only at 1:00 on the master and 11:00 after he had me turn down. Short of an outside stadium show, this was probably the best test of this amps ability to step out front of the "back-up" label. I still own and could have used an Ampeg classic tube head and 810 set up, but never doubted this amp.

    (7 of 8 customers found this review helpful)

     
    5.0

    Need a spare or coffee house head? Here!

    By Todd-m7O6z

    from Boca Raton, FL

    About Me Experienced

    See all my reviews

    Ask me a question

    Verified Reviewer

    Pros

    • Easy To Use
    • Excellent Sound
    • Great price
    • Portable
    • Powerful

    Cons

    • Easily Stolen
    • Limited Functions
    • Speakon Only Output

    Best Uses

    • Amateur Recording
    • Events
    • Home Studio
    • Performances
    • Spareemergency Amp

    Comments about Gallien-Krueger MB200 200W Ultra Light Bass Amp Head:

    I've always owned two bass heads so I'd have a backup.

    Recently, I acquired a somewhat capable combo, so felt it was time to ditch the spare head.

    This plan was a dumb idea, since hauling around a large combo with my rig, was not practical. I needed something small; like a doughnut spare that most cars have. It didn't have to be as capable as my main bass head, but had to be just enough to get me through any gig.

    Enter the GK MB200

    PROS:
    -This amp is tiny, light, and will fit into the pocket of most gig bags.

    -The tone is what floored me. It has an aggressive, punchy, tight sound that makes my main head seem ho hum.

    -I'm in a KISS tribute band. This little amp got me easily through a gig when my main amp started having issues. It had plenty of juice, nicely powered one of my cabs, and I occasionally use it at rehearsals now.

    -The EQ is simple, and easy to dial in on the fly.

    -The price is right for a quality piece of gear.

    -The fan is quiet.

    CONS:
    -Speakon is the only speaker output on this amp. My main amp has banana jack and ¼".

    -My main amp has an efx loop that I use with my rack tuner for muted tuning. This amp just has line out and a return, but the return is 1/8" jack.

    -The power cord that it came with didn't securely seat into the amp's electrical socket. I swapped out the cord, and no further issues.

    -If you're one of those who likes parametric EQ's, this amp may be too simple for your taste.

    -It can really only power one of my 410 cabs. My main amp can power both.

    -The biggest advantage and disadvantage this amp has is its size. While small, light, and easy to transport, it can also be easily stolen at a gig. However, if rack ears are purchased, it can be racked. A nice idea, but placing this amp in a bulky rack defeats the purpose of owning a micro head.

    I'm happy with my new spare amp. It gives me exactly what I need, and it is way more powerful than I anticipated. I am so impressed that I plan swapping out my main amp with the MB200's 800 watt big brother.

    (6 of 6 customers found this review helpful)

     
    5.0

    So impressive

    By falcon1

    from Pacific Northwest

    About Me Experienced

    See all my reviews

    Ask me a question

    Pros

    • Great Gk Tone
    • Portable
    • Useable Tone Knobs

    Cons

      Best Uses

        Comments about Gallien-Krueger MB200 200W Ultra Light Bass Amp Head:

        I own an Ampeg Classic tube amp and go through the Ampeg 810 fridge or a 410 HLF. Like many others who discovered the GK MB series, I was looking for alternatives to the cumbersome amps and cabinets. I decided since I was "experimenting" with the Class "D" amps I would start with the least expensive GK amp. For over 30 years I've only played Ampeg or GK. I also purchases a GK NEO 1x15. Sorry to say my Ampeg set-up is no longer needed. Not to say I wouldn't use it in a stadium, but with the purchase of one more GK Neo 1x15 daisy chained, I get all the punch I'll ever need out of this flyweight MMA fighter. I appreciate the Spartan useable controls as well as the fact that they actually make a desired difference when used. Too many amps out there have 11 knobs and one tone. A flip of the contour to *on* and I get great slap tones, flip it off and there's the GK midrange growl I love without changing the tone controls. I circumvented the issue of it vibrating off by looping a large (rubber band?) through the handle of the cabinet and around the amp. I actually get butterflies again when I'm gigging and get to use this set-up. With the two Neo 1x15's it changes to the 4 ohm power and sounds absolutely amazing. BTW this is the first time I've ever used 15's, and I see why they have always had a place, but that's another review. Thank you Gallien Krueger!!

