2A3WI-TP211Audio DAC Amp

FCCWarningStatement:Changesormodificationstothisunitnotexpressly approvedbythepartyresponsibleforcompliancecouldvoidtheuser’s authoritytooperatetheequipment.Thisequipmenthasbeentestedandfound tocomplywiththelimitsforaClassBdigitaldevice,pursuanttoPart15ofthe FCCRules.Theselimitsaredesignedtoprovidereasonableprotectionagainst harmfulinterferenceinaresidentialinstallation.Thisequipmentgenerates, usesandcanradiateradiofrequencyenergyand,ifnotinstalledandusedin accordancewiththeinstructions,maycauseharmfulinterferencetoradio communications.However,thereisnoguaranteethatinterferencewillnot occurinaparticularinstallation.Ifthisequipmentdoescauseharmful interferencetoradioortelevisionreception,whichcanbedeterminedby turningtheequipmentoffandon,theuserisencouragedtotrytocorrectthe interferencebyoneormoreofthefollowingmeasures: -Reorientorrelocatethereceivingantenna. -Increasetheseparationbetweentheequipmentandreceiver. - Connecttheequipmentintoanoutletonacircuitdifferentfromthatto whichthereceiverisconnected. -Consultthedealeroranexperiencedradio/TVtechnicianforhelp. ThisdevicecomplieswithPart15oftheFCCRules.Operationissubjecttothe followingtwoconditions:(1)thisdevicemaynotcauseharmfulinterference, and(2)thisdevicemustacceptanyinterferencereceived,including interferencethatmaycauseundesiredoperation. FCCRadiationExposureStatement Theantennasusedforthistransmittermustbeinstalledtoprovideaseparation distanceofatleast20cmfromallpersonsandmustnotbeco ‐ locatedfor operatinginconjunctionwithanyotherantennaortransmitter.

GuangzhouTOPPINGTechnologyCo.,Ltd 2.911(d)(5)(i)EquipmentTypeAttestationv1.2 Section2.911(d)(5)(i)Certification–EquipmentType Companyname:GuangzhouTOPPINGTechnologyCo.,Ltd Address:Room201,26thJiaomenRoad,Huangge,Nansha,GuangzhouChina ProductName:AudioDACAmp FCCID:2A3WI-TP211 Model(s):TP211,TP211A,TP211B,TP211C,TP211D,DX9 2.911(d)(5)(i)EquipmentType We,GuangzhouTOPPINGTechnologyCo.,Ltd(“theapplicant”)certifythattheequipmentforwhich authorizationissoughtthroughcertificationisnot:  Prohibitedfromreceivinganequipmentauthorizationpursuantto§2.903;oftheFCCrules.  Identifiedasanequipmenttypeinthe“CoveredList” NOTE1 Yourssincerely, Name:lvlinDate:2023.09.27 TitleandCompanyname:N/A/GuangzhouTOPPINGTechnologyCo.,Ltd NOTE1 “CoveredList”;istheListofEquipmentandServicesCoveredBySection2ofTheSecureNetworksAct,availableat https://www.fcc.gov/supplychain/coveredlist References; 1)986446D01CoveredEquipmentv01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2)FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

GuangzhouTOPPINGTechnologyCo.,Ltd 2.911(d)(5)(ii)ApplicantAttestationv1.3 Section2.911(d)(5)(ii)Certification–Applicant(CoveredList) Companyname:GuangzhouTOPPINGTechnologyCo.,Ltd Address:Room201,26thJiaomenRoad,Huangge,Nansha,GuangzhouChina ProductName:AudioDACAmp FCCID:2A3WI-TP211 Model(s):TP211,TP211A,TP211B,TP211C,TP211D,DX9 2.911(d)(5)(ii)Applicantfiling We,GuangzhouTOPPINGTechnologyCo.,Ltd(“theapplicant”)certifythat,asofthedateofthe filingoftheapplication,theapplicantisnotidentified NOTE1 onthe“CoveredList” NOTE2 ,established pursuantto§1.50002ofthischapter,asanentityproducingcoveredcommunicationsequipment. Yourssincerely, Name:lvlinDate:2023.09.27 TitleandCompanyname:N/A/GuangzhouTOPPINGTechnologyCo.,Ltd NOTE1 Deleteoptionnotapplicabletothisapplication. NOTE2 “CoveredList”;istheListofEquipmentandServicesCoveredBySection2ofTheSecureNetworksAct,availableat https://www.fcc.gov/supplychain/coveredlist References; 1)986446D01CoveredEquipmentv01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2)FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

