CAUTION!
Never place drinks on top of the amplifier for obvious reasons. Liquids can cause the
glass envelopes of the hot vacuum tubes to crack possibly shorting out the amplifier. Liquids
can also cause damage to switches and potentiometers and generally reduce the reliability of
your amplifier as well as require an expensive repair. If an accidental spill does occur,
remove the amplifier from the cabinet, remove the tubes, and thoroughly clean and dry the
chassis before attempting to use the amplifier.
Be mindful not to restrict airflow to the back of the amplifier.
Never replace the protective fuse with one of a higher amperage rating. If an
amplifier starts blowing fuses, it may be warning of an impending problem with the
amp and should be looked over by a professional.
USE IN OTHER COUNTRIES
Your MATCHLESS amplifier is equipped with a multiple primary winding enabling
the user to set the amplifier for various voltages and line frequencies available in foreign
countries. This is an internal connection change and should be done by a qualified
technician. MATCHLESS amplifiers can operate on voltages ranging from 110-120 volts
A.C. at 60 Hertz and 220-224 volts A.C. at 50 Hertz. It also can be switched to 100 volts A.C.
at 50 Hertz. As well as 220-240 volts A.C. at 50 Hertz. If you have any questions about this
conversion, please contact the factory.
OPTIONS:
MATCHLESS offers an effects loop option for most amplifier models. An effects
loop enables the user to insert any desired effects device between the channel preamplifier
and the power amplifier. MATCHLESS amplifiers provide two independent loops, one for
channel one and one for channel two. The effects loop jacks are located on the rear panel of
the amplifier. The upper jack is for the “Tone-Boost” channel, while the lower jack is for
the “Pentode” channel. Each jack is configured in a Ring, Tip, Sleeve manner similar to a
recording studio console insert point. Each jack is of the normalizing type and contains the
send and return information on a single ¼“ stereo phone jack. The Tip is used for the send
signal and the Ring is used for the return signal. The Sleeve is ground. The SEND signal is
derived just after the channel volume control and the RETURN signal is inserted at the
phase inverter, just before the Master volume control.
A Stereo “Y-cord” is required for loop operation. When the loop is not being used, the signal
is “normalized” through the jack.
The effects loop option is intended for use with guitar type foot pedals and semi-pro
level rack type effects. It is not designed to drive effects units requiring high level signals
(+4), as encountered in a professional recording studio.
ACCESSORIES AND OPTIONS
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