REPRODUCEDFROMHI-FI+
ByAlanSircom
TheLEOGXisyourfirstReferenceMaster Clock.Whatmakesitstandoutagainstits rivals? LEO GXisabreakthroughindigitalaudio systemclocking—thefirstmasterclockever thatcanworkwithaDACdirectlytaking controloftheVEGAG2clock.Insteadof merelysynchronizingwiththeLEOGX,the VEGA G2actualyusestheexceptionaly highfrequencyincomingclockfromtheLEO GXdirectlyasitsownworkingsignal.In otherwords,the LEO GX bypasesthe internalVEGAG2clockcircuitentirelyand driveswaveformcreationdirectlywithits signal.NomorePLL(phase-lockedloop), andnomorelimitations. TheLEOGXclockissoprecisethatexisting benchmarks aren’t detailed enough to acuratelyrepresentwhatitcando.Instead, we use Alan deviation to describe the resolutionoftheLEO GX,whichislike lookingatphasenoisecloselyenoughto detectshiftsof+/-1Hzoreven+/-0.1Hz.The AlandeviationoftheLEOGXReference
MasterClockcomesinat2E-12(at1second),whichis equaltoa10MHzrubidium atomicclockwithphase noiseof+/-1Hzat-110dBc/Hz,oranamazing500 timeslesjiterthanan82fsFemtoclockoscilator. Why‘LEOGX’asopposedto‘LEOG2’? LEO takesthe“X”designationhoweverbecauseits clockingdutieswilbeglobalyapplicabletofutureG Seriessystemsaswel.Soifweofernextgeneration modelsdowntheroad,LEOGXwilremaincompatible withanyupdatedGseriesDACs. DescribethestepsforsomeonebuildingaG2-Series digitalsystem.Isthereauniversalprogresionas yougofromoneboxtothecompletesystem? G2seriesisdesignedtobeveryflexiblewithproducts tosuitdiferentapplications.Forinstance,ARIESG2is perfectforthosewantingtoaddtopperformance streamingtoasystem,withtheoptionofinternal storage,whichalreadyhasaDACbecausetheunitis designedwithdigitaloutonS/PDIFandUSB— Ithink that’swhytheoriginalARIESwassopopularfindingits wayintomanyhigh-endseparatessystems.TheVEGA G2wilfurtherimprovetheperformancewhen
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