Jay's Audio DAC2-MK3 User manual




WWW.JAYS‐AUDIO.COM  Page1of10

JAY’S AUDIO
DAC2-MK3



USER MANUAL






WWW.JAYS‐AUDIO.COM  Page2of10

QUICK START GUIDE
1. AfterreceivingtheDAC,pleasedonotrushtopoweritup.First,checkthephysical
appearanceofanydamagemaybecausedbyshipping.
2. Pluginthepowercordfirmlyandturnontherearpowerswitch.
3. TheDACshallturnon.Thedisplayshallturnon.
4. Connectsdigitalinputfromthesources(SPDIF/USB/I2S/OPT)totheDAC.
5. ConnectsRCAorXLRoutputfromtheDACtotheamplifier
6. ChoosethecorrectinputbypressingtheINPUTbutton,playsomemusic

TIPS
1. TheDACwillworkatitsbestqualityafteranhourofwarmingup.
2. PowerOn/Off
 Turnon/offthepowerswitchattherearpaneltoturnon/offtheunit.
 Itissafetoleavethepowerswitchon24/7
3. Whennotinuseforalongperiodoftime,itisrecommendedtoswitchoffthemain
powerswitchtosavetheearth.
4. TheDACneedsabout400hourstoburnin.




WWW.JAYS‐AUDIO.COM  Page3of10

INTRODUCTION
Jay’sAudioproductsarebuiltwithperformanceanddurabilityinmind.Eachproductis
testedcarefullywithAudioPrecisionAPX525priortoshipping.Carefulinstallationofthe
productwillensurethecorrectperformanceandensuretheproductisatitsfullpotential.

PACKAGECONTENTS
1. ACMainsPowerCord
2. Gloves
3. RemoteControlUnit
4. DAC2‐MK3

UNPACKING
TheDACisshippedwithsturdydoubleboxes.Pleasekeeptheboxshouldyouneedto
transporttheunittoanotherlocation.

CarefullyunpackagetheDAC,placeitonastablesurface,i.e.HiFiRack.Youmaywishtouse
theglovesprovidedwhilehandlingtheDAC.









WWW.JAYS‐AUDIO.COM  Page4of10

CONNECTIONS
Theconnectionsofpowercord,interconnectcablesarelocatedattherearpanelofthe
DAC.Forbothsafetyandperformance,pleaseusequalitycablefromreputablesuppliers.
i.e.StudioGradecable,namely,Gotham/Sommercable/Mogami/Belden,etc.


Figure1. DAC2RearPanel

(1) ACMAINSPOWERSWITCH
SwitchOn/Offtheunitbyusingthepowerswitch.0denotesOff,1denotesOn.

(2) ACMAINSPOWERIECSOCKET
TheACMainsisfittedwithamainsfuse,ratedat1.6A,5x20mm,SlowBlow.Replacethe
fuseshouldthefuseblownwiththesparefuseprovided,orwiththeidenticalfuserating.
Frequentfuseblownisconsideredafault.Pleasecontactustoinvestigatetheissuefurther.

ConnectthepowercordtotheACMainsIECinletfirmly.

(3) DIGITALINPUT
3
1
2
4




WWW.JAYS‐AUDIO.COM  Page5of10

TheDAC2isequippedwithsix(6)DigitalInput.FromtheLefttotheRight:
 OPT
 SPDIF–RCA
 SPDIF–BNC
 AES/EBU
 HDMII2S(LVDS)
 USB
HDMII2S(LVDS)


Figure2. HDMII2SPinout

ThereisnoindustrystandardofI2Sconnection.WecouldnotguaranteetheI2Sconnection
workabilitywithyourDAC.Thisshallnotbeconsideredasadefectshouldthematching
failed.

ListofverifiedandtestedSourceDevices:
 JAY’SAUDIOCDT2‐MK2/MK3






WWW.JAYS‐AUDIO.COM  Page6of10

OPERATION

Figure3. DAC2

(1) IndicationofSelectedInputSignal.
TherespectiveLEDshalllightupwhentheinputisselected.i.eBNCLEDlightupindicates
thattheBNCinputisselected

(2) SamplingRateDisplay
o 44–44.1KHz
o 48–48KHz
o X2,X4,X8–Multiplierofthebasedsamplingratefrequency
o DSD
(3) InputSelector
(4) OutputVolumeDisplay
(5) FilterSelection
o Red–LinearPhasefilter,alsocalledbrickwallfilter
o Orange–MixbetweenLinearandMinimumPhasefilter
o Green–MinimumPhasefilter,alsocalledbutterworthfilter
o Off–SoftMinimumPhasefilter,asoftbutterworthfilter 
(1)
(2) (3) (4) (5) (6) (7)




WWW.JAYS‐AUDIO.COM  Page7of10

(6) XFEED
SelecttheCrossfeedmodeforHeadphonesapplication.TheCrossfeedfunctionisusedto
makethestereoimagesmaller,tomakeitsoundmorelikethestereoimagefromspeakers.
“XFEED”LEDcolorshowsthecurrentcrossfeedmodeselectedfortheheadphones
 OffCrossfeedcircuitdisabled
 GreenSmallCrossfeed,‐12dBsenttootherchannel
 OrangeMediumCrossfeed,‐8dBsenttootherchannel
 RedLargeCrossfeed,‐5dBsenttootherchannel

(7) VolumeKnob
ThevolumeLEDdisplayindicatescurrentvolume,from‐90dBto+10dB.Thevolumeknob
isusingadigitalencodertosetthevolumeleveldigitallyfrom‐90dBto+10dBinprecise1
dBsteps.

IfyouconnecttheLineOuttoasystemwithavolumeknobyoumightwanttosetthe
dac2541LineOutvolumestartupleveltoafixed0dB,youcandothatbyselectingLineOut,
turningthevolumeupto‐4orhigher,thenstorethestartupsettingbypressingandholding
the“FILTER”buttonfor4seconds.Thevolumecontrolistheninactive,itcanbemadeactive
againbyholdingthe“FILTER”buttonfor4secondsagain.







WWW.JAYS‐AUDIO.COM  Page8of10

REMOTECONTROL



‐ Up:IncreaseOutputVol
‐ Down:DecreaseOutputVol
‐ Left:InputSelection


*CR2032batteryisrequired

DESIGNHIGHLIGHT
 FlagshipSoekrisdam1941‐12R‐2RD/Amodule
 Jay'sAudiotunedDiscreteAnalogOutputStage.
 SCHURTERIECInlet
 ImprovedNoiseFilterwith110v/230vswitching
 HighqualityTalemaEncapsulatedTransformers
 MultistageSuperRegulatorwithboutiquegradehighqualitycomponents
 HDMII2SLVDSInput
 FullCNCMilledAluminiumChassis




WWW.JAYS‐AUDIO.COM  Page9of10


Figure4. InternalofDAC2

*Premiumcomponentsavailableexclusivelyatflagshipstoreonly





WWW.JAYS‐AUDIO.COM  Page10of10

SPECIFICAITON
Parameters

o PCM384/DSD128(USB)
o PCM384/DSD256(i2sInput)
o PCM192kHz(AllInput)
o FrequencyResponse:20‐20kHz(±0.1dB)
o S/NRatio:>118dB(1kHz,‐0dBFS)
o ChannelSeparation:>122dB
o ACPower:110/240VAC,50/60Hz

Output

o Output:RCA(1.9Vrms),XLR(3.8Vrms)

Dimension&Weight

o Dimension:430Wx380Dx120H
o Weight:15KG

AvailableColor:

o Silver/Black

Warranty:36months





