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  • 14/12/2015 ReMusicDettaglioarticolo

    http://www.remusic.it/IT/PrephonoPerreauxAudiantVP3b2f7f200 1/4

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    HOME REDAZIONALI NOVIT MUSICA LIBRI MANIFESTO METODO CONTATTI NEWSLETTER

    PROVEAPPARECCHI ANALOGICO DIGITALE AMPLIFICAZIONE DIFFUSORI CAVI ACCESSORI

    alsitoPerreaux

    23.11.15

    PrephonoPerreauxAudiantVP3diGiuseppeTrotto

    ThetitleofthisarticleshouldreallybePerreauxAudiantVP3VinylPreamplifier,becausethenamebywhichthesubjectofthisreviewisdefinedbytheNewZealandbasedPerreauxwasnotchosenatrandom.Unlikethemajorityofexistingpreamplifierscounterparts,whoareunitedintheuseofthedefinitionphono,ortheprefixPH,maybewithadjoiningnumberingtomarktheprogressiveversions,itisthedesignatedVinylPreamplifier,asiftoemphasizeitsnoblefunction:totreatthesignalfromananalogsource,properlyunderstoodasavinylrecordgroove.FortunatelywiththeVP3wearenotinthepresenceofoneofthemanypreamplifiersthatactonlyasaconnectionbetweencartridgeandamplifier.IreadthepresenceofthetermVINYLasadesignstatement,likethis:Dearmusiclovers,weareawarethatweliveinadigitalage,buttheVP3isallaboutanalog.Thedigitizationofthepresenteraisnot,however,unfamiliarordislikedbyPerreaux.Thisbeautifulpreamplifierisnotequippedwithknobsorbuttons.TheswitchfromstandbyandselectingfunctionsMovingMagnet,MovingCoilandMonoismadeintouchmode,orfingeringtherelevantindicatorsthatlightonthebottomsectionofthefront,whichactsasascreen.Therestofthechassisisveryrobust,consistingofasilveranodisedaluminumtopwhichwrapsoverthefront,revealingthePerreauxlogo.Thesidesandbasearebothblack.RemovingtheblackbasefromtheVP3revealstheelectroniccircuitrywhichisdirectlyaffixedtotheundersideofthealuminumextrusion,whichisactuallythecover,sotospeak.Thisisingenious,becausethemassivealuminumpaneleffectivelybecomesaheatsinkfortheelectroniccomponents.Airventilatestheinteriorspacebytravellingupthroughthebottomoftheunitandthenoutfromthesides.Thecomponentryisofthehighestqualityandithasbeendesignedwithorderandrationality.TheinternalpowersupplycircuitisdominatedbyatoroidaltransformermanufacturedbyNoratel,whichguaranteesabsoluteaccuracyandrefinedenergyreservesfortheentireelectronicdevice.ThePCBhasbeencarefullylaidoutistomaximizeseparationbetweensensitivesignalsandthepowersupply,andtoensureaperfectlymirroredsymmetrybothinternallyandattherearpanel.Inthiswayitensurestheverylowestlevelsofnoiseandmaximizeschannelseparation.ThisisalsoabsolutelynecessaryinthecaseofPerreauxAudiantVP3,whichisalsodesignedtoallowthesimultaneousconnectionoftwoturntablecartridges.TherearpanelalsocontainsapowerswitchandIECpowerconnectorwithbuiltin

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  • 14/12/2015 ReMusicDettaglioarticolo

