Perreaux 255i Integrated Amplifier User manual

Brand: Perreaux

Model: 255i Integrated Amplifier

Category: Headphone amplifiers

Type: User manual

PERREAUX

255i

The Perreaux 255i

Integrated Amplier

Designed and Manufactured in Dunedin, New Zealand

Explanation of symbols used in this manual or on the rear of the device:

Caution

• Toreducetheriskofelectricshock,donotremovethecover.

• Nouserserviceablepartsinside.

• Referservicingtoqualiedservicepersonnel.

• Replacethemainsfuseintheplugwithoneofthesametypeandrating.

• Disconnectsupplycordbeforechangingfuse.

Warning

Toreducetheriskofreorelectricshock,donotexposethisdevicetorainormoisture.Shockhazard-donot

open.

Mains Plugs

• Thisdeviceissuppliedwithanon-rewireablemainsplugfortheintendedcountry.

• ReplacementmainsleadscanbeobtainedfromyourPerreauxdealer.Shouldyouneedtochangethe

plugpleasedisposeofitcarefully.Aplugwithbaredconductorsisdangerousifengagedinalivesocket.

• TheBrownwiremustbeconnectedtotheLive(Line)supplypin.

• TheBluewiremustbeconnectedtotheNeutralsupplypin.

• TheGreen/YellowwiremustbeconnectedtotheEarth(Ground)supplypin.

• Pleasecontactyourdealeroracompetentelectricianifyouareinanydoubt.

• Refertotherearoftheproductforfuseandmainsvoltageinformation.

Important Safety Instructions

Thissymbolisintendedtoalerttheusertothepresenceofuninsulateddangerousvoltageswithin

theenclosureofsucientmagnitudetocauseelectricshock.

Thissymbolisintendedtoalerttheusertothepresenceofimportantoperation,maintenanceand

servicinginformationintheinstructionandservicemanuals.

ThisproductisdesignedtocomplywithinternationaldirectivesontheRestrictionofHazardous

Substances(RoHS)inelectronicequipment.Thewheeliebinlogoindicatescomplianceandthatthese

productsmustberecycledorprocessedasaccordingtothesedirectives.

Allsafetyandoperationinstructionsshouldbereadcarefullybeforethe255iisoperated.KeeptheOwnersManual

inasafeplaceforfuturereference.

• Readtheseinstructions.

• Keeptheseinstructions.

• Heedallwarnings.

• Followallinstructions.

• Donotusethedevicenearwater,forexamplenearabathtub,kitchensink,inawetbasement,neara

swimmingpool,etc.

• Cleanonlywithadrycloth.

• Mountingtoawallorceilingshouldbeviaaheavy-dutybracketorshelfdesignedforaudioequipmentuse.

• Thedeviceshouldbesituatedawayfromheatsourcessuchasradiators,stoves,orotherappliancesthat

produceexcessiveamountsofheat.

• DONOTplacethedevicedirectlyontocarpetedsurfaces.

• Avoidexposingthedevicetoextremelyhighorlowtemperatures.

• Thedeviceshouldbeconnectedtoamainspowersupplyonlyofthetypedescribedintheoperating

instructions,and/orasmarkedontherearoftheunit.

• DONOTdefeatthesafetyearthofthegroundingtypemainsplug,severeinjuryordeathmayresult.Ifthe

providedplugdoesnottintoyouroutlet,contactyourdealerorconsultanelectrician.

• Thepowercordshouldberoutedsothatitisnotlikelytobewalkedonorpinchedbyitemsplacedonor

againstit.

• Unplugthedeviceduringlightningstormsorwhenunusedforlongperiodsoftime.

• DONOTletobjectsorliquidsfallintothedevice,exposethedevicetodrippingorsplashingorplaceavessel

containingliquidontopofthedevice.

• Keepthisdeviceoutofreachofchildren.

• DONOToperatethedevicewiththecoverremoved.

• DONOTbypassanyfuse,replaceonlywiththevalueandtypespecied.

• DONOTattempttorepairthedevice.Intheeventofaproblem,pleasecontactyourPerreauxdealer.

• DONOToperatethisproductinanexplosiveatmosphere.

