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Gallien-Krueger MB150S-112III 150W MicroBass Combo Amp 

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You'll marvel that an amp as small as the Gallien-Krueger MB150S-112 MicroBass Combo Amp can sound this great. 150W RMS combo with a heavy-duty 12" s...Click To Read More About This Product

Available 04-21-2017

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OVERVIEW

There's nothing micro about this amp's sound or abilities!

You'll marvel that an amp as small as the Gallien-Krueger MB150S-112 MicroBass Combo Amp can sound this great. 150W RMS combo with a heavy-duty 12" speaker and a host of pro features packed into a rugged, all-metal cab that weighs only 24 lbs. and fits into an overhead luggage compartment. Perfect for small gigs, rehearsals, or studio. Or mount on a stand as a personal monitor and use direct outs to feed PA or recording. For larger stage performances, switch off internal speaker, plug into 2 - 8-ohm cabs, and you're ready to rock. Features a 4-band EQ and a user-activated limiter to eliminate distortion. 1-year warranty on speaker. 2-year warranty on electronics.

FEATURES
  • 150W RMS of pure power
  • Heavy-magnet 12" driver
  • Tough all-metal cab
  • 4-band EQ
  • 1 year warranty on speakers
  • 2-year warranty on electronics
Reviews
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Review Snapshot

by PowerReviews
Gallien-KruegerMB150S-112III 150W MicroBass Combo Amp
 
4.7

(based on 29 reviews)

Ratings Distribution

  • 5 Stars

     

    (22)

  • 4 Stars

     

    (6)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Excellent sound (5)
  • Portable (5)
  • Warm / comfy (5)
  • Easy to use (3)
  • Good power output (3)

Cons

No Cons

Best Uses

  • Home studio (3)
  • Performances (3)
    • Reviewer Profile:
    • Experienced (4)

Most Liked Positive Review

 

Versatile amp.

I use this amp with an active, five-string electric and an upright bass. With the electric I engage the 14dB pad to prevent overloading. It handles a loud, low-B string without bottoming out...Read complete review

I use this amp with an active, five-string electric and an upright bass. With the electric I engage the 14dB pad to prevent overloading. It handles a loud, low-B string without bottoming out the speaker. The eq is very powerful and not much, if any, tweaking is required--the amp sounds great with the eq set flat. With the limiter on and full up, this amp goes very, very loud without overloading. I just really like the sound and punch from this 100W transformer-based amp vs. higher-Watt-rated, SMPS/Class D amps. For the upright, I run a Shure Beta-57 (wrapped in a cloth under the tailpiece) through a Shure transformer-adapter (balanced to 1/4" unbal.), roll of the treble and high-mids a little, and get plenty of volume for coffeehouse gigs (I don't like piezos). It is quiet, very small, and at 26 pounds it is easy to transport. Highly recommended.

VS

Most Liked Negative Review

 

Well built but very muddy.

This amplifier is well built, portable, and loud; but it is also very limited in tone. The tones are either muddy or chirpy. There seems to be no high mid response and...Read complete review

This amplifier is well built, portable, and loud; but it is also very limited in tone. The tones are either muddy or chirpy. There seems to be no high mid response and very undefined low mids. The highs are brittle and harsh. These symptonms worsen as you increase the volume. I have used a german Warwick Corvette, MIM Fender Jazz, and MIA Fender P with this amp and have yielded similar results. If you are looking for something portable with similar wattage, I would recommend something with more speaker like a 2x10", 1x15", etc. You will have more headroom throughout the frequency range.

Reviewed by 29 customers

Displaying reviews 1-10

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(5 of 5 customers found this review helpful)

 
5.0

Versatile amp.

By Doubler

from Oklahoma City

About Me Experienced

See all my reviews

Pros

  • Excellent Sound
  • Good Warmth
  • Portable

Cons

    Best Uses

    • Home Studio
    • Performances

    Comments about Gallien-Krueger MB150S-112III 150W MicroBass Combo Amp:

    I use this amp with an active, five-string electric and an upright bass. With the electric I engage the 14dB pad to prevent overloading. It handles a loud, low-B string without bottoming out the speaker. The eq is very powerful and not much, if any, tweaking is required--the amp sounds great with the eq set flat. With the limiter on and full up, this amp goes very, very loud without overloading. I just really like the sound and punch from this 100W transformer-based amp vs. higher-Watt-rated, SMPS/Class D amps. For the upright, I run a Shure Beta-57 (wrapped in a cloth under the tailpiece) through a Shure transformer-adapter (balanced to 1/4" unbal.), roll of the treble and high-mids a little, and get plenty of volume for coffeehouse gigs (I don't like piezos). It is quiet, very small, and at 26 pounds it is easy to transport. Highly recommended.

