ENGLISH
5
1 Mains Input Connector
Your AVT20 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 shown on
the back panel. Before connecting for the first
time, please ensure that your electricity supply
is compatible with your amplifier. If you have
any doubt, please get advice from a qualified
person. Your Marshall dealer will help in this
respect.
AVT20 1x10" Combo Front Panel Features
B) The tone of your sound is also dependent
on the settings of the ‘tone’ controls, and
adjusting them to taste will further enhance the
sonic textures of your AVT20. The best way to
achieve your desired settings is to experiment.
6 Reverb Depth Control
Your AVT20 is fitted with an internal spring
Reverb unit. This control affects the mix of the
direct (dry) and Reverb signals - the higher this
control is set, the greater the Reverb depth.
7 CD Input Jack Socket
The CD input will take a stereo signal from
an external source, such as a CD or tape
player, and mix it into a mono format. This will
allow you to play along with a pre-recorded
signal. Because this input is after the preamp
stage, its volume has to be controlled from your
CD or tape player.
8 Emulated DI Out Jack Socket
This jack socket carries a specially treated
output signal from your AVT20 which accurately
emulates the sonic signature of a guitar
loudspeaker. This output can be used in both
live performance and recording situations to
achieve authentic guitar amp tones without
having to use a microphone. Furthermore, if
you wish to mute the loudspeaker, for ‘silent’
recording, then merely insert an unused jack
plug (a short patch cable will do fine) or a set of
headphones into the Headphone socket.
9 Headphone Jack Socket
In addition to providing a specially filtered
output signal for a set of headphones, this jack
also disconnects the main loudspeaker,
enabling you to practice in ‘silence’.
10 External Speaker Jack Socket
This socket allows you to connect your
AVT20 into an external loudspeaker system,
provided it has an impedance of 8 or 16 ohms.
By using any one of our comprehensive range
of extension cabinets, you will be able to
unleash the massive amount of tonal options
that extra loudspeakers will provide.
AVT20 1x10" Combo Rear Panel Features
ENGLISH
4
1 Input Jack Socket
This is where you plug your guitar into the
amp. In case you are not aware, you must
always use a screened guitar cable, never use
an unscreened speaker lead. Also, for the best
performance this cable should be one of high
quality. If you are in any doubt regarding this,
your Marshall dealer will be more than happy to
help and advise you further.
2 Clean/Overdrive selection
switch
Your AVT20 has two selectable modes -
Clean and Overdrive. When the switch is ‘out’
Clean is selected, when it is pushed ‘in’
Overdrive mode is activated.
The Clean mode of the AVT20 has the
warm, responsive action normally associated
with a valve amp, rather than the relatively
sterile, one-dimensional sound that is typical of
many solid-state type guitar amps. At lower
Gain settings this mode remains very clean but
will evolve into a bluesy/rock type crunch at
higher Gain settings.
When Overdrive is selected it will take you
from mild crunch to aggressive ‘modern’
distortions and all-points in between. The
many sonic palettes available are dependent
on the exact settings of the front panel controls
for Gain, Volume, Treble, Middle and Bass.
3 Gain Control
This rotary control can best be described
as the sonic ‘brains’ of the amp. At lower
settings, with the Clean/Overdrive switch set to
Clean, the AVT20 will give you a wide range of
well-defined clean tones. At higher Gain
settings, the amp will start to ‘crunch up’ into
the aforementioned ‘blues/rock’ type sounds.
This ‘crunching up’ is often referred to as
‘break-up’. When Overdrive mode is selected
lower Gain settings will give you a vintage
sounding, valve distortion while higher settings
will produce more modern, high-gain tones.
4 Volume Control
As its name suggests, the Volume control
determines how loud your AVT20 will be by
controlling how much signal is transferred from
the preamp to the power amp. Due to the
remarkable realism of our Advanced Valvestate
Technology, once the Volume control is turned-
up past a certain point, the preamp will start to
push the power amp section into creating its
own, desirable distortion mode - just like an all-
valve Marshall amp. When this occurs, the
AVT20's power amp will start to add musical
harmonics, compression and ‘break-up’ into
your sound.
5 Tone Controls
The AVT20 is equipped with rotary Bass,
Middle, and Treble controls, all of which work
on both the Clean and Overdrive modes. These
three passive EQ controls are designed to
achieve maximum tonal variation from your
AVT20 and, just like our famous all-valve
amps, are highly inter-dependent on each
other. As a result, the way each one functions
depends on the exact position of the other two
controls. This is especially true of the Bass
and Treble controls in relation to the Middle
control. The lower the Middle control, the more
reaction can be obtained from the others. As
tone is very much down to personal taste,
experimentation and experience is probably the
best way of learning how these three controls
will affect your sound. Some suggested
settings are shown later.
Points to remember are:
A) The tone and output level coming out
of the guitar is as widely variable as there are
guitars themselves, all guitars are not designed
(nor intended) to be equal. Therefore, amp
settings will vary to suit your guitar and playing
style, and by necessity, are at your discretion.
Again, if in doubt, consult your Marshall dealer
for advice.
AVT20 1x10" Combo Front Panel Features