General Safety Instructions

INTRODUCTION........................................................................................................... 4

THE DECISION MAKING PROCESS........................................................................... 5

MINIMALIST DESIGN.................................................................................................. 6

FEATURES.................................................................................................................... 7

INSTALLATION............................................................................................................. 9

Unpacking..................................................................................................................... 9

Placement..................................................................................................................... 9

VentilationRequirements............................................................................................... 9

OtherDevices................................................................................................................ 9

QUICK START............................................................................................................ 10

CONNECTING............................................................................................................ 11

RearPanel................................................................................................................... 11

OPERATION................................................................................................................ 14

FrontPanel.................................................................................................................. 14

RemoteControl........................................................................................................... 16

THE MENU SYSTEM.................................................................................................. 17

HomeScreen............................................................................................................... 17

VolumeControl............................................................................................................ 17

InputSelection............................................................................................................ 17

Mute............................................................................................................................ 17

Entering and Navigating the Menus............................................................................ 17

Main Menu................................................................................................................... 18

Input Conﬁguration.................................................................................................... 18

Select.......................................................................................................................... 18

Labels.......................................................................................................................... 19

VolumeTrim................................................................................................................. 19

BalanceTrim................................................................................................................ 20

Enable.......................................................................................................................... 20

Status.......................................................................................................................... 20

Volume Conﬁguration................................................................................................. 21

InitialVolume............................................................................................................... 21

Maximum Volume........................................................................................................ 21

Balance........................................................................................................................ 21

Ramp........................................................................................................................... 21

MuteLevel................................................................................................................... 22

Bypass......................................................................................................................... 22

Headphone Conﬁguration.......................................................................................... 22

VolumeTrim................................................................................................................. 22

HeadphoneBalance.................................................................................................... 22

Clock........................................................................................................................... 23

Adjust.......................................................................................................................... 23

Format......................................................................................................................... 23

Location....................................................................................................................... 23

Options........................................................................................................................ 23

Display......................................................................................................................... 23

Timer........................................................................................................................... 24

Sleep........................................................................................................................... 24

Separate...................................................................................................................... 24

S-Keys......................................................................................................................... 25

System........................................................................................................................ 25

UnitInfo....................................................................................................................... 25

Preset.......................................................................................................................... 25

Defaults....................................................................................................................... 25

PROTECTION SYSTEM............................................................................................. 26

DCDetection............................................................................................................... 26

OverTemperatureDetection....................................................................................... 26

DCFuseFailDetection................................................................................................ 26

ACFailDetection......................................................................................................... 26

OverCurrentDetection............................................................................................... 26

TECHNICAL SPECIFICATIONS................................................................................. 27

TROUBLESHOOTING................................................................................................ 29

CARE AND MAINTENANCE...................................................................................... 29

INSTALLATION NOTES.............................................................................................. 30

PHYSICAL DIMENSIONS.......................................................................................... 31

PerreauxIndustriesLtd.,GladstoneRoad,

Mosgiel,Dunedin9024,NewZealand.

Allrightsreserved.Nopartofthispublication

may be reproduced, stored in a retrieval

system, or transmitted, in any form or by any

means, electronic, mechanical, photocopying,

recording, or otherwise, without the prior written

permissionofthepublisher.Thecontentofthis

manual is furnished for information use only, is

subjecttochangewithoutnotice,andshould

notbeconstruedasacommitmentbyPerreaux

IndustriesLtd.

PerreauxIndustriesLtd.assumesno

responsibility or liability for any errors or

inaccuraciesthatmayappearinthismanual.

Alltrademarksandregisteredtrademarksare

thepropertyoftheirrespectiveowners.Perreaux

andthePerreauxlogoaretrademarksofPerreaux

IndustriesLtd.Allrightsreserved.PrintedinNew

Zealand.

255i Manual Version 1.0

Acknowledgments

Table of Contents

Introduction

The 255i integrated amplier

Congratulationsonyour255iintegratedamplierpurchase.Torealisethefullpotentialofyourunityouneedto

appreciateallaspectsofitsoperation.

Beforeinstallingthe255iintoyoursystem,readtheentiremanualcarefully.Endeavourtounderstandevery

detailbyfamiliarisingyourselfwiththecontrolsandfeaturesasyouread.Youwillnditeasiertoinstallusingthe

relevantsectionsofthismanualasareference.

Wehaveattemptedtoexplaineveryfeatureandoperationfacetclearlyandconcisely.YourPerreauxdealerwill

behappytoassistifyouencounteranyunforeseenproblems.

Readthismanual,installyourunitcorrectlyandrealisethesonicsignicanceofyourinvestmentinPerreaux.

Perreauxproductsaredesignedtoprovidetheutmostinsonicrealismandelectronicreliability,withafunctional

yetelegantappearancethatreectsthecareandcraftsmanshipappliedduringallstagesofconstruction.

Features at a Glance

• Highlyrenedcircuitdesign

• Capacitor-freesignalpath

• Precisionvolumecontrol

• Non-invasivebalancecontrol

• MOSFETtechnology

• Balancedinput

• Intuitiveuserinterface

• Highlycustomisable

• Infraredremotecontrol

• Smarthomeintegration

• Protection

• Construction

• Optionalmodules

Wemaintainthehuman-linkthroughout;fromdesignandconstruction,throughtotheultimatetest–yourmusic,

yoursystem,yourears.

Becausewetoolistentoourproducts,weknowthatwithyouréloquenceintegratedamplieryouwilldiscover

manymoreofthemusicalsecretswestrivetoreveal.