    http://www.remusic.it/IT/PrephonoPerreauxAudiantVP3b2f7f200 2/4

    fuse.Thereisalsoatriggerinput,whichenablestheusertodrivetheVP3intoandoutofstandbybymeansofanothercomponentbothaudioandhomeautomation.Thisinputacceptsamono3.5mmpluganditsvoltagefromzerototwelvevoltsDC.Between3and12voltstheunitwillexitstandby,toreturnintostandbyagainatzerovolts.AnRS232portprovidestheVP3withthepossibilityofanexternalserialcontrolaimedatindividualinstallations.AcontrolsetisavailableonthePerreauxwebsite.Theportcanalsobeusedbyauthorizedpersonnelforfirmwareupdates.Therearpanelalsofeaturesaseriesofphonoinputsandcorrespondingoutputs.Ispeakinpluralbecause,asmentionedpreviously,thereisapairofRCAforMMcartridgesandonepairfortheMC,placedwellawayfromeachotherforisolationreasonssetoutabove.Arealsomultipleoutputs,apairunbalancedandonebalancedXLR.ItispossibletoconnectoneturntablefeaturinganMCcartridgeandanotherturntablecontaininganMMcartridgebothsimultaneouslytotherearoftheVP3andswitchbetweenthemfromthefrontpanel.Therearpanelalsofeaturesagroundterminal.Alloftheconnectorsdescribedareofexcellentqualityandaregoldplated.Therearpanelalsofeaturesmicroslots,withinwhicharehousedaseriesofdipswitchesdedicatedtothegainadjustment,IEC/RIAAcurves,resistiveandcapacitiveloadings.Theuniquenessoftheswitchesisinthefactthattheyareallmirrored,whichmeansthattheloadsthemselvesmustbemanagedforeachindividualchannel,bothincomingandoutgoing.WhenconfiguringtheMMinput,thegainobtainablethroughvaryingthevaluesof36dBandasensitivityof11.9mV,40mVand7.5dB,44dBand4.7mV,48dBand3,0mV.MCforthatscaleis56dBand1,2mV,60dBand0.7mV,0.5mVand64dB,68dBand0.3mV.ThefourthdipswitchisdevotedtotheselectionoftheRIAA,RIAAEqualizationdistinctinNormalCurveandIECRIAAEqualizationCurves.Usingafurthersequenceofswitches,wecanobtainthefollowingloads.ForMM,47Ohms,1kOhm,10kOhm,22pF,47pF,100pF,220pF,470pF.ForMC,47Ohms,10ohms,30ohms,100ohms,250ohms,500ohms,1kOhm,47pF.Theabilitytocombineallthedatavalues,givesaveryhighlevelofcustomization,includingthemostdifficultintermsofinternalimpedance,frequencyresponseandoutputvalue.Toendthedescriptionoftechnical/physicalonecannotoverlookthefactthattheVP3VinylPreamplifiernotappearatallnegligibleinsize431x67x277mm(WxHxD)andweight(7.5kg).Completetheequipmentofthepackagingapowercordcommon,adeliciouselegantlyboundmanual,verycomprehensiveandrifewithsetupexamples.InadditiontothisPerreauxincludetwotestsheetswhicharetheactualgraphsofthemeasurements,whichisthetotalharmonicdistortion,frequencyresponse,andthespectrumanalysis,coveringbothMMandMCinputs.Needlesstosay,theplottedcurvesprovideindicationsofexcellentlaboratoryperformance.Americansexclaim:"impressive."Beforemovingtolisteningimpressions,Ithinkitisappropriate,giventheworkinprogressnatureofmysystem,topointoutthecomponentsoftheaudiochain,inordertoshedlightonthedegreeofreference.TurntableDaVinciAudioInUnison001,withseparatemotor,flywheelintermediatehomebuilt,flyingAerexEngineeringsupport,Kevlarbeltsandsilk.ArmDaVinciReferenceSize12'',900headsSupexSuperKoetsuandRosewood,stepuptransformersAudioTekneMCT9401andSupexSDT77.PreamplifiertransformersandvalvesAudioTekneTP8301MKIII.PoweramplifierTekneIT2formediumtohigh.LoudspeakersNTSMurianoResearchforlowtomedium:asurprisingelectronicdesignalternativewhichIwilltalksoon.CarspeakersAltecassembledwithcomponentsandKlipschhighefficiency.SupertweeterEnigmacousticsSopranino.AudiocablesTekne,WesternElectric,VermouthAudio,AudioConsultingandDIY.Mobileandsupportsinstone,Irokoandbeech.ItellyounowthatthePerreauxVP3notequaled,butashecould,theperformanceoftheintegratedAudioTeknephonostages,buthasmanifesteditselfasoneofthebestamongtheprethathavebeentestedinthesystemtodate.Onthefaceofitaphonostagesisacomponentofcomparativesimplicity,howeverinpracticeitfeaturesformidabledesignchallenges,inpartbecauseofitsexceptionallydelicateoperationalfunctions,namelytoprovideforthecareandmanagementofaninfinitesimallysmallelectricalsignal.Thissignalisproducedbytheinteractionbetweenthevinylsurfacewhichisfarfromsmoothandthetinyneedlethatsubsequently,throughthegauntletofamechanical/electrical(cartridge)farfrominsensitivetoinnatecharacteristicsofmaterials(coils,cantilever,suspension,body)andexternalfactors(magneticfield,resonance,humidity,temperature,etc.).Toundergostillnewstressescausedbythetonearmandimpedancelevelsandabilitiestypicalcablingandterminations.Seethenasaprocessapparentlysimple,conceal,onthecontrary,anumberofsignificantroughness.Inthiscase,thewiderangeofpossibilitiesofsettingtheuserprovidesafundamentaltoolinordertoobtainanultrainterfacingendoftheheadturn.Itshouldbeborneinmindthatahappycombinationelectricequivalenttoaleveloflisteningjustashappy.ForthisreasonIwouldsuggestnottorelytotallytothemanufacturerasitpertainstotheloadsofthehead,butleavehearingandhismusicalsensibilityIhopematureagooddealofautonomyperceptive,justtobeabletomodulateadjustmentsinsuchawayastoreachthetopofthebalancebetweenendogenousandexogenousfactorsmentionedabove.Likeallelectronicequipment,thePerreauxVP3requiresverylongrunintime.Imtalkingdays,nothours,afterwhichitwillseemtobecomeanotherproductalltogether,whencomparedtotheoriginal.Thetestwasrunusing

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