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Gallien-Krueger MB500 bass guitar amplifier head

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Gallien-Krueger MB500 bass guitar amplifier head
Product no: 9000-0009-9298 Bax Music Warranty: This product comes with a 3-year warranty.

General

The Gallien-Krueger MB500 is the heavier, more elaborate brother of the MB200. Not only does it have more power (500 watts), it also boasts several other practical extras. For instance, this mini bass amplifier head features an additional boost channel with separate volume control that you can activate with the included foot switch. On the back, there's an extra FX loop as well as a second speaker output. Despite its amplifying prowess, the MB500 is ultra compact and weighs just 3.7 pounds.

Many faces of the Gallien-Krueger MB500

Despite its modest size, the MB500 offers a lot of options with which to conjure up a plethora of bass sounds. First and foremost, there's Gallien-Krueger's famous active 4-band EQ, plus an adjustable contour to scoop the mids while boosting the bass and treble. The boost channel is driven by GK's G.I.V.E. technology, for a delightful grunt, and it has its own volume control (Master-B) so that you can optimally adjust the levels of both channels. Additionally, there's a selectable limiter for when you really want to move all the air in the room.

DI output, FX loop and more

On the back of the amp is Gallien-Krueger's high-end DI output with ground lift and pre/post switch. Next to the foot switch input is the tuner out and the FX loop that allows you to add your favourite external effects to the signal. What's more, the MB500 is equipped with a headphone output that you can also use as a line-out or chain-out to connect it to an MB-powered speaker cabinet or heavier power amp. Lastly, there are two speaker outputs (1x 4 ohms or 2x 8 ohms) that can be used for both jack and SpeakOn connectors.

Specifications

Product features

Connectors External speaker(s), Footswitch, Line-out
Number of channels 1
Number of speaker outputs 2
Amp modelling no
Effects loop yes
Weight 0 - 4.9 kg
Speaker output impedance 8 Ohms, 4 Ohms
Built-in tuner no
Built-in compressor no
Built-in effects none
Colour grey
Power attenuator no
Amplifier type transistor
Amplifier valve not applicable
Power in Watts 401 - 500 Watts

Weight and dimensions including packaging

Weight (incl. packaging) 2,0 kg
Dimensions (incl. packaging) 56,0 x 31,0 x 12,0 cm

Product specifications

  • bass guitar amplifier head
  • designed and made in the US
  • very compact and lightweight
  • preamplifier type: solid state
  • energy-efficient class-D power and digital main amp
  • number of channels: 2 (normal and drive)
  • 500 W at 4 ohms, 350 W at 8 ohms
  • active 4-band EQ with four specific bass frequencies
  • contour control to gradually scoop the mids and boost the bass and treble
  • boost function (Gate Induced Valve Effect) + separate volume control (Master B)
  • boost can be selected via the included foot switch
  • input gain control with -10dB pad, master volume
  • selectable limiter on the top
  • on/off switch with Power/Protect LED ring
  • chain output to connect GK MB-powered speaker cabinets
  • cooling: variable fan
  • dimensions (WxDxH): 11 x 9 x 1.75 inches (279 x 229 x 44.5 mm)
  • height including rubber feet: 2.5 inches (63.5 mm)
  • weight: 3 lbs 12 oz (1.7 kg)

Connectors:

  • ¼” instrument input with -10dB pad switch
  • DI output: XLR with ground lift and pre/post switch
  • footswitch input: 1/4" TS jack
  • tuner output with mute function (on the front): 1x 1/4" jack
  • FX send/return: 2x 1/4” jack
  • headphone/line/chain output (selectable): 1/4" TRS jack
  • 2x combo Neutrik SpeakOn/jack (1x 4 ohms or 2x 8 ohms recommended)

Equalizer:

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

Voicing filters:

  • Contour: +2 dB at 50 Hz /-10 dB at 500 Hz /+3 dB at 7 kHz

Safety:

  • full short-circuit, thermal and RF protection
  • stable to reactive and mismatched loads
  • 5-second muted warm-up time
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