FromallofusatPerreaux,thankyouforchoosingthe255iintegratedamplier.

Martin van Rooyen,

PerreauxManagingDirector

andthePerreauxdesignteam

The Decision Making Process

Inthissection,ourobjectiveistohelpyouextractthemostoutofyourinvestmentinyouraudiosystem.Maywe

takeamomentofyourtimewiththefollowingsuggestions.

Theaimofhighdelityaudioistoattempttorecreatetheoriginalperformanceinitsentiretyviatherecorded

medium.Tohelpyougettoknowwhatvariousinstrumentsreallydosoundlike,listentoliveconcertsofmusical

performancesthatyouprefer.Selectafewrecordingsofsimilarperformancesforcomparison.

YourPerreauxequipmentwill(andtherestofyoursystemshould)provideapreciseduplicationinyourlistening

areaofthetotalmusicalperformance,includingtheambienceofthevenueinwhichtherecordingwasmade.

Read magazines

Readhi-andaudiovisualmagazines,particularlytheequipmentreviewsandletterstotheeditorsections.Use

theseasageneralguideonly,andtrytoread“betweenthelines”.Remembernoonespecicallysetsoutto

downgradeaparticularpieceofequipment,sowhatisnotincludedinthereviewisoftenasimportantasthe

actualprintedcontent.

Choose your Hi-Fi dealer carefully

Chooseyourhi-dealercarefully;theyareyourprofessionalguide.Preferably,theyshouldbeknowledgeable

aboutmusicandrecordingtechniquesaswellastheequipmentitself.Theyshouldbeabletoprovideatotal

service,includinginstallation,system“tuning”advice,problemsolvingandaftersalesservice.

Frequentyourdealerandlistentoavarietyofequipmentusingrecordings,whicharefamiliartoyou.Ask

questionsandlistentoadvice,butremembertotrustyourownearstotellyouwhatsoundsrightforyou.If

possible,listentoyourequipmentchoiceinyourownlisteningareabeforeyounallymakeyourpurchase.

Whendecidingonyoursystemyouwillneedtodierentiatebetweensalesgimmicksandcosmeticwizardry,

asagainstpracticalfeaturesandfacilities.Recognisethe“ChristmasTreeSyndrome”-namely,themore

ashinglightsandswitchesthebetteritmustbe.Bearinmindthatyouarepayingforthese,andbecause

ofthenecessityofcarefulpricing,compromisesmayhavebeenmadeintheinternalcomponentqualityvital

foraccuratesoundreproduction.Eachcomponentthroughwhichtheaudiosignalmustpasswilladditsown

charactertothemusicyouhear,hencetheexpression,“colouration”.

Perreauxproductsarecarefullydesignedtominimisecomponentrywithintheaudiosignalpath.Allcomponentry

usedisofhighestqualityandonlyincludedwhenabsolutenecessityisestablished;nocomponentistherefora

freerideortocorrectfordeciencieselsewhereinthecircuitry.WithPerreaux,emphasisisplacedonmaximum

soundquality,componentandunitreliabilityandlonglife.

Minimalist Design

Minimalist design

LeadingBritisharchitect,JohnPawson,writes:

“TheMinimumcanbedenedastheperfectionthatanobjectachieveswhenitisnolongerpossibletoimprove

itbysubtraction.Thisisthequalitythatanobjecthaswheneverycomponent,everydetail,andeveryjunction

hasbeenreducedorcondensedtotheessentials.Itistheresultoftheomissionoftheinessentials”.

Perreauxhashistoricallyembracedtheminimalistethicfromanaudiodesignperspectiveonly.Theconceptof

“lessequatingtomore”hasbeenattheheartofallPerreauxaudiodesignsformorethan40years.

Minimalist electronics

Wewishtomaximisethequalityofyourlisteningpleasurebykeepingthecomponentryandsignalpathas

uncluttered,shortandcleanpossible.Allcomponentsinthesignalpath,eventhoseofthehighestqualityhave

aneectonthesignal,therebyalteringthequalityofthereproductioninsomeway.Ouraimistorecreateinits

entirety,theoriginalperformancebynotaddingorsubtractinganything,irrespectiveofthesource.

Minimalist user Interface

Wecarefullystudytheuserinterfaceandpardownthenumberofbuttonsandassociatedclutterleavingjustthe

essentialandnomore.Howtemptingithasbeenovertheyearstoloosesightofourcorevaluesastechnology

ortrendshavemadeitpossible.Thatisoneofthereasonswhyourolderproductsstillhavesuchahighresale

valuetoday.Theuserinterfacehasandalwayswillremainsimple,freefromadornments,cleananduncluttered.

Minimalist aesthetics

Ourproductsappealtothosewhoseektheultimateinaudioexclusivity,namelytheperfectblendof“formand

function”.

