HOMEASY M3F User manual

M3F 4-CHANNEL HEADPHONE AMP.

September.2nd,2014

Proudl

Presentedb

AC‐AUDIO®

User Manual

DETAILED SAFETY INSTRUCTIONS:

Allsafetyandoperationinstructionsofthismanualshouldbereadandadheredtobefore

operation.

RETAIN INSTRUCTIONS:

Pleaseretainallsafetyandoperatinginstructionsforfuturereference.

FOLLOW INSTRUCTIONS:

Alloperationanduserinstructionsshouldbefollowed.

WATER, LIQUID & MOISTURE:

Theapplianceshouldnotbeusednearwater,rainorotherliquids.Makesurethatnoliquidcan

leak,spillorotherwiseseepintotheappliance.

VENTILATION:

Pleaseplacetheappliancesonoobstaclesinterfereorimpedetheflowofairthroughthe

ventilationopenings.

HEAT:

Theapplianceshouldbesituatedawayfromotherheatsourcessuchasheaters,radiators,ovens,

orotherappliancesthatproduceheat.

POWER SOURCE:

Makesureyourapplianceissettothecorrectvoltageforthecountryinwhichitwillbeuse

beforeswitchingthedeviceON.

GROUNDING & POLARIZATION:

Precautionsshouldbetakensothatthegroundingorpolarizationmeansofanapplianceisnot

defeated.

POWER-CORD PROTECTION:

Powersupplycordsshouldberoutedsothattheyarenotlikelytobewalkedon,pinched,

damaged,worn,orrubbedbyanyotherdeviceorobstacle.

WARNING

Toreducetheriskoffireorelectricalshock,donotexposethisappliancetorainor

moisture.Toreducetheriskofelectricalshock,donotremovethecoverorrear

panelofthisunit.Nouserserviceablepartsinside.Pleasereferservicingto

qualifiedpersonnelonly.

CLEANING:

Theapplianceshouldbecleanedonlywithalightsoftcloth.Donotuseanydamagingor

corrosiveproductsontheunit.

PERIODS OF INACTIVITY:

Thepowercordoftheapplianceshouldbeunpluggedfromtheoutletwhenleftun‐usedfora

longperiodoftimeorincasealightningstormoccurs.

DAMAGE REQUIRING SERVICE:

Theapplianceshouldbeservicedbyqualifiedservicepersonnelwhen:

•Thepowersupplycordortheplughasbeendamaged;ortherisingthequality.

•Objectshavefallen,orliquidhasbeenspilledintotheappliance;or

•Theappliancehasbeenexposedtorain;or

•Theappliancedoesnotappeartooperatenormallyorexhibitsamarkedchange

inperformance;or

•Theappliancehasbeendropped,ortheenclosuredamaged.

SERVICING:

TheusershouldnotattempttoservicetheappliancebeyondthatisdescribedintheOperating

Instructions.

INSTALLATION

EveryHOMEASYgearwascarefullypackedinthefactoryandthepackagingwasdesignedto

protecttheunitfromroughhandling.Nevertheless,werecommendthatyoucarefullyexamine

thepackaginganditscontentsforanysignsofphysicaldamage,whichmayhaveoccurredin

transit.

Iftheunitisdamaged,pleasedonotreturnittous,butnotifyyourdealerandtheshipping

companyimmediately,otherwiseclaimsfordamageorreplacementmaynotbegranted.

Shippingclaimsmustbemadebytheconsignee.

CAUTION

Theunitscomewitha15VACpowersupplyadaptor.Beforeyou

connectyourunittothemains,pleasemakesurethatyourlocal

voltagematchesthevoltagerequiredbytheunit!

HOMEASY M3F 4-Channel Headphone Amplifier

Main Description

Ifyouarenotaprofessionalmusicman,oryoudon’twishtohaveafullrackgeartousein

theproaudiocabinet,HOMEASYM3Fwouldbeyourbestchoiceindeed,asitisatruedesktop

proaudiogear.Althoughsmallerandcheaperthantheotherstandardphoneampfrom

AC‐AUDIO,suchasH1004,H1008andHA8M,M3Fwouldbeamostsuitableampfor

quasi‐professionalandconsumerusersatlimitedcost,whichiscompletelyabletoprovidepure

amplifyingperformance.

