User's Manual

From left to right:
MG250DFX Combo
MG50DFX Combo
MG100HDFX Head
MG412A Cab
MG100DFX Combo
Marshall Amplification Product Catalogue 45
MG Series Amplifiers
MG50DFX Combo • MG100DFX Combo • MG100HDFX Head • MG250DFX Combo • MG412A/B Cabs
44 Marshall Amplification Product Catalogue
Packed with tone and loaded with features, each and
every one of the solid-state MG Series amplifiers gives you
the unmistakable sound quality, dynamic feel and high
performance that has made Marshall the number one
choice for guitarists all over the globe for the past four
decades.
MG50DFX Combo
Delivering 50 Watt RMS of Marshall power through its custom-designed
12" speaker, the twin channel MG50DFX delivers the goods both at
home and on stage. Each footswitchable channel has its own set of tone
controls for maximum flexibility. In addition to producing great clean
sounds, when you crank up the Clean channel’s Gain control you get a
raunchy, blues-tinged crunch. As you’d expect from a Marshall, the
Overdrive channel has gain to spare and also boasts the now legendary
Valvestate-style Contour control which allows you to ‘scoop out’ or ‘fill in’
the all-important mids.
The specially-voiced DFX section offers Chorus/Delay, Delay, Chorus and
Flange effects, plus a natural sounding digital Reverb with its own
individual Level control. Add to this our revolutionary FDD, footswitchable
channels, a Series Effects Loop and Speaker Emulated Headphones
and Line Out plus a CD input, which allows you to plug in a CD or
cassette player and jam along with your favourite artist or band and you
have an unbeatable package for the price.
MG250DFX Combo
Double the power of the feature-loaded, versatile MG50DFX and you get
the MG250DFX with its stereo, 50 Watt + 50 Watt power amp driving
2x12" custom speakers – awesome!
MG100DFX Combo
This compact, gig-ready, 100 Watt, 1x12" combo is a powerhouse of
killer tone. Its two footswitchable channels offer a pair of selectable
modes – Clean/Crunch on the Clean Channel and OD1/OD2 on the
Overdrive Channel. Each channel has independent tone controls for
Bass, Middle and Treble, and the Overdrive Channel also features
our critically-acclaimed Contour control to ensure that all-important
tonal versatility.
Higher Gain settings on the Clean Channel will yield a healthy, bluesy
overdrive, especially when the ‘Crunch’ mode is selected. This said,
when in Clean mode, this channel has bags of headroom which makes
high levels of clean performance easily attainable. The Overdrive
Channel’s OD1 mode is reminiscent of the throaty drive that has made
our vintage amps famous, while OD2 is brimming with modern, high
gain aggression.
The MG100DFX’s specially-voiced footswitchable DFX section offers
Chorus/Delay, Delay, Chorus or Flange effects plus a natural sounding
digital Reverb with its own individual level control.
Add in our revolutionary FDD technology, a Parallel Effects Loop (with
switchable level and Effects Mix control), custom 12" speaker, CD input,
Speaker Emulated Headphones and Line Out plus a Master Volume
control and you have a world-beating combo.
MG100HDFX Head
Boasting the same impressive features and staggering versatility of the
MG100DFX combo, this awesome, 100 Watt head will drive any cabinet
from the Marshall range, but is best suited to the Celestion-loaded
MG412A (angled) and MG412B (straight) 120 Watt 4x12" cabinets.
Unbelievable tone, feel and projection come as standard.
FEATURES MG50DFX MG250DFX MG100DFX MG100HDFX
Output (RMS) 50 Watt 100 Watt (2 x 50 Watt) 100 Watt 100 Watt
Channels 2222
Separate EQ per Channel 
Clean/Crunch Switch (Ch 1) No No 
OD1/OD2 Switch (Ch 2) No No 
Contour Control (Ch 2) 
Footswitchable Channels 
CD Input 
Emulated Line Out 
Emulated Headphone Jack 
Digital FX (footswitchable) 
Digital Reverb 
FX Loop 
FX Loop Level & Mix Control No No 
FDD Switch 
Speaker 1 x 12
" 2 x 12 " 1 x 12 " No
Footswitch (supplied) PEDL-90004 PEDL-90004 PEDL-90004 PEDL-90004
Dimensions (mm) 520 x 500 x 285 675 x 500 x 285 595 x 540 x 270 595 x 250 x 270
Weight (kg) 16 22 22.4 12.8
AMPLIFIER SPECIFICATION
FEATURES MG412A MG412B
Speaker Configuration 4 x 12” 4 x 12”
Power (RMS) 120 Watt 120 Watt
Impedance 8 Ohm 8 Ohm
Dimensions (mm) 695 x 675 x 360 695 x 675 x 360
Weight (kg) 24 24
“I love the old MG100RCD head but the new MG100HDFX is
even better – it has a bigger, tighter low-end and even more
gain, making it perfect for the crunchy, detuned rhythms I do.
The ‘magic button’(the FDD switch), is a big selling point as
well – it allows the HDFX to sound great at any volume
because it maintains tightness and bite.The built-in effects are
nice too, they sound great and it’s really easy to dial them in.”
Wayne Static
(Static-X)
CABINET SPECIFICATION