“Formandfunction”arebothtoughmasters.Thatiswhyouramplierheatsinksarenothidden,butinstead

featureprominentlyinallourdesigns.Wemakenoexcusesforproducingsomeofthemostdistinctivehigh-end

audioproductsontheplanet.Welet“formandfunction”blendtogetherinperfectharmony.Thissurelyisthe

essenceoftrueminimalistutilisation.

Minimalism in a wider context

JohnPawsonwrites:

“Clearlysimplicityhasdimensionstoitthatgobeyondthepurelyaesthetic:itcanbeseenasthereectionofsome

innate,innerquality,orthepursuitofphilosophicalorliteraryinsightintothenatureofharmony,reason,andtruth.”

Features

Highly Rened Circuit Design

AllPerreauxanalogueamplicationstagesarebasedoncircuitsthathavebeenextensivelyoptimisedover

manyyearsofcontinuousdevelopment.Bystartingwithexcellentcircuitdesignsandworkingwiththemover

theyears,weareabletodiscoverthemanysmallrenementsthatadduptosuperlativeperformance,ina

varietyofapplications.

Capacitor-Free Signal Path

Theinputsofthe255iareDCcoupledandthereisnotasinglecapacitorinthesignalpaththattheaudio

signalpassesthrough,improvinglow-frequencyresponseandlinearity.Therearenocapacitorstodegrade

overtimeandhinderperformance,sotheamplierwillessentiallysoundthesameyearsafteritsinitial

purchase.

Precision Volume Control

The255iusesasolid-statesteppedattenuatoroeringpreciseresolutionwithexceptionalchannelmatching.

Thesealedpackageandlackofmechanicalcontacts,resultsinanagelessvolumecontrol–wipernoiseand

componentdriftisathingofthepast.

Non-Invasive Balance Control

Balancecontrolinthe255iisaccomplishedwithouttheadditionofanyfurthercircuitry,therebyremovingits

potentialeectsontheaudiosignal.Thebalancecontrolbenetsfromthesamepreciseresolutionoeredby

thevolumecontrol.

MOSFET Technology

AswithallPerreauxproducts,the255iintegratedampliercapitalisesonthebenetsofusingMOSFET

technologyinitsoutputstages–excellenthigh-frequencyresponse,improveddistortionperformanceand

reliability.

Balanced Input

The255ifeaturesabalancedinputviaXLRconnectors,allowingoptimalperformancewiththemanyhigh-end

CDplayersandotheraudiocomponentsthatutilisethebenetsofbalancedoutputs.

Intuitive User Interface

Theinterfaceknobonthefrontpanelofthe255iistheheartoftheuserinterfaceexperience–allowing

fundamentalcontrolofthevolume,andintuitivenavigationandadjustmentwithinthe255imenusystem.

Highly Customisable

Manysettingsofthe255iareusercustomisable–inputsmaybenamedappropriately,selectonlyinputsthat

are used, precisely match volume levels between inputs, set inputs to bypass the volume control, set initial

andmaximumvolumes.Essentially,theampliercanoperateasifitwerecustomdesignedforyoursystem.

Theseareonlyaselectionoftheavailablesettingsyoucancustomise;continuereadingfordiscussionon

othercustomisablesettings.

Infrared Remote Control

Thesuppliedinfrared(IR)remotecontroloerscompletecontroloverthe255iinasmallandfunctional

package.ExternalcontrolbyIRisalsooeredviatheIRinputontherearpanel,shouldtheamplierbeinside

acabinetoroutsideline-of-sightoftheremotecontrol.

Smart Home Integration

The255icaneasilybeintegratedintoanysmarthome,usingtheRS-232portattherearoftheamplierand

interfacingtodevicesfromthelikesofControl4™,AMX™andCrestron™.CoupledwiththeIRinputand

Triggerinput,smarthomeintegrationhasneverbeeneasier.

Protection

The255iemploysseveralformsofprotection,bothforitsownself-preservationaswellastheprotectionof

loudspeakersandothercomponentstowhichitisconnected.TheprotectionmechanismsincludeDCoset,

over-current,ACpower,internalDCfuseandthermalprotection.

Construction

Regardlessofthetechnologyused,numerousdetailsmustbeexecutedtofullyrealisethepotentialofa

Perreauxdesign.Thequalityofindividualcomponents,thecareandcraftsmanshipwithwhichtheyare

assembledandtheexhaustiveinspectionandtestingweemployhelpraisethevalueofPerreauxproducts.In

addition to yielding the best performance, careful attention to details is the secret to achieving both reliability

andlongevity.

Optional Modules

The255ioersoptionalphonoandadigital-to-analogueconverter(DAC)module.Thephonomodulehas

selectablegainandissuitableforbothmovingmagnet(MM)andmovingcoil(MC)cartridges.TheDAC

moduleutilisesanES9038PROchipsetwith140dBdynamicrange,PCM384kHzandDSD256,asynchronous

galvanicallyisolatedUSBandoers5digitalinputs(2xcoaxial,2xopticalandUSB).Additionofthese

moduleswillensureseamlessintegrationintoanycurrentorfuturesystem.