M3Fprovideswonderfulphonesignal’sdistributionandamplifyingforeveryindividualstereo

channel.Thecompletelymetalliccoverandpanelsgivewonderfulperformanceagainstexternal

interference.Furthermore,M3FadoptsNE5532high‐classtransistoroperationalamplifier

module,whichhashighercapabilitythan4558toacquiremorepure,clearamplifying.

Inoneword,HOMEASYM3Fwouldbeyourmostcost‐effectivechoiceforphoneampgearat

thispricinglevel.

Product Features

● 4‐ChannelHigh‐QualityIndividualAmplifier

● IndependentL/RBalancedInputof1/4 ” TRS

● Professional4‐ChannelIndividualStereoOutputofTRS

● AdvancedIndependentExternalPowerAdapter

● CompletelyMetallicCoverandPanelagainstExternalInterference

● Low‐NoiseCircuitDesigntoAcquireHigherS/NRatioandreducetheClippingDistortion

Probability

● High‐ClassTransistorOperationalAmplifierModule

Specifications

MAININ:

HF‐filtered,servo‐balanced1/4 " TRSconnectors



InputImpedance:

48kOhmsbalanced



Max.Inputlevel:

16dBubalanced



CMRR:

Typically40dB,>55dB@1kHz



MAINOUT:

1/4 " TRSconnectors,balanced



PhonesOutput:

1/4 " TRSconnector(stereo),outputimpedance32Ohms.



Max.OutputPower:

+24dBu(loadimpedance100Ω)



FrequencyResponse:

10Hzto150kHz,+/‐3dB



Noise:

22Hzto22kHz>90dB@0dBu



Dynamicrange:

22Hzto22kHz:110dB



Distortion(THD):

0.006%typ.@+4dBu,1kHz,Gain1



PowerRequirements:

Externalpoweradapterprovided,230V50Hzor115V60Hzoptional.

50‐60Hzpowerconsumption8VA.



Dimensions(HxWxD):

WxHxD:206x45x125mm(8.11”x1.77”x4.92”)

Control Panel Instructions

1. The Headphone Output Connectors of Channel A/B/C/D

2. The Volume Control Knobs of Channel A/B/C/D

3. The Power Indicator Light

4. The AC Power Supply Connector

UnbalancedTRSoutputsofChannelA/B/C/Dtoconnectheadphones.

Everychannel’svolumeadjustmentisindividual.

Eachchannelfeaturesarotaryvolumecontrolforvariableadjustmentof

thedesiredoutputlevel.

Thepowerindicatorofon/off.

ThejacktoconnecttheACpoweradapterinthepackingbox.

5. The Balanced Input Connectors

How to use the HOMEASY M3F?

Connectastereo(L&R)programsource(2x1/4 ” InchJacks)totherearoftheM3Fusingoneof

theavailable2xstereoinputpairsontherearpanel.YoucanalsoconnectaMonosignaltothe

inputchannelandsplitthesignalintobothsidesoftheheadphone.



Connectasetofheadphonesusingastereo1/4 Inchcabletoanyoftheheadphoneoutputson

thefrontoftheM3F.Settoanappropriatelevelformonitoring.Owingtothefourindependent

channelsoftheM3F,fourindividualmixesforfourmusicianscanbeachievedwithasingleunit.



Intheapplicationofstudiorecording,youcanconfiguresub‐groups,auxsendsorsingleoutputs

ofyouraudiomixertofeedsignalindependentlytotheM3F.Thisenableseachmusicianto

receiveaspecificconfigurationofinstrumentsoftheirchoiceinthereheadphones.



Note:Iffourheadphoneoutputsarenotenough,youcaninterfaceandlinkanynumberofM3F’s

foradditionaloutputs.

