ADL GT40 - Can the ADL GT40 be Used as a Preamplifier; Can the GT40 be Used with 64 Bit Operating Systems?; Is the GT40 Compatible with WASAPI?

shouldbesetatitsmaximumandthespeakervolumeatitsminimum.Volumewouldthenbeadjustedatthe
speakers.

Q13:CantheADLGT40beusedasapreamplifier
A13:TheGT40hasbeendesignedtoworkwithapreamp,butitputsoutenoughvoltagetobepaired
withanamp
andsensitivespeakersanduseddirectlywithitshighqualityvolumecontrol
A13‐1:ThevolumecontrolwilladjustvolumeforboththeheadphoneoutputandRCAlineoutoutput.

Q14.CantheGT40beusedwith64bitoperatingsystems?
A14:Yes

Q15:IstheGT40compatible
withWASAPI?
A15:WASAPIisanOSapplicationandmaynotbecompatiblewithsomeplaybacksoftware.Foorbar2000softwareis
knowntobecompatiblewithWASAPI.

Q16:IsitpossibletoconnectlinearPCMrecordersdirectlytotheGT40viaUSBforplayback?
A16:TheGT40USBDACiscompatiblewith
computerbasedsound dataonly.PleaseuploadPCMrecordeddatato
yourcomputerandthenplaybackviatheGT40. 

Q17:ThemanualpackagedwiththeGT40doesnotshowset‐upinstructionsforWindows7.IstheGT40
compatiblewithWindows7?
A17:theGT40iscompatiblewithWindows7
andtheset‐upinstructionsandthesameasthoseofWindowsVista
showninthemanual.

Q18:IwouldliketorecordLPstoharddrive.Isitnecessarytoinstalladriver?
A18‐1.Installationofadriverisnotnecessary.Howeverrecordingsoftwareisnecessary.
softwareAudacity:
http://audacity.sourceforge.net/
A18‐2.Importantnotewhenrecording:ChecktoseeifbothInputandOutputsettingsintheSoundorMIDI
applicationarenotsetto24bit/96KHz.
TheTENORchipusedintheGT40hasabandwidthlimitationof12Mbps(USB2.0fullspeedoperation),and
duetothislimitation
onlyoneI2Sinputoroutputcanbesetfor24bit/96KHzapplicationatonetime.
Therefore,underthiscondition,forsimultaneousmultiple‐channelapplicationsotherI2Sinterfacesmust
beconfiguredat16‐bit/48KHzor16‐bit/96KHz.Inotherwords,whenrecordingitisnecessarytosetthe
audioInputonthe
computerto24bit/96KHz(PC‐Soundapplication;MAC‐MIDIapplication),butdonotset
nottheaudioOutputto24bit/96KHz.TheOutputshouldbesettoalower16bitresolutionuntilrecording
isdone.Thenwhenyouwanttoplaybackyour24bit/96KHzfilesthroughtheGT40youneedtoresetthe
outputto24bit/96KHzandresettheinputtoa16bitresolution.

Q19:WhywilltheGT40onlyworkwithanAC9V500mAadaptor? Whywon’tanAC9V2000mAadaptorwork?
A19‐1.Pleasecheckthe“NoLoad”outputACvoltageoftheAC9V2000mAadapter.The“NoLoad”voltageof
an
AC9V500mAadaptorisunderAC11V(necessary)andthismustbethesameforanAC9V2000mAadapter.Ifthe“No
Load”voltageisgreaterthanAC12VthentheIC4LM7806andIC8LM7906mayoverheat.