Installation

Unpacking

The255iissuppliedwiththefollowingaccessories:

• Remotecontrol

• Mainslead

• Thismanual

Werecommendyouretainthepackagingforreuseincaseyouneedtotransporttheunitatalaterdate.

Placement

Your255iintegratedampliershouldgenerallybeplacedclosetoyourprimarysourcecomponent,keeping

interconnectcablingshort.Positionallothercomponentsofyoursystemcloseenoughtoyour255itoavoid

havingtostretchorextendanyoftheinterconnectcables.

Ventilation Requirements

Your255imaydissipateconsiderablepowerintheformofheat.Itshouldbeplacedinapositionthatdoesnot

restricttheairowaroundit.

Asa“ruleofthumb”,allowatleast80mm(3inches)aboveandtoeachsideoftheunitandmountthe255iona

atsurfaceforaircirculationtoallowthisheattodissipate.Donotsitdirectlyontoacarpetedsurfaceasitwill

preventtheheatsinksfromoperatingasdesigned

Ifthedeviceisusedinacabinet,airmustbeabletoowthrough.Anenclosedcabinetwillseverelyrestrictheat

dissipation.

Ensurethatnothingisplacedaboveorbelowtheamplierthatmightblockorrestrictthevents.

Ifthe255ihasinadequateventilationand/orisplayedveryenthusiasticallyforaperiodoftime,itstemperature

mayriseabovethedesignatedoperatinglevelandtheover-temperatureprotectionwilltrip–disconnectingthe

outputuntilithascooledsuciently.

Other Devices

Ideally,your255iintegratedampliershouldnotbelocateddirectlyaboveoradjacenttootherheat-producing

productssuchasradiators,otherpowerampliers,etc.Ifmultipleampliersarebeingusedandspaceis

restricted,placingthemsidebysideispreferabletostacking.

Itisadvisabletopositionyour255iawayfrom(andifpossible,connectedtoapowersocketonadierent

circuitfrom)powerfulelectricalorelectronicproductssuchasTVsets,computers,cookers,fridgesetc.Thiswill

preventthepossibilityofthestrongelectricalandelectromagneticemissionsorinterferencegivenobysuch

devicesadverselyaectingtheperformanceofyouramplier.

Ifyouarelikeus,therstthingyouwillwanttodoistoplayyourfavouritepieceofmusicthroughyournew

255iintegratedamplier.Thefollowinginstructionsarewrittentoenableyoutoachievethisasquicklyas

possible.Thesearenotcomprehensiveinstructions,butaredesignedtoenableyoutoplaymusicnow!

Pleasetakethetimetoreadthismanualthoroughly,asthe255iincorporatesmanyfeatureswhichenhanceits

operation.

Turn o associated components

Thisminimisesthepotentialtodamageyour255i,oranyothercomponents,whenconnectingthedeviceinto

yoursystem.

Connect a source component

Forexample,connectthebalancedoutputsofyourCDplayertotheleftandrightbalanced(XLR)inputsatthe

rearofyour255i.

Connect loudspeaker cables

Connecttheleftandrightchannelloudspeakercablestotheappropriatespeakerbindingpostsattherearof

theamplier.

Switch on source component

Turnonthesourcecomponent,makingsureyouhaveyourfavouriterecordingreadytoplay.

Switch on your 255i

Aftercheckingthesupplyvoltagecompatibilitywiththevoltageratingontherearpanel,insertthepowercord

suppliedintotherearoftheunitandintothewallsocket.Switchontheamplierusingthebuttononthefront

panel.

Select the appropriate input

Usingthe∧/∨buttonsonthefrontpanelofyour255i,ortheremotecontrol,selecttheinputtowhichthe

sourcecomponentisconnected.

Play your source material

Startplayingyourfavouriterecording.

Increase the volume

Slowlyincreasethevolumeonyour255itoachieveacomfortablelisteninglevel.

Congratulations!

Nowthatyouhaveachievedyourrstobjective,sitback,relaxandpleasereadtherestofthemanualatyour

ownpace,inyourfavouritearmchair,whilstenjoyingaglassofwine.You’llndthewholeexperiencemuch

morepleasurablewhilstlisteningtomusic.

Quick Start

Important:

Beforemakinganyconnections,switchothemainspowertoallcomponentsinyoursystem.

1 Balanced Input

Thebalanced(XLR)inputsacceptsignalsfromasourcecomponentwithbalancedoutputs.