GuangzhouTOPPINGTechnologyCo.,Ltd AgentAuthorization Company:GuangzhouTOPPINGTechnologyCo.,Ltd Address:Room201,26thJiaomenRoad,Huangge,Nansha,GuangzhouChina ProductName:AudioDACAmp ModelNumber(s):TP211,TP211A,TP211B,TP211C,TP211D,DX9 ProductDescription:AudioDACAmp WeauthorizeMiCOMLabsInc.,575BoulderCourt,Pleasanton,California94566,USA, toactonourbehalfonallmattersconcerningthecertificationofabovenamed equipment. WedeclarethatMiCOMLabsInc.isallowedtoforwardallinformationrelatedtothe approvalandcertificationofequipmenttotheregulatoryagenciesasrequiredandto discussanyissuesconcerningtheapprovalapplication.Anyandallactscarriedoutby MiCOMLabsonourbehalfshallhavethesameeffectasactsofourown. Signature:Date:2023.09.27 Name:lvlin Title:N/A Company:GuangzhouTOPPINGTechnologyCo.,Ltd

GuangzhouTOPPINGTechnologyCo.,Ltd ModelDifference Productdescription: AudioDACAmp Modelname:TP211 TP211A,TP211B,TP211C,TP211D,DX9 TradeName:TOPPING AllthemodelarethesamecircuitandRFmodule,onlythemodelnameisdifferent. Regards Sincerely Client’ssignature: Client’sname/title:lvlin/N/A Contactinformation/address:13076957685/Room201,26thJiaomenRoad, Huangge,Nansha,GuangzhouChina

GuangzhouTOPPINGTechnologyCo.,Ltd OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:2023.09.27 Subject;RequestforConfidentiality FCCID:2A3WI-TP211 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthesedocuments mightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:lvlin Title:N/A

EUTPHOTO(ExternalPhotos) TestMode:TP211 ※※※※※ENDOFREPORT※※※※※ BTANT

Labelandlabellocation High:1cm Wide:2cm AudioDACAmp FCCID:2A3WI-TP211

EUT PHOTO(Internal Photos) Test Mode: TP211 ※※※※※END OF REPORT※※※※※

FCCID:2A3WI-TP211 RFExposureEvaluation Limits Thecriterialistedinthefollowingtableshallbeusedtoevaluatetheenvironmentimpactofhumanexposure toradiofrequency(RF)radiationasspecifiedin1.1307(b) LimitsforMaximumPermissibleExposure(MPE) Frequencyrange (MHz) Electricfield strength (V/m) Magneticfieldstrength (A/m) Powerdensity (mW/cm 2 ) Averagingtime (minutes) (A)LimitsforOccupational/ControlledExposures 0.3–3.06141.63*(100)6 3.0–301842/f4.89/f*(900/f 2 )6 30–30061.40.1631.06 300–1500f/3006 1500–100,00056 (B)LimitsforGeneralPopulation/UncontrolledExposure 0.3–1.346141.63*(100)30 1.34–30824/f2.19/f*(180/f 2 )30 30–30027.50.0730.230 300–1500f/150030 1500–100,0001.030 f=frequencyinMHz Friistransmissionformula:Pd=(Pout*G)/(4*pi*r 2 ) Where Pd=powerdensityinmW/cm 2 ,Pout=outputpowertoantennainmW; G=gainofantennainlinearscale,Pi=3.1416; R=distancebetweenobservationpointandcenteroftheradiatorincm PdidthelimitofMPE,1mW/cm 2 .Ifweknowthemaximumgainoftheantennaandthetotalpowerinputto theantenna,throughthecalculation,wewillknowthedistancerwheretheMPElimitisreached. TestProcedure SoftwareprovidedbyclientenabledtheEUTtotransmitandreceivedataatlowest,middleandhighest channelindividually. TestResultofRFExposureEvaluation BTmode Mode Outputpowerto antenna(dBm) Outputpowerto antenna(mW) AntennaGain (dBi) PowerDensityat R=20cm(mW/cm 2 ) Limit (mW/cm 2 ) Result GFSK1.463 1.402.360.000480 1.0PASS π/4-DQPSK4.050 2.542.360.000870 1.0PASS 8-DPSK4.976 3.142.360.001076 1.0PASS

