PRECAUTION! Cathode biased class A amplifiers do not like to “idle” for prolonged periods. These
amplifiers draw more current idling than they do while being played. Use the stand-by mode or turn the
amplifier off if you are not going to play for a while. Save your tubes!
SPEAKER PHASE SWITCH
All Amplifiers manufactured after November 1993 incorporate a “Speaker Phase” reversal
switch at the rear of the speaker system. Reversing the motion of the speakers can influence
clean and distorted sound, especially if a direct signal is taken from the guitar and “mixed”
with a miced amp. If two amplifiers are used in stereo, reversing the speaker polarity of one
amplifier creates a whole new tone dimension.
ABOUT THE FUSE!
Your MATCHLESS amplifier employs a line safety fuse for protection against
damage. The line fuse offers protection against irregularities in an A.C. source, tube failure,
component failure, severe overload to the output amplifier, and other conditions that prove
unsafe or damaging to the amplifier. If an amplifier blows a line fuse, an investigation into its
cause is required. Correct any problems that may be found before putting the amplifier back
in service.
Never replace a line fuse with one of a higher amperage rating! Not only is it unsafe, but it
leaves your amplifier unprotected in the event of a tube or component failure and voids your warranty.
Use this chart to determine the correct fuse type for your amplifier:
C-30 Chassis (USA) 3AG size 3 Amp rating
C-30 Chassis (Japan) 3AG size 3 Amp rating (Slo-Blo)
C-30 Chassis (Europe) 3AG size 2 Amp rating
For amplifiers designed to operate at non-standard voltages, the required fuse size and rating
will appear on the manufacturer’s tag affixed to the inside of the amplifier cabinet, or at the
fuse holder on the chassis. When in doubt, consult your dealer or contact the factory.
If you are traveling with your amplifier, and are uncertain about the voltage requirements
and fuse type, please contact the factory. In some countries the line voltage may vary slightly
from the voltage at which an amplifier may be set. This may require modification of the fuse
rating.
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