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1. INPUT jack
Use a good quality guitar cable (i.e. one that’s
screened/shielded) to plug your guitar in here.
2. Clean Channel GAIN control
When the Clean Channel is selected, this control
adjusts its volume. At low settings the sound will be
very clean with a pleasing, bell-like ring. Turning
this control above half way will introduce a
desirable, bluesy distortion as the power amplifier
stage is driven into ‘crunch mode’.
3. Clean Channel BASS control
Turning up the Bass control will add warmth and
low-end depth to your clean sound. The Bass control
can be used in conjunction with the FDD switch (17)
to produce deep sounding, valve-like clean tones that
are well defined yet still full and round.
4. Clean Channel MIDDLE control
Adjusting the middle frequencies in your clean
channel will vary the amount of body to your sound.
Attenuating (decreasing) the middle by turning this
control anticlockwise will yield a more hollow sound
with the bass and treble frequencies appearing to
be more accentuated. Conversely, increasing the
middle will add body to the Clean Channel’s sound.
5. Clean Channel TREBLE control
Increasing the Treble will make your clean sounds
brighter and more cutting, turning it down will
decrease your tones edge and make it sound softer
as a result.
6. CHANNEL SELECT switch
This push switch allows you to change between
the amp’s two channels, Clean and Overdrive, via
the front panel. When this switch is ‘out’ the Clean
channel is engaged, pushing it ‘in’ switches to the
Overdrive Channel. Channel switching can also be
done via the included two-way footswitch (when the
footswitch is connected the CHANNEL SELECT
switch is not functional).
Note: When the Overdrive Channel is selected,
the OD LED (7) will light up red.
7. OD LED
When illuminated, this LED indicates that the
Overdrive Channel has been selected by either the
Channel Select switch (6) or the supplied two-way
footswitch.
8. Overdrive Channel GAIN control
Turning up the Gain control will increase the
amount of preamp distortion generated in the
Overdrive Channel. Low Gain control settings will
produce classic rock and blues tones. Crank this
control for fat and aggressive sounds that are
perfect for soloing or hard rock and nu-metal riffing.
9. Overdrive Channel BASS control
Turning up this control will add extra low-end
‘thump’ to high gain riffs and a warm, natural
sounding depth to lower gain crunch tones. Using
the Bass control in conjunction with the FDD switch
(17) will allow you to dial in the exact amount of
low-end ‘thump’ and tightness you are looking for.
10. Overdrive Channel CONTOUR control
This highly effective tone control works by
radically modifying the mid-range (body) of your
sound. The tone can vary from traditional and
woody sounding (control set at 0), to balls-to-the-
wall (control set midway), to aggressive, ‘scooped’
and modern (turned up to 10) and all points in-
between.
11. Overdrive Channel TREBLE control
This important knob controls the aggressive top-
end ‘sizzle’ you have on high gain sounds and the
‘cut’ and definition of lower gain crunch tones.
Experimenting with this control will help you to dial
in your own signature tones on your amp.
MG50DFX & MG250DFX Front Panel Features
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12. Overdrive Channel VOLUME control
This control adjusts the volume of the Overdrive Channel. The louder you turn-up this channel, the
‘looser’ your amp will sound and feel – especially with the FDD switch (17) engaged. This behaviour
is exactly what a good all-valve amplifier does and is a result of our proprietary FDD circuitry.
13. Digital FX PRESET / ADJUST control
This control serves a dual purpose. Not only does it allow you to select one of the four types of
effects on offer (Chorus / Delay (CHR/DLY), Delay (DLY), Chorus (CHR) or Flange (FLG)), it also
allows you to adjust a parameter as you sweep it through each of the four effect segments. The
parameter you can adjust for each of the four effect segments is shown below:
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Chorus and
Delay
(CHR/DLY)
Effect Description
Adjustable
Parameter
Delay Time
(from short to long as you
turn the Preset/Adjust
control clockwise through
the CHR/DLY segment)
This multi-effect combines a lush, fixed speed
Chorus with a variable time Delay.
Delay (DLY)
Delay Time
(from short to long as you
turn the Preset/Adjust
control clockwise through
the DLY segment)
Short Delay Times will have less repeats for
‘groovy’ surf and rockabilly tones. Increasing the
Delay Time increases the number of repeats for a
much more atmospheric, ‘stadium’ effect.
Chorus (CHR)
Speed
(from slow to fast as you
turn the Preset/Adjust
control clockwise through
the CHR segment)
At slow Speeds a mellow, Phase-like sweep
occurs. As the Speed is increased a more
traditional chorus effect is heard. At maximum
Speed, a psychedelic vibrato results.
Flange (FLG)
Speed
(from slow to fast as you
turn the Preset/Adjust
control clockwise through
the FLG segment)
At slow Speed settings the amount of
regeneration is increased for huge ‘jet engine-
like’ sweeps. As the speed is increased the
regeneration decreases to produce a lush,
natural sounding Flange effect. When the Speed
is maxed out, a fast vibrato results.