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Gallien-Krueger MB 112-II UL 1x12" 200-Watt Bass Combo Amplifier


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  • 200-watt portable combo amplifier with digital power amp design
  • Four-band active EQ section allows you to shape and mould your tone
  • Chain output allows you to connect to GK MBP powered cabinets
  • Headphone output allows you to practise in silence
  • Auxiliary input enables connection of external audio sources such as smartphone or MP3 player
  • Balanced direct output - equipped with pre-/post- EQ switch - for sending signal directly to PA input
  • Contour control decreases mid-range frequencies whilst boosting low and high frequencies
  • -10dB pad switch for use with basses equipped with active pickups
  • Contour switch decreases mid-range frequencies to create a scooped-out frequency curve
  • Gain control sets preamp gain to enable a warm overdriven energy
  • Lightweight design with a rugged chassis to offer maximum protection
  • Includes power supply and owner's manual
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Delivery & Returns

Delivery to UK mainland addresses* is FREE on orders over £75 and up to 30kg. (As a guide, a standard electric guitar weighs approx. 3-5kg).

Delivery on orders below £75 are charged at £4.45!

Delivery to Northern Ireland, the Scottish Highlands & Islands, Isle of Man, Isle of Wight, Channel Islands and the Republic of Ireland. is weight dependant and will be indicated at the checkout

Delivery above 30kg to ANY location will vary according to weight and will be indicated at the checkout

LocationPriceStandard Delivery
UK mainland*FREE on orders over £75 £4.45 on orders under £751-3 working days
Northern Ireland, Scottish Highlands & Islands Isle of Man Isle of Wight Channel Islands Republic of Ireland£12.95 – any order value up to 30kg Over 30kg - please call1-3 working days
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The Gallien-Krueger MB 112-II UL 1x12" 200-Watt Bass Combo Amplifier is a highly practical combo amplifier that is great for a wide range of performance applications.

200-Watt Powerhouse

The MB 112-II features all digital circuitry to produce its impressive 200-Watt output, which gives it an enormous amount of power and dynamic range to play with. Inside the cabinet is a single 12-inch speaker, which translates the energy created by the internal circuitry with stark articulation. As a standalone performing tool, the MB 112-II easily packs enough power to see you through most gigging applications. However, if you want to inject greater power into your live rig, the Chain Out connection on the rear of the amp allows you to connect directly to Gallien-Krueger's MBP powered cabinets.

Front Panel Controls

The front panel is home to the instrument input, which has a -10dB pad switch to reduce hot signals from active instruments or other high input sources. Next to the pad switch is a Gain pot, which can be used to introduce some preamp gain to the input for an overdriven tone. It can also be used alongside the pad switch to optimise the amp's headroom. The Contour switch scoops-out the midrange frequencies, accentuating the low-end and upper frequency ranges.

Four Band EQ

The MB 112-II boasts GK's legendary four-band EQ, which allows you to acutely attenuate: Bass, Low-Mid, Hi-Mid and Treble frequencies to sculpt and carve your tone to suit a wide range of musical styles.

The Bass control enables a +10dB boost or cut around 60Hz to create a much fatter low-end energy or tighten things up for a controlled low-end pop. The Low-Mid control boosts and cuts around 250Hz by +6dB/-10dB, allowing you to accentuate the depth of clarity of your overall tone. The Hi-Mid control boosts and cuts at the 1kHz range, which allows you to hone in on your lower string harmonics to deliver greater punch to your tone. The Treble control boosts and cuts at 7kHz, which allows you to soften the upper frequencies and remove high-end pop or definition - particularly useful for when you want to soften the response of your slapping technique.


The balanced direct output XLR jack connects the MB 112-II directly to a PA system. The Auxiliary In jack, which allows you to connect an external audio source (e.g. MP3 player) so that you can practise and play along with your favourite songs. If you're performing solo, it is a great way to play with a backing track. The headphone output allows you to practise in silence, great for late night sessions at home or on the road.


The MB 112-II is lightweight and easy to transport, making it the perfect go-to amp for practise, jam sessions, and small gigs. Gallien-Krueger has gone to every effort to ensure it is as solid as a rock, and you can rest assured that this little beauty has your tone covered no matter what.

The Gallien-Krueger MB 112-II UL 1x12" 200-Watt Bass Combo Amplifier is a fantastic performance partner that you will never tire of bringing along to every gig. It is portable, powerful, adaptable, expandable, and is as reliable they come - perfect for both amateur and professional applications.

ModelMB-112-II UL 1x12" 200-Watt Bass Combo Amplifier
Dimensions (H x W x D) 406.4 x 381 x 431.8 mm
Output Power200W @ 4 Ohms
Input Section Maximum Input Level: 0.6V Rms
Input Impedance: 1M Ohms
Direct Output Impedance: 500 Ohms
Aux In Impedance: 100K Ohms
Equalizer Bass: +/-10dB @ 60Hz
Lo-Mid: +6dB/-10dB @ 250Hz
Hi-Mid: +6dB/-10dB @ 1KHz
Treble: +/-14dB @ 7KHz
Voicing FiltersContour: +2dB @ 50Hz / -10dB @ 500Hz / +3dB @ 7 KHz
Noise-90 dB reference to 200W, “A” Weighted
Amplifier Protection Full short circuit, thermal and RF protection.
Stable into reactive and mismatch loads.
Five second muted warm-up.
Power Requirements240W (Full Power)
Speaker 1 x 12"
Controls Gain
Four-Band EQ: Treble, Hi-Mid, Lo-Mid, Bass
Connectivity Instrument Input
Aux In
Headphones Output
Direct Out (XLR)
Chain Out - For use with GK MBP Series Powered Cabinets Only
Included Accessories Power Supply
Owner's Manual
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