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Everything In Music Since 1958
Everything In Music Since 1958

Gallien-Krueger MB 115-II 200 Watt 1x15-Inch Bass Combo Amplifier

Original price $1,283.57
Original price $1,283.57 - Original price $1,283.57
Original price $1,283.57
Current price $899.00
$899.00 - $899.00
Current price $899.00
► New - ♫ In stock
Condition: New
About Inventory Status

Call or text us at 301-946-8808.

In stock: It is in stock and available to ship or pickup. Apparel must be shipped from another location and is not available for in-store pickup. We can usually ship or have these items available for pickup by the next business day if they don't require inspection, special handling, or setup. Our pickup location is 11151 Veirs Mill Rd. Silver Spring, MD 20902.

📆 Preorder: It is on the way to our warehouse. We can't predict when preorder items will arrive due to current supply chain issues. If you place an order for one of these items someone will contact you to estimate the delivery date.

Out of stock: We don't currently have it available but you're not out of luck yet. We still may be able to get it. If you order one of these items we will contact you with an estimated fulfillment date. You have the option to cancel the order if you change your mind.

Special order: The item is so special that it needs to be custom ordered for you. Some of these items are works of art and have to be made individually. Orders for special order items must be prepaid and we cannot accept cancellations or refunds.

█ Sold out: We don't think we can get this item because it was either discontinued by the manufacturer or was limited in quantity. If you want or need this item call or text us. Sometimes we can help you track down the item through other sources or help you find something similar.

About Item Conditions

Call or text us at 301-946-8808.

New: The item is brand new as received from the manufacturer with a full manufacturer warranty. Instruments such as guitars, snare drums, drum kits, brass and woodwind instruments may be opened for photography and quality control inspection and may not be in a factory sealed box.

Mint or Open Box: The item may have been opened and tested but has been repackaged. The original packaging may have superficial issues but the item itself and any originally included accessories are in perfect, like new condition.

Display Model: These items are so cool that we put them on display in our legendary shop. The condition is brand new as received from the manufacturer with manufacturer warranty. Rest assured, these items undergo a very careful inspection before shipping.

Demo: These items have been on our sales floor for demo purposes and will likely show signs of use. The original packaging may no longer be included, but you can be assured that you are receiving an awesome item and an awesome price.

Used: The item is used. These item may have varying degrees of wear. Please read the description for information about the condition of the item. Used items do not carry a warranty.

B or C Stock: Factory refurbished. These items were purchased from the manufacturer in a refurbished condition. They will show some cosmetic issues, but nothing that would impact performance. Being that these are sealed from the manufacturer, we generally do not open these to photograph the cosmetic issues. They are guaranteed to work and may have a limited warranty or you may purchase an extended warranty in some cases. Please see the listing description for item specific information.

Get Professional Performance in a Lightweight Package - The Gallien-Krueger MB 115-II 200 Watt 1x15-inch Bass Combo Amplifier

The Gallien-Krueger MB 115-II packs 200W into an ultra-light 38lb package.  The sound comes from a GK-built single 15" driver to give you great bass tone but in a combo amp that can go anywhere. Four band active EQ and contour based on the legendary 800RB provide extensive tone shaping capability. Effortless transport for rehearsals and 200 watts of power through the 1x15" speaker allow you to be heard in moderate size venues. Tough vinyl covering protected with metal corners provides lasting protection.

  • Four Band Active EQ
  • Ultra-Portable Performance
  • Custom Speaker Design
  • Enhanced Connectivity
  • Variable Q
  • Switch Mode Power
  • Internal Circuit Protection
  • Driver By GK
  • Ultra-Light Weight
  • Critically Damped Construction


Balanced DI with pre/post switch, aux in, and headphone output for silent practice plus --"chain out--" to drive GK's MBP-powered enclosures.

Variable Q

Inherited from the 800RB, this unique design varies the EQ bandwidth to retain a musical response even at extreme settings.

Switch Mode Power

Extremely lightweight switch-mode power supply and power amp deliver 200W into the speaker with very little wasted heat dissipation


Internal circuitry is always on the alert to problems, indicated at the power switch ring.

Driver By GK

Special driver with 2.5-inch edge wound aluminum voice coil, designed just for this cabinet, manufactured in the GK USA factory.

Ultra Lightweight

Internal bracing to ensure tone-robbing leakage of sound through the walls of the cabinet is minimized. Plywood construction, aluminum chassis, switch-mode power supply, and power amp deliver 200W performance in a rugged 38lb package.

Critically Damped

GK's design team tuned the ports for optimum performance while coupled to the cabinet's specific designed speaker. The ports coupled with a specific jute blend of damping material provide the right amount of damping at the right frequencies, for optimum response.


Input Section

  • Maximum Input Level: 0.6V rms
  • Input Impedance: 1M Ohms
  • Direct Output Impedance: 500 Ohms
  • Aux-in Input Impedance: 100K Ohms


  • Bass: +/-10dB@60Hz
  • Lo-Mid: +6dB/-10dB@250Hz
  • Hi-Mid: +6dB/-10dB@1KHz
  • Treble: +/-14dB @ 7KHz

Voicing Filters

  • +2dB@50Hz/-10dB@500Hz/
  •  +3dB @ 7 kHz

Amplifier Protection

  • Full short circuit, thermal, and RF protection.
  • Stable into reactive and mismatched loads.
  • Five-second muted warm-up.

Output Power

  • 200W at 4 Ohms

Manufacturer: Gallien-Krueger
Model: MB 115-II
SKU: I369934-2-WHXB

We are Chuck Levin's Washington Music Center

Maryland, Virginia, and Washington DC's legendary music shop. Family-owned and operated since 1958. Buy gear the way it was meant to be bought, from a store that's been there through it all and has the vibe to prove it. We're staffed with musicians and industry experts, people that live and breathe music gear. Our mission is to help you find the right gear for your project, that thing that will bring you the most joy out of what you do. We're an authorized dealer for almost every brand, we stock items the other stores don't, so you can try before you buy. Stop by our Wheaton, MD showroom and see for yourself.

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