Control Elements; Front Panel - Bugera 333 User Manual

Control elements

Front panel

1 The POWER switch is used to turn the power of the
BUGERA amplifier on and off.
2 The STANDBY switch allows you to place the amp
in STANDBY mode. This way the amp is idle, but
the operational temperature of the valves is main-
tained (POWER switch turned on). Flick the STAND-
BY switch to change to the active mode (the above
status light illuminates).
ATTENTION! TO AVOID DAMAGE TO YOUR
!
AMP, NEVER USE THE BUGERA VALVE AM-
PLIFIER WITHOUT A LOUDSPEAKER CON-
NECTED!
3 The MASTER control adjusts the volume level of
the BUGERA. First, bring the levels of the ampli-
fier's three channels into line and only then specify
the overall level with the MASTER control. Turn the
control to the right to increase the volume; turn it
to the left to reduce the volume.
4 The PRESENCE control modifies the amp's damping
factor at high frequencies (only 333XL and 333XL-
212). This is used to fine-tune the high-frequency
range of the speaker cabinet.
5 The REVERB control determines the amount of the
built-in reverb effect.
6 The REVERB switch activates the REVERB effect
(switch glows yellow).
7 The FX LOOP/BOOST switch activates the FX LOOP
and the BOOST function (switch glows green).
$
You can also activate the FX LOOP with the
supplied footswitch. Refer to „Footswitch" for
details.
8 The NOISE GATE control determines the effect the
NOISE GATE filter has on the LEAD and CRUNCH
channels (only 333XL and 333XL-212). The further
you turn the control to the right, the more noise
is reduced. At low GAIN settings, the NOISE GATE
shouldn't be set too high or else the tones' sustain
is affected.
9 The VOLUME controls adjust the volume levels of
all three amplifier channels.
10 The TREBLE controls of the LEAD and CRUNCH
channels adjust the upper frequency range (active
shelving control for up to 15 dB boost/cut).
11 The MID controls of the LEAD and CRUNCH chan-
nels adjust the mid-frequency range (active peak/
notch control for up to 15 dB boost/cut).
Front panel of the BUGERA 333XL
12 The
nels adjust the lower frequency range (active shelv-
ing control for up to 15 dB boost/cut).
13 The
el of the LEAD and CRUNCH channels (the CLEAN
channel doesn't feature a GAIN control). Turn the
control to the right to increase the preamplifier's
distortion and sustain.
$
Please note that extremely high GAIN and
VOLUME settings in conjunction with high
MASTER settings can make the combo mod-
els vibrate mechanically. This may occur when
played at extremely high volume levels, which
is seldom done. Should this be the case, ad-
just the GAIN and VOLUME settings so that the
problem does not recur.
14 The
change the amplifier's response at low frequencies
(only 333XL and 333XL-212). It fattens up the tone
by providing more low-end.
15 The
glows red).
16 The
(switch glows yellow).
17 The passive
quency range of the CLEAN channel.
18 The passive
range of the CLEAN channel.
19 The passive
quency range of the CLEAN channel.
20 The
(switch glows red).
$
You can activate the three channels with the
supplied footswitch. Refer to „Footswitch" for
details.
21 The
is 6 dB louder than the LOW GAIN input and is used
for most electric guitars.
22 The
an extremely high output level which could distort
the HIGH GAIN input (only 333XL and 333XL-212).
$
The HIGH GAIN and LOW GAIN connectors
have identical sensitivity when used at the
same time (both with LOW GAIN sensitivity).
Control elements
BASS controls of the LEAD and CRUNCH chan-
GAIN control lets you determine the input lev-
XL switches of the LEAD and CRUNCH channels
LEAD switch activates the LEAD channel (switch
CRUNCH switch activates the CRUNCH channel
TREBLE control adjusts the upper fre-
MID control adjusts the mid frequency
BASS control adjusts the lower fre-
CLEAN switch activates the CLEAN channel
HIGH GAIN input (333 and 333-212: INPUT)
LOW GAIN input is used for instruments with
en
5