ItisveryeasytochainmultipleM3F’stogether.Useappropriatestereo1/4 Inchjack>toY(2x

mono)cablesandmakeconnectionsfromoneoftheoutputstothestereo(L&R)audioinputson

therearofyoursecondM3F.Thiseffectivelyallowsanaddition3xheadphoneoutputs.Youcan

continuetochainasmanyunitsasyouwantusingthisprocedure.

BalancedTRSstereosignalinputstoconnecttoa

mixer,audiointerfaceetc.Ifyouliketolistentoa

monosignal,youshouldconnectittotheleft

inputjack.

Warranty

AC‐AUDIOwarrantsthemechanicalandelectroniccomponentsofthisproducttobefreeof

defectsinmaterialandworkmanshipforaperiodofoneyearfromtheoriginaldateofpurchase,

inaccordancewiththewarrantyregulationsdescribedbelow.Ifanydefectsoccurwithinthe

specifiedwarrantyperiodthatarenotcausedbynormalwearorinappropriateuse,AC‐AUDIO

shall,atitssolediscretion,eitherrepairorreplacetheproduct.

Warranty Regulations

1.Warrantyserviceswillbefurnishedonlyiftheproductisaccompaniedbyanoriginalretail

dealer‘sinvoice.AnyproductdeemedeligibleforrepairorreplacementbyAC‐AUDIOunderthe

termsofthiswarrantywillberepairedorreplacedinthebestpossiblemanner.



2.Iftheproductneedstobemodifiedoradaptedinordertocomplywithapplicabletechnicalor

safetystandardsonanationalorlocallevel,inanycountrywhichisnotthecountryforwhichthe

productwasoriginallydevelopedandmanufactured,thismodification/adaptationshallnotbe

consideredadefectinmaterialsorworkmanship.

Thewarrantydoesnotcoveranysuchmodification/adaptation,irrespectiveofwhetheritwas

carriedoutproperlyornot.Underthetermsofthiswarranty,AC‐AUDIOshallnotbeheld

responsibleforanycostresultingfromsuchamodification/adaptation.



3.Freeinspections,maintenance/repairworkandreplacementofpartsareexpresslyexcluded

fromthiswarranty,inparticularifcausedbyinappropriateuse.Likewise,thewarrantydoesnot

coverdefectsofexpendablepartscausedbynormalwearoftheproduct.Expendablepartsare

typicallypots,potentiometers,switchesandsimilarcomponents.



4.Damages/defectscausedbythefollowingconditionsarenotcoveredbythiswarranty:

●  Misuse,neglectorfailuretooperatetheunitincompliancewiththeinstructionsgiveninthe

userorservicemanuals.

●  Connectionoroperationoftheunitinanywaythatdoesnotcomplywiththetechnicalor

safetyregulationsapplicableinthecountrywheretheproductisused.

●  Damages/defectsthatarecausedbyanyotherconditionbeyondthecontrolofAC‐AUDIO.



5.Anyrepaircarriedoutbyunauthorizedpersonnelwillvoidthewarranty.



6.Productswhichdonotmeetthetermsofthiswarrantywillberepairedexclusivelyatthe

buyer‘sexpense.Anyrepairorreplacementshallbereferredtothelocaldealerordistributorof

AC‐AUDIO.



7.Thiswarrantydoesnotexcludeorlimitthebuyer‘sstatutoryrightsprovidedbynationallaw,in

particular,anysuchrightsagainstthesellerthatarisefromalegallyeffectivepurchasecontract.

Theinformationcontainedinthismanualissubjecttochangewithoutnotice.Nopartofthis

manualmaybereproducedortransmittedinanyformorbyanymeans,electronicormechanical,

includingphotocopyingandrecordingofanykind,foranypurpose,withouttheexpresswritten

permissionofAC‐AUDIO.

Alltheinstructions,descriptionsandtechnicalspecificationsaresubjecttochangewithout

priornotice.

HOMEASY M3F User manual

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