− 3 −
The BOOST MODE allows for instant increase of volume level during a performance.
The potentiometer [15] and a foot−switch [27] are designed to control the BOOST
MODE. Upon turning ON and pressing the foot−switch, the LED [16] indicates that the
BOOST mode is activated. Thereafter, the desired volume level may be adjusted by
tweaking the potentiometer. By then pressing the BOOST switch located on the top of
the amp, two different volume levels previously set will be obtained. The BOOST MODE is
BOOST MODE
TUBES
Optimal operating parameters of tubes 12AX7 were set by manufacturer. It is not
recommended to replace operational tubes. Only broken tubes should be replaced with
new ones.
NOISE GATE
TONE CONTROLS
MUTE
NORMAL / MIX-MODE
The NOISE GATE is designed to eliminate noise and interference superimposed on the
signal from the instrument. The signal is cut off at the moments when breaks in playing
are occurring. The NOISE GATE can be turned ON or OFF by the switch"14" and the level
of threshold is adjustable by the potentiometer "12". The Noise Gate's threshold is
indicated by the LED "13"
Each channel is equipped with a regular three point EQ (BASS, MIDDLE, TREBLE) and
switches which change the character of the sound.
The MID−RANGE switch changes the range of frequency of the MIDDLE potentiometer.
This option is very useful in the proper setting of the guitar’s sound in an overall band mix
depending on the style of music played and type of guitar used. Additionally, the highest
frequency range of the guitar can be altered by the BRIGHT/DARK switch.
The MUTE function allows quick muting of the instrument using a footswitch. After
pressing the switch all LED’s assigned to the choosen channel are turn OFF. The signal
from the guitar is MUTED at the speaker out and at all preamp outputs.
Reactivating the amplifier is done by pressing any footswitch channel selector.
The amplifier is designed to operate in two modes:
L where only one of the three channels is used and
in the
where all three channels are mixed and used simultaneously.
Note: In the MIX−MODE all channel's selecting foot switches are disabled.
The MIX−MODE option has been designed for musicians who love to experiment with
sound which is the result of blending several channels simultaneously. In this mode, all
controllers in every channel are operational and allow the player to freely mix signals
from all channels simultaneously to obtain a desired texture of sound.
NORMA
MIX−MODE
