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MG50FX / MG100FX
Rear panel shows MG50FX combo - MG100FX combo has the same features
MG100HFX head is identical except features two loudspeaker sockets
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21 22 23
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25 26
2 203 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
1. Input Jack Socket
Jack input for your guitar. Use a good quality guitar
cable (i.e. one that’s screened/shielded) to help prevent
noise, interference and unwanted feedback.
2. Gain Control
Controls the amount of signal entering the pre-amp and
the amount of distortion created in the selected channel.
3. Clean : Crunch Switch
Selects between Clean (green) and Crunch (red) channels.
4. Bass Control
Adds warmth and low-end depth to your sound.
5. OD Switch
Selects between OD1 (green) and OD2 (red) channels.
6. Middle Control
Varies the amount of body in your sound.
7. Treble Control
Increasing the Treble will make your sounds brighter
and more cutting, turning it down will decrease your
tone’s edge and make it sound softer as a result.
8. Rev Switch
Switches the reverb effect on and off.
9. Reverb Control
This control lets you add a lush reverb to the selected
channel, from a subtle hint to cavernous and all points
in-between.
10. Volume Control
Controls the volume of the selected channel.
11. FX Switch
Switches the FX section (Modulation and Delay) on and
off.
12. Mod Control
Selects and adjusts one of three modulation effects
Chorus, Phaser & Flanger.
13. Tap Switch
Matches the delay FX time to the time between two
pushes. The LED flashes at selected delay time.
14. Delay Control
Controls the amount of signal sent to the delay effect.
15. Ext FX Switch
Switches the external FX Loop on and off.
16. Master Control
Controls the master volume of the amplifier.
17. Damping (Manual) Switch
Switches the power amp damping between classic amp
feeling (LED off) and modern response (LED on).
Holding down the Damping switch for longer than 2
seconds switches the amp between manual and preset
mode (page 6).
When using the footcontroller, holding both the
Damping switch and the Store switch will activate the
tuner.
18. Headphones / Line Out Socket
3.5mm headphones / Line out.
19. Store Switch
Stores the current amp settings into the current channel
or into the footcontroller. When in manual mode the
Store button lights red.
20. Power Switch
The power switch turns your amplifier on and off. A
channel switch will light up when your amplifier is turned
on and none will be lit when the amplifier is switched off.
Please ensure the amplifier is switched off and unplugged
from the mains electricity supply before being moved.
21. Mains Input Connector
Your amp is provided with a detachable mains (power)
lead, which is connected here. The specific mains input
voltage rating that your amplifier has been built for is
indicated on the back panel. Before connecting for the
first time, please ensure that your amplifier is
compatible with your electricity supply. If you have any
doubt, please get advice from a qualified technician.
Your Marshall dealer will help you in this respect.
The correct value of mains fuse located in the small
drawer at the bottom of the mains socket is specified on
the rear panel of the amplifier. The drawer contains a
space for a spare fuse. NEVER attempt to bypass the
fuse or fit one of the incorrect value!
22. Footcontroller Socket
Jack socket for the connection of the footcontroller.
23. Loudspeaker Output(s) Socket
The MG50FX, MG100FX combos have 1 loudspeaker
output and the MG100HFX head has 2 loudspeaker
outputs.
Always use a non-screened Marshall approved speaker
lead when connecting an extension cabinet to these
amplifiers.
24. MP3 Line In Socket
Jam to your favourite MP3, CD or tape track by
connecting the line out or headphone output of your
player here. Adjust the volume of your player to match
that of your guitar and you’ve got the perfect ‘play-
along’ practice system.
25. Return Socket
Connect to the output of an external effects processor
or pedal here.
26. Send Socket
Connect to the input of an external effects processor or
pedal here.
Power (RMS) 50W
Channels 4
Speaker 1x12"
Weight (kg) 16.6kg
Size (mm) W, H, D 518 x494 x278
MG50FX Combo
Power (RMS) 100W
Channels 4
Speaker 1x12"
Weight (kg) 20kg
Size (mm) W, H, D 591 x528 x283
MG100FX 1X12" Combo (MG101FX)
Power (RMS) 100W
Channels 4
Speaker 2x12"
Weight (kg) 22.4kg
Size (mm) W, H, D 674 x494 x278
MG100FX 2x12" Combo (MG102FX)
Power (RMS) 100W
Channels 4
Speaker -
Weight (kg) 11.4kg
Size (mm) W, H, D 591 x249 x275
MG100HFX Head
Technical Specifications
ENGLISH