￿

AdditionofaservocircuitminimizesDCoffsetvo

ltageattheloudspeakeroutputs;this

 

insuresthatthereisnowoofer"biasing"withatte

ndantlowfrequencydistortion.

￿

Largerheatsinksforeachchannelforgreaterheat

dissipationandbettertemperature

 

anddynamicbiastracking.Greaterthermalstabilit

yistherebyinsured.

￿

Morecoolingventsontopcoverandchassisforgr

eatercoolingefficiencyandcooler

 

operationintolowerimpedances.

 

￿

Highquality,goldplatedbrassRCAinputjackswi

thTefloninsulators.

￿ThermaloverloadindicatorLEDonfrontpanel.

IMPORTANT NOTICE

ADCOMPROTECTIONPLAN (U.S.AONLY)

ADCOMoffers theenclosedvaluableLimitedWarranty . Pleaseread the details on the

Warrantycardcarefullytounderstandtheextentof

theprotectionofferedbytheWarranty,

itsreasonablelimitations,andwhatyoushoulddo

inordertoobtainitsbenefits.Please

registeryourwarrantyonlineat www.ADCOM.comorwww.ADCOMUSA.com

Besuretoverifythattheserialnumberprintedon therearpanelmatchestheserialnumber

ontheoutercarton.Ifanynumberisalteredormi ssing,youshouldnotifyusimmediatelyin order toinsurethatyouhavereceivedagenuineAD COMproductwhichhas notbeen opened,mishandledortamperedwithinanyway.

UNPACKING

 

 

 

BeforeyourGFA555msleftourplant,itwascarefu

 

llyinspectedforphysicalimperfections

and tested for all electrical performance parameter

 

s as a routine part of ADCOM's

systematicQualityControl.This,alongwithfullo

perationalandmechanicaltesting,should

insureaproductflawlessinbothappearanceandpe

 

rformance.Afteryouhaveunpacked

theGFA555ms,inspectitforphysicaldamage.Save

 

theshippingcartonandallinternal

packing materials, as they are intended to reduce t

o a minimum the possibility of

transportationdamage,shouldtheamplifiereverne

edtobeshippedagain.Intheunlikely

eventdamagehasoccurred,notifyyourdealerimmed

 

iatelyandrequestthenameofthe

carriersothatawrittenclaimtocovershippingd

amagescanbeinitiated.

THERIGHTTOACLAIMAGAINSTAPUBLICCARRIERCANB EFORFEITEDIFTHE CARRIERISNOTNOTIFIEDPROMPTLYINWRITINGANDIF THESHIPPINGCARTON ANDPACKINGMATERIALSARENOTAVAILABLEFORINSPECT IONBYTHECARRIER. SAVEALLPACKINGMATERIALSUNTILTHECLAIMHASBEEN SETTLED.

Page 4
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Adcom GFA-555MS manual Important Notice Adcomprotectionplan U.S.AONLY, Unpacking

GFA-555MS specifications

The Adcom GFA-555MS is a high-performance power amplifier that has established a reputation for its reliability and excellent sound quality. This amplifier, developed by Adcom, an American audio company known for producing high-quality audio components, is often sought after by audiophiles and professionals alike for its unique features and robust build.

One of the standout characteristics of the GFA-555MS is its impressive power output. With a continuous power rating of 200 watts per channel into 8 ohms, and even more when driving lower impedances, it provides ample power to drive a wide variety of speakers. This ensures that users can enjoy dynamic sound reproduction, whether they are listening to music at moderate volumes or cranking it up for a party.

The GFA-555MS is designed using a high-current, Class AB topology, which strikes a balance between efficiency and sound fidelity. This design allows for clean, detailed audio reproduction while minimizing distortion. The amplifier is renowned for its ability to handle complex musical passages and reproduce them faithfully, making it a favorite among music lovers who appreciate the nuances of their favorite recordings.

Another notable feature is its advanced thermal management system. The GFA-555MS is equipped with substantial heat sinks and a robust power supply that allows it to operate efficiently without overheating. This is particularly beneficial for sustained listening sessions or when driving demanding speaker loads.

In terms of connectivity, the GFA-555MS offers various input options, including RCA and XLR connections, making it versatile enough to integrate into a range of audio systems. This flexibility is complemented by its exceptional build quality, with a solid chassis that not only enhances durability but also minimizes vibrations that could interfere with sound quality.

The amplifier also includes additional features such as DC protection circuitry and a comprehensive output stage protection system. These safeguards help protect both the amplifier and the connected speakers from potential damage due to short circuits or overheating.

Overall, the Adcom GFA-555MS stands out in the realm of audio amplifiers. Its combination of power, sound quality, and advanced technologies make it a preferred choice for both casual listeners and serious audiophiles. Whether for home theater setups or music playback, the GFA-555MS delivers performance that is hard to match, making it a true classic in the audio world.