Gallien-Krueger MB200 200W Ultra Light Bass Amp Head  

Not a lot of features on this one but does what its meant to do very well.

no problems,

Great Amp for the money.

Playing though a black widow 15", sounds great smooth, responsive on highs and lows. Perfect for small to medieum gigs and proctice. And so light and small, its amazing, fits right in my gig bag. My only compaint is the speaker out. I read the manual before I bought which says it has a combo speakon & 1/4" speaker out. It only has speakon connecter. so you may need a spekon to 1/4" cable or adapter.

*Plenty of power for the size.   Used with an Ampeg 4x10 4Ohm cab and active bass for a band with four horns, and it worked out just fine.  

*Nice to have four-band equalizer

*Has all basic controls and input/output jacks that you need for most applications.

*It only takes Speakon,  no  ¼” plug.   GK recently changed this, and I had to buy an adapter to use it with older speaker cabs.

*The first unit had a problem of shutting down when it got hot, and I had to send it back for a replacement.   I had a similar problem with my other GK RB head.

*Very small and light indeed.  It’s just unbelievable.

*Sturdy aluminum construction that can take beating. 

Great value for the price.

I purchased it as a backup and practice amp, but I don’t hesitate to use this for gigs at small venues.   It’s nice to be able to pack light!    I recommend purchasing a carrying case from GK web site.

-Simple and straightforward controls.  Very nice features for the price!

-Its nice to have 4-band EQ for tighter tone shaping

-Contour switch adds a nice tonal switch quickly by scooping the mids.

-Great to have direct XLR output for recording with my band in the studio!

-Really nice to have a headpones jack (also line out capable) for silent rehearsal

-Aux in is nice for jamming along with my ipod

A few minor cons:

-Only has one output for a speaker cab, so it can't drive two cabs at once. (not a problem for me, only having one cab - Acoustic B115)  Though now looking at it, the line out might be able to drive a second cab.

-The speaker output is Speakon only, not a 1/4 and Speakon combo, like the description says.  I had to buy an adapter (Planet Waves) for my patch cable (Planet Waves 3').  At least the adapter works great!

Great quality

Very well built for how light it is!

Very Loud for its tiny size

GK has a great quality reputation, and they hold it up.

This is my first amp head, and I'm on a slim budget.  The value is fantastic.  I'm glad I decided to go with this new amp and not settle for a crappy used one for the same price!

200 watts and less than 3 pounds in weight is totally worth it!  So nice not to lug a monster around!

No other head in the price range compares.

Overall, I love it.  The MB200 emits awesomesause.  It kicks hard for such a little guy.

I am completely satisfied with the sounds and tone I've been getting, the quality, value, and woopass-to-weight ratio.  The only minor downside is a slight lack of features, but I don't really mind, and only so many features can be packed into such a small amp anyways.

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.

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.