This is the 10 pages manual for Adcom GFP 555 Owners Manual.
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Selector only determines what is heard through the speakers, it will not affect the signal chosen for
recording with the Recording Selector.
The Recording Selector also allows you to copy (dub) from one tape deck to another. To copy from
Tape 1 to Tape 2, select the Tape 1 setting on the Recording Selector. To copy from Tape 2 to Tape 1, select
the Tape 2 setting on the Recording Selector. Remember; the Recording Selector does not determine
what you hear through the speakers To listen to eitherTape 1 orTape 2 you must make the appropriate
selection using the Listening Selector. It should be noted that unlike conventional preamps, actual
signal switching is done on the circuit board near the rearpanel inputs.This arrangement will keep hum,
noise and distortion to a minimum by eliminating the wire necessary for front panel switches The
front panel selector is only making a mechanical change and has no wines going through the control.
VOLUME 9 .
This high quality control is used to raise and lower the loudness ot the music playing through the
speakers or headphones.
THE CARE AND FEEDING OF YOUR GFP-555
Great care has been taken by ADOOM to assure that your preamplifier is as flawless in appearance
as it is electronically. The front panel is heavy gauge, high-grade anodized aluminum, bead—blasted for
durability and beauty. It the front panel should become fingerprinted or smeared, it can be cleaned with
a damp, soft cloth.
The preamplifier is protected by a line fuse on the wpanel. if the power is switched ON and the
small red LED on the front panel does not illuminate aftera few seconds, shut off the preamplifier, unplug
the AC line cord from the power outlet. and check the AC line fuse. If the fuse has opened, replace it ONLY
with a fuse of equal value after carefully checking to determine the cause of the failure This product also
contains internal fuses which are designed to open under certain overload conditions. Should the pre-
amplifier cease to function and the external line fuse is OK, it is likely that an Internal fuse has opened.
You may have this checked by your authorized ADOOM dealer, and thereby avoid the inconvenience or
unnecessary return to the factory.
REPLACEMENT WITH AN INCORRECT FUSE OR ONE OF A HIGHER RATING WILL NOT PROTECT
THE PREAMPLIFIER AND WILL VOID THE WARRANTY.
IF YOU HAVE A PROBLBA OR QUESTION
ADOOM has a technical service department to answer all questions pertinent to the installation
and operation of your unit. Please feel free to write or call us In the event of difficulty, and we shall
endeavor to-offer prompt advice. If your problem can not be resolved through our combined efforts, we
may wish to referyou to an authorized repairagency, orwe may prefer to authorize return of the unit to the
tactory. To aid us In directing you to acomenient senrice station, it would be helpful if you indicate which
major city is accessible to your home. mace address inquiries to:
ADCOM TECHNICAL SERVICE DEPT.
11 ELKINS ROAD '
EAST BRUNSWICK, NJ 08816
(201) 390-1 130
When calling or writing about your preamplifier; be sure to include the model and serial number of
your unit, as well as'the date of purchase and the dealerfrom whom the unit was purchased. in the event
that the unit must be returned to us for service. you will be instructed as to the proper procedure when
you call or write for return authorization.
UNDER NO CIRCUMSTANCES SHOULD YOUR UNIT BE SHIPPED TO THE FACTORY WITHOUT PRIOR
AUTHORIZATION, 0R WITHOUT THE ORIGINAL CARTON AND FILLERS.
If the original shipping carton has been lost or discarded, or if the carton is not in good condition,
a duplicate carton may be obtained from our service department for a nominal charge.