        (6 of 6 customers found this review helpful)

         
        5.0

        Superb value and sound

        By Ira McDonald

        from Northern Michigan

        See all my reviews

        Comments about Gallien-Krueger MB200 200W Ultra Light Bass Amp Head:

        Superb!
        I used this amp (with an excellent mixer) to drive PA mains at a recent gig - I set all tone controls to flat - numerous audience members commented on the best ever sound quality.
        Very loud for the rated power - I set the gain to '2' the whole night!
        This amp has now joined the small set of sound essentials that never leave my car (except to be used in gigs). It's packed in the outside pocket of my mixer bag!
        Two pounds and very small, but killer sound quality and clarity.
        4-band tone controls w/ sensible center frequencies.
        Contour switch and 10db pad switch are nice touches.
        Switchable headphones/line out.
        Switchable pre/post-EQ on XLR direct out.
        Power light changes color during warmup or overload/short recovery - very nice.
        One mistake - G-K *did* replace the former hybrid Speakon and 1/4" speaker output with a straight Speakon (requiring an adaptor for all older speaker cabinets) - the manual now comes with an errata page about this change.
        Built like a fine sports car. Sturdy metal case. Solid knobs are very readable at a distance. G-K only makes good stuff.
        Worth three times the price!

        (5 of 5 customers found this review helpful)

         
        5.0

        Every bass player should have one

        By NGC

        from ATL

        About Me Experienced

        Pros

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

        Cons

        • Limited Functions

        Best Uses

          Comments about Gallien-Krueger MB200 200W Ultra Light Bass Amp Head:

          So, let's get this out of the way. The description above is wrong. This is not a digital power amp. It is a misnomer that Class D stands for Digital. "D" is nothing more than the letter that follows "C" in the alphabet and does not denote "digital". Class D is analogue just like traditional A/B amps. A SMPS acts in an on/off, "switch" like manner, but this is still an analogue power amp. Your signal is not converted to a digital bit stream.

          I've had this amp for a couple of years now. Mine had the high pitched hum issue, but after a round trip to Cali to visit GK it is now perfectly silent. In fact, this is the quietest amp I've ever owned.

          The MB200 has a lot of power for a tiny, 2 pound, 200 watt micro. It drives my cabs hard and sounds great too. Given sufficient cabbage this head will get you surprisingly loud.

          The tone is very Gallien-Krueger. Good, warm tone with a little grit and a scooped, bass heavy GK eq. It doesn't take much knob twirling to get a good tone out of this head.

          Other cool features include the CD/MP3 input and the ability to use the amp with no cab, just headphones. This makes the MB200 a great practice tool that can fit in the pocket of your gig bag.

          (5 of 5 customers found this review helpful)

           
          5.0

          Incredible !!!

          By Bobby

          from Myrtle Beach,SC,USA

          About Me Professional Musician

          Pros

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

          Cons

            Best Uses

            • Performances

            Comments about Gallien-Krueger MB200 200W Ultra Light Bass Amp Head:

            First off,I'm not a bass player.i'm a pedal steel guitarist since 1975.In my playing career,i've owned amps that were and still are "Standard of the industry"for steel guitar pickers.They often come in a large & heavy package.I came across some posts on the Steel Guitar Forum with high praise for this amp & decided to try one.A lot of us older players(I'm 60)just don't want to carry all that weight anymore,esp.if you play a not so lightweight steel or double on guitar & are carrying a guitar amp as well.(i take along a Fender Deluxe for my Tele)I'm running this amp with a 112 cabinet & a reverb pedal.This is the best pedal steel tone i believe i've ever had!Bottom end is deep but punchy with low notes well defined,mids are excellent,no "honkieness",highs are sweet and clear without being piercing.Overall,through the whole range of notes on my Rains SD-10,i get exactly what i'm looking for or should i say,listening for.Bass players,if you're using the MB-200 & play in a band with a steel player that's "fighting" their amp for the tone they want,please,turn them on to this!Just a note here,if you are looking for a way to safely transport your MB,the Musician's Gear Hardshell Harmonica case @$44.99 is a worthwhile investment.I already had one & discovered that it fits the MB as if it were designed for the amp.It fits snugly with room where the removable harp trays go to store the power cord,instrument/speaker cables & my reverb pedal comfortably!Thanks G-K and Musician's Friend for great products & excellent customer service !!!Bob Poole/Johnny Owens & The Rounders

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