    (4 of 4 customers found this review helpful)

     
    5.0

    great upright amp

    By Anonymous

    from Undisclosed

    Comments about Gallien-Krueger MB150S-112III 150W MicroBass Combo Amp:

    This amp seems like it was made for upright bass. With this amp I can drive a big band, any size combo, and it even gives great full tone while bowing. It will boom in the low register without clipping, and without changing your EQ it will give you sweet, punchy tone in the high register, and it is incredibly portable and roadworthy. Anybody considering an amp for upright gigs should consider this piece of equipment.

    (4 of 6 customers found this review helpful)

     
    5.0

    Perfect Little Upright or Electric Bass Amp

    By rarebasses

    from SW Missouri

    See all my reviews

    Comments about Gallien-Krueger MB150S-112III 150W MicroBass Combo Amp:

    Transformed my junky Don't mess with the others, if your a bass switcher from upright to electric this is the tool for you! I run mine with the Conture switch out for electric and in for upright. I found that out he first week it will cause it to sound like two different amps. BUY IT!

    (4 of 4 customers found this review helpful)

     
    5.0

    Takes a licking keeps on ticking

    By cappttenron

    from Virginia

    See all my reviews

    Comments about Gallien-Krueger MB150S-112III 150W MicroBass Combo Amp:

    I have had this amp for about 6 years. Not only does it sound great its light and super portable. This amp was left in a basement during a hurricane and was under 6ft of water before I found it again. My other equipment there was destroyed. Took it into the shop for a clean up and its been running fine for the last four years. Mackie board and Carvin PA were DOA while this little gem was the only survivor.

    (4 of 6 customers found this review helpful)

     
    2.0

    Well built but very muddy.

    By leronious

    from Arizona

    Comments about Gallien-Krueger MB150S-112III 150W MicroBass Combo Amp:

    This amplifier is well built, portable, and loud; but it is also very limited in tone. The tones are either muddy or chirpy. There seems to be no high mid response and very undefined low mids. The highs are brittle and harsh. These symptonms worsen as you increase the volume. I have used a german Warwick Corvette, MIM Fender Jazz, and MIA Fender P with this amp and have yielded similar results. If you are looking for something portable with similar wattage, I would recommend something with more speaker like a 2x10", 1x15", etc. You will have more headroom throughout the frequency range.

    (3 of 3 customers found this review helpful)

     
    5.0

    Awesome for uprights

    By ibagoalie

    from chicago

    About Me Novice

    Pros

    • Excellent Sound
    • Good Warmth
    • Portable
    • Powerful

    Cons

    • Expensive

    Best Uses

    • Home Studio

    Comments about Gallien-Krueger MB150S-112III 150W MicroBass Combo Amp:

    I just started to learn the upright bass (mine is electric - NXdesigns) and after some research determined that GK was the preferred amp for upright players. At first I ordered the MB112 and while it was fairly small, it had an echo and hiss that drove me nuts. I worked with GK's support but was never able to resolve the issue to my satisfaction. Upon deeper research the MB150 microbass kept popping up on bass forums, but the hefty price tag was making me hesitate. However, when I thought about how I payed for my bass, I figured I should get a better amp. So I exchanged the MB112 in and ordered this one. It is fantastic! No hiss, no echo and sounds so smooth. Highly recommend for all upright bass players.

    (3 of 4 customers found this review helpful)

     
    5.0

    One Bass amp you have to own

    By Anonymous

    from Undisclosed

    Comments about Gallien-Krueger MB150S-112III 150W MicroBass Combo Amp:

    Awesome overall bass amp for it size, weight and sound. Got me thru a lot of gigs plus lugging it to gigs was a snap because I have a Gig Bag which I could the amp on my shoulder. If I need more volumne, just mike or direct box to the PA, no problem.Also, great resell value!

    (3 of 3 customers found this review helpful)

     
    5.0

    Best Amp on the Market!!!

    By mastertone44

    from San Francisco, CA

    See all my reviews

    Comments about Gallien-Krueger MB150S-112III 150W MicroBass Combo Amp:

    This amp is definitely the best out there whether you are an electric bass player or plugging up your upright. I bought it a few months ago and absolutely couldn't be any happier.

    (2 of 2 customers found this review helpful)

     
    5.0

    Best amp I ever owned

    By Steve in MA

    from Dedham, MA

    Comments about Gallien-Krueger MB150S-112III 150W MicroBass Combo Amp:

    Nobody can believe the amount of sound this little amp puts out. I almost never need anything else, and when I do, sound guys love it 'cause it has both a direct and a line out. Now I show up at gigs with my bass on my back, my amp on my shoulder, and my effects rack in my hand - one trip!

    (2 of 8 customers found this review helpful)

     
    4.0

    Review

    By johnhrobiii

    from Undisclosed

    See all my reviews

    Comments about Gallien-Krueger MB150S-112III 150W MicroBass Combo Amp:

    I have owned the GK MB 150S a long time ago. The sound,controls and its lightweightness were great.BUT...I am no longer a fan because I have had serious issues with the cabinet.

    Displaying reviews 1-10

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