ThepinassignmentsoftheXLRinputconnectorsare:

 Pin1:Signalground

 Pin2:Signal+(non-inverting)

 Pin3:Signal–(inverting)

 Shieldground:Chassisground

Pleaserefertotheowner’smanualofyourbalancedoutputsourcetoverifythatthepinassignmentsofthe

outputconnectorscorrespondtothe255i.Ifthisisnotthecase,wirethecablessothattheappropriateoutput

pinconnectstotheequivalentinputpin.

2 Amp In

Theunbalanced(RCA)ampininputsallowdirectconnectiontothepowerampliersectionsofyour255iwhen

usedinconjunctionwiththeSeparatefunction(seeSeparate,page24).

3 Pre Out

Theunbalanced(RCA)preampoutputsprovideasingle-endedpreamplevelaudiosignalforconnectiontoanexternal

poweramplieroractivesubwoofer.

4 Tape Out

Theunbalanced(RCA)tapeoutputsprovideasingle-endedlinelevelaudiosignal,suitableforrecordingfrom

theselectedsourceinput.ThisoutputisdisconnectedwhenINPUT5isselected;topreventanypotentially

damagingfeedbackloopsifthetapeoutputisconnectedtothisinput.

Connecting - Rear panel

121 46 2 345 87 9 10 1011 12 133

5 Trigger Input

Thetriggerinputallowsyour255iintegratedampliertobebroughtinandoutofstandbybyaremotely

connecteddevice;forexample,anotheraudiocomponentorahomeautomationsystem.Thetriggerinputuses

amono3.5mm(⅛”)plugandacceptsvoltagesof0VDCupto12VDC.Atriggervoltagebetween3Vand12V

DCwillbringtheamplieroutofstandbyanditwillenterstandbywhenthetriggervoltageis0VDC.

Thetriggerinputplugmustmeetthespecicationsshownbelow:

Sleeve:GND

      Tip:Signal

6 Trigger Output

Thetriggeroutputallowsyour255itocontrolthestandbystateofaremotelyconnecteddevice.Theremote

triggeroutputacceptsamono3.5mm(⅛”)plug.Thetriggeroutputvoltageis12VDCwhentheamplierisnotin

standbyandis0VDCwheninstandby.

Thetriggeroutputplugmustmeetthespecicationsshownbelow:

Sleeve:GND

      Tip:Signal

7 IR Input

TheIR(infrared)inputallowsyour255itoreceiveun-modulatedcommandsfromhomeautomationsystemsor

othercomponents.

TheIRinputusesastereo3.5mm(⅛”)plug,andacceptsvoltagesof0VDCupto12VDC.Theplugmustmeet

thespecicationsshownbelow:

Sleeve:Noconnection

      Ring:GND

      Tip:Signal

UsinganexternalIRreceivermodule(forexample,Xantech490-30MicroLink™IRreceiver)allowstheamplier

tobeplacedinsideacabinetoroutsidethenormalline-of-sightoftheremotecontrol.Theplugmustmeetthe

specicationsshownbelow:

Sleeve:+12VDC

      Ring:GND

      Tip:Signal

Note: Donotuseamono3.5mm(⅛”)plug,thismaycausedamagetotheIRinput.

Sleeve Ring Tip

Sleeve Tip

Connecting - Rear panel continued

8 IR Output

TheIR(infrared)outputallowsyour255itorelayun-modulatedcommandsreceivedviatheIRsensoronthefront

panel,ortopassoncommandsfromhomeautomationsystemsorothercomponentsreceivedviatheIRinput.

TheIRoutputusesamono3.5mm(⅛”)plug,andtransmitsvoltagesfrom0VDCupto12VDC.Theplugmust

meetthespecicationsshownbelow:

Sleeve:GND

      Tip:Signal

9 RS-232 Port

TheRS-232(RJ45)portisusedbothfordownloadingnewoperatingsoftwareintoyour255iintegratedamplier

(forexample,shouldnewfeatureseverbeadded),andalsoforexternalcontroloftheamplierbysystemssuch

asControl4™,AMX™andCrestron™.Formoreinformation,pleasecontactyourdealerandaskabouthome

automationsystems.

10 Analogue Inputs

Theunbalanced(RCA)analogueinputsacceptsignalsfromsourcecomponentswithsingle-endedoutputs.

Input 1 / phono

Ifyouhaveaturntableyouwouldliketousewiththesystem,anoptionalphonomoduleisavailablefromyour

Perreauxdealer.Onceinstalledinyour255i,theInput1connectorsbecomeyourphonoinputs,andthephono

optionsinthemenusystembecomeactive.

Input 4 / Theatre

Input4issetasahometheatreloop(HTLOOP)straightfromthefactoryandbypassesthevolumecontrol.

Pleaseensurethevolumeleveloftheconnectedprocessororreceiverissuitablyattenuatedbeforeselectingthis

input.

11 AC Mains Input

TheIECstandardACmainsinputisusedwiththeremovablepowercordtosupplyyour255iintegratedamplier

withpower.

