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

The Gallien-Krueger MB 115-II packs 200W into an ultra-light 38lb package.  Sound comes from a GK built single 15--" driver to give you great bass tone but in a combo amp that can go anywhere.

TONE SHAPING

Four band active EQ and contour based on the legendary 800RB provide extensive tone shaping capability.

ULTRA PORTABLE PERFORMANCE

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 provide lasting protection.

CONNECTIVITY

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 light weight switch mode power supply and power amp deliver 200W into the speaker with very little wasted heat dissipation.

PROTECTION

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 LIGHT WEIGHT

Internal bracing to insure 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 cabinets specific designed speaker.  The ports coupled with a specific jute blend of damping material provides the right amount of damping at the right frequencies, for optimum response.



  • 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


OUTPUT POWER

  • 200W@4 Ohms

INPUT SECTION

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

EQUALIZER

  • 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

NOISE

  • -90 dB reference to 200W, ‘A’ weighted

AMPLIFIER PROTECTION

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

Manufacturer: Gallien-Krueger
Model: MB 115-II
SKU: I369934-N-1-WHXA
UPC: 836989002861

We are Chuck Levin's Washington Music Center

Since 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.

Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.


ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more
Brand
Model
  • MB115-II Ultra Light 200W 1x15" Bass Combo
Categories
Number of Inputs
  • 1 Input
Power Tube Type
  • None
Speaker Configuration
  • 1x15"
Electronics
  • Solid State
Reverb
  • None
Color Family
  • Black
Number of Channels
  • 1 Channel
Output Power (Watts)
  • 200

Product safety information may be available here.

Chuck Levin's Washington Music Center

Wheaton, MD, United States
Joined Reverb:2014

Reverb Protection

Simple Returns, Secure Transactions, Human Support

Learn more

Secure Checkout

Promoted similar listings













Product reviews

Reverb Gives

Your purchases help youth music programs get the gear they need to make music.

Oops, looks like you forgot something. Please check the fields highlighted in red.