PriortoconnectiontotheACmains,pleasecheckthevoltagelabelontherearpaneltoensurethatyouramplier

conformstothepowersupplyinyourarea.Neverattempttoconnecttheunittoanincorrectvoltage–severe

damagemayresult.

12 AC Mains Fuse

TheACmainsfuseisuserserviceable,andshouldalwaysbereplacedwiththesametypeandrating(see

TechnicalSpecications,page27).

Notes: Fusesdonotusuallyblowwithoutareason.Anydoubtsaboutfusefailureshouldbeconveyeddirectlyto

yourPerreauxdealer.

Ensureyour255iisdisconnectedfromthemainspowerbeforeattemptingtochangethefuse.

13 Ground Terminal

Thegroundterminalonyour255iismostoftenusedforthegroundwireofaturntable,ifyouhavetheoptional

phonopreamplierinstalled.Connectingthegroundwirefromyourturntablestonearmtothisterminalusually

minimisesanyhumorbuzzingtowhichtheturntablemayotherwisebesusceptible.YourauthorisedPerreaux

dealercanassistyouinhandlingthisproblemifitshouldarise.

Sleeve Tip

Operation - Front Panel

1 Standby Button

Thestandbybuttonswitchestheamplierbetweennormaloperationandstandby.

2 The LED indicator

TheLEDindicatorshowstheACmainspowerstatusofyour255i.TheLEDisilluminatedwhenthepowerswitchat

therearoftheamplierisswitchedonandashesslowlytoindicatetheunitispoweringupandinitialising.

3 Volume Control/Interface Knob

Rotatetoadjustthevolumeleveloftheloudspeakeroutputandthepreampoutput.ItdoesnotaecttheTAPE

output.

Thevolumeisraisedorloweredinprecise0.5dBincrementsthroughouttheentiregainrange.Thevolume

incrementwillincreasethefastertheknobisrotated,makingiteasiertomovequicklybetweenextremelylow

andnormallisteninglevels.

Note:Whenthehometheatreinput(HTLOOP)isselected,oraninputissettobypassthevolumecontrol(see

Bypass,page22),theinterfaceknobwillhavenoeectonthevolumelevel.

Theinterfaceknobisalsousedinnavigatingthemenusystem(seeTheMenuSystem,page17).

4 Infrared Sensor

Receivesinfrared(IR)commandsfromthesuppliedremotecontrol.Ordinarily,your255imusthaveunobstructed

line-of-sightwiththeremotecontrolinordertorespondtoremotecontrolcommands.

Ifyourintegratedamplieristobeplacedinsideacabinet,youmayusetheIRinputattherearoftheunit

(seeIRInput,page12)tosolvetheproblem.

5 Front Panel Buttons

Usethesebuttonstocontrolyour255iintegratedamplier.Theyarealsousedtonavigatetheéloquencemenu

systemand,alongwiththeinterfaceknob,makeanychangestothesettings.

Note:Thefunctionofthesebuttonswilldierdependingonwhichstatetheamplierisin.

1 3 4 52 7

6 Display

Theliquidcrystaldisplay(LCD)usedtoshowinformationrelatingtotheoperationandstatusofyouréloquence

250iintegratedamplier.

7 Auxiliary Input

Theauxiliaryinputallowstheconnectionofaportableauxiliarysource,forexampleaniPod™MP3player.The

auxiliaryinputacceptsa3.5mm(⅛”)stereoplug.

Notes:TheAUXILIARYinputwillautomaticallybeselectedasthecurrentsourcewhenaplugisconnected.

When the plug is disconnected, the input will revert to the last selected source, unless another source input was

selectedwhiletheauxiliarywasstillconnected.

Thevolumeoftheauxiliarysourceshouldbesettothehighestlevelwhichprovidesthebestperformance

withoutdistortingtheaudio.

8 Headphone Output

Theheadphoneoutputallowsconnectionofheadphoneswitha6.4mm(¼”)plug.Headphoneswithan

impedanceofbetween32Ωand600Ωarerecommended.Whentheheadphonesareconnected,theoutputto

theloudspeakersisdisconnected.

Operation - Front panel continued

The255iintegratedampliercomessuppliedwithaninfrared

remotecontrol.

1 Standby

Thestandbykeyswitchestheamplierbetweennormaloperation

andstandby.Pressingthisbuttonputsthe255iintostandby,

disconnecting all power supplies except the digital power supply

forthemicrocontrollerandturningotheremotetriggeroutputs.

2 Time

Thetimekeyshowsthetimeonthedisplayoftheamplier.

3 Navigation Keys

Thenavigationkeysareusedtonavigateyourwayaroundthe255i

menusystemandadjustvarioussettings(seeTheMenuSystem,

page17).

4 Menu

Themenukeycallsupthe255imenusystem,allowingyouto

customisevarioussettingsforintegrationintoyoursystem(see

TheMenuSystem,page17).

5 Mute

Themutekeycausesthevolumeoftheampliertobemuted,or

attenuatedbyausercustomisedamount(seeMute,page17).

6 Display

Thedisplaykeyadjuststhedisplayoptions,scrollingthroughFULL,

Operation - Remote Control

DISPMENU

TIME

S1 S2 S3

S4 S5 S6

PERREAUX

VOLUMESOURCE

MEDIUMandLOWbrightnessanddisplayOFF.

Notes:IfthedisplayissettoOFF,thedisplaywillturnonwhenuserinputisdetectedthenautomaticallyturno

afterthetimeoutdurationhaselapsed.

Settingthedisplayoptionusingtheremotecontrolisonlytemporaryandwillreverttothesettingsinthemenu

systemwhentheamplierisbroughtoutofstandby.Tomakethedisplayoptionspermanentyoumustsetthe

appropriatedisplaysettingsinthemenusystem(seeDisplay,page23).

7 Volume Up and Down

Thevolumekeysadjustthevolumeoftheamplier.Thevolumeisadjustedslowlyatrstandprogressively

increasesthelongerthevolumekeysareheld.Thisallowsbothneadjustmentswhilemakingiteasiertomove

quicklybetweenextremelylowandnormallisteninglevels.

Note:Whenthehometheatreinput(HTLOOP)isselected,oraninputissettobypassthevolumecontrol(see

Bypass,page22),thevolumekeyswillhavenoeect.

8 Source Up and Down

Thesourcekeysscrollthroughthesourceinputs,providedtheyareenabled(seeEnable,page20).Ifaninputis

disableditwillnotbeavailableforselectionusingthesourcekeys,althoughitcanstillbeselectedusingthes-keys.

9 S-Keys

Thes-keysprovidedirectselectionofsourceinputs,andcanbecustomisedtoselectyoursixmostfrequently

usedinputs(seeS-Keys,page25).

The Menu System

Themenusystemcanbeusedtocongurethe255i to customise aspects of its operation to suit your

requirements,tooperateinaparticulartypeofinstallation,ortoviewimportantfunctionaldata.

Home Screen

Thehomescreenprovideseasyaccesstothebasicfunctionsoftheintegratedamplier:volumecontrol,input

selectionandmute.Italsoprovidesaneasytoreadandhighlylegibledepictionoftheselectedinputand

currentvolumesetting.

Volume Control

Adjustthevolumesettingusingtheinterfaceknobonthefrontpanel(orusingtheremotecontrol).Thedisplay

willshowthevolumelevelindecibels(dB).Themaximumvolumesettingis+31.5dB,whilelowervolume

settingsprogressintothenegativerangewiththeminimumbeing-96.0dB.

Input Selection

Scrollthroughtheavailableinputsusingthe∧/∨buttonsonthefrontpanel(orusingtheremotecontrol).

Notes: Thelabelsfortheinputs,asdisplayedonthefrontpanel,canbecustomisedforyourconvenience(see

Labels,page19).Disablinganinput(seeEnable,page20)removesitfromselectionbyscrollingfromthefront

panelorremotecontrol(althoughitisstillavailableforselectionviathemenusystemandtheremotecontrols-keys).

Mute

MutethevolumebypressingtheMUTEbuttononthefrontpanel(orusingtheremotecontrol).Themutemode

isindicatedbythevolumelevelbeingreplacedwithMUTEDinthedisplay,whichasheswhilemutemodeis

enabled.

Ifyouincreasethevolumewhilemuteisenabled,themutemodewillbecancelledandthevolumewillincrease

fromthemutedlevel.Thisisasafetymeasuretoavoidsituationswherethevolumemightbeincreasedwhile

muted,onlytohavethesystemun-mutedtoanunexpectedlyhighvolume.

Whenmuteiscancelled,thevolumelevelreplacesMUTEDinthedisplayandstopsashing.

Ifyoudecreasethevolumewhileattenuationisenabled,thevolumelevelwillreducewhilstremaininginthe

attenuatedmode.Whenmuteiscancelled,thevolumelevelwillincreasebythesetattenuationlevel.

Entering and Navigating the Menus

Using the remote control:

 • PressMENU.

• Navigateupordowntheoptionswithinamenuusing∧/∨.

• Press>orOKtoselectanoption.

• Press<togobacktothepreviousoptionormenu.

• Alterthesettingusing</>.

• PressOKtosaveasetting.

• PressMENUwhilesettinganoptiontoreturntothemenu.

• PressMENUwhileinthemenuscreentoexitthemenuandreturntothehomescreen.

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Perreaux 255i Integrated Amplifier User manual

Brand: Perreaux

Model: 255i Integrated Amplifier

Category: Headphone amplifiers

Type: User manual

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Perreaux 255i Integrated Amplifier User manual

Perreaux 255i Integrated Amplifier User manual

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