承 认 书 SPECIFICATION FOR APPROVAL 客 户 名 称 CUSTOMER NAME: 产 品 名 称 PRODUCT NAME: 2.4G ANTRP-SMA 客 户 料 号 CUSTOMER P/N: 电子料号 P/N: REV: A MANUFACTURER SIGNATURE CUSTOMER SIGNATURE CHECKED BY: AUDITOR BY: APPROVED BY: DATE: 2016-07-06 Contents ltem Description 一、-----------------------------------------------------------规格表 二、 ----------------------------------------------------------成品图 三、 ---------------------------------------------------------测试报告 一、规格表: 产品主要技术参数 主要技术指标 Main technical specifications 频率范围 （MHZ） 2400-2500 Frequency Range (MHZ) 2400-2500 特性阻抗(Ω) 50 Impedance(Ω) 50 增益(dBi) 2.36 Gain(dBi) 2.36 输出电压 驻波比 ≦1.92 VSWR ≦1.92 最大功率 10W Admitted Power 10W 极化方式 垂直极化 Polarization Linear,Vertical 方向性 全向性 Radiation Omni-directional 连接方式 RP-SMA Connector Type RP-SMA 物理性能 Physical Properties 天线外套材料 TPEE Antenna cover TPEE 工作温度 -20°C~+70°C Operating Temp -20°C~+70°C 保存温度 -20°C~+70°C Storage Temp -20°C~+70°C 二、成品图： 三、测试报告 3.1：网络分析仪测试报告 3.2：暗室2D、3DRaditation Pattern 2.4GHz Gain:2.11 dBi Efficiency:75.6 1% 2.45GHz Gain: 2.23dBi Efficiency: 78.45% 2.5GHz Gain: 2.36dBi Efficiency: 79.32%

Project No.: ZKT-2309076985E Page 1 of 71 FCC TEST REPORT FCC ID:2A3WI-TP211 Report Number. .................................... :ZKT-2309076985E Date of Test ...................................................... : Sep. 11, 2023 to Sep. 18, 2023 Date of issue.........................................: Sep. 18, 2023 Total number of pages.........................71 Test Result .......................................... : PASS Testing Laboratory...........................: Shenzhen ZKT Technology Co., Ltd. Address ............................................... : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Applicant's name ............................. : Guangzhou TOPPING Technology Co., Ltd Address...............................................: Rm201, 26th Jiaomen Rd, Huangge, Nansha, Guangzhou, China. Manufacturer's name......................: Guangzhou TOPPING Technology Co., Ltd Address...............................................: Rm201, 26th Jiaomen Rd, Huangge, Nansha, Guangzhou, China. Test specification: Standard ................................................ : FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10:2013 Test procedure ..................................... : / Non-standard test method................:N/A Test Report Form No........................: / Test Report Form(s) Originator ..... : ZKT Testing Master TRF ........................................ : Dated: 2020-01-06 This device described above has been tested by ZKT, and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And itis applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of ZKT, this document may be altered or revised by ZKT, personal only, and shall be noted in the revision of the document. Product name ..................................... :Audio DAC Amp Trademark...........................................:TOPPING Model/Type reference.........................: TP211 TP211A, TP211B, TP211C, TP211D, DX9 Ratings..................................................: Input: AC 100-240V, 50/60Hz, 1.55A Project No.: ZKT-2309076985E Page 2 of 71 Testing procedure and testing location: Testing Laboratory ....................................... : Shenzhen ZKT Technology Co., Ltd. Address............................................................:1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Jim Liu Tested by (name + signature) ....................... : Jackson Fang Reviewer (name + signature) ....................... : Lake Xie Approved (name + signature).......................: Project No.: ZKT-2309076985E Page 3 of 71 Table of Contents Page 1. VERSION..............................................................................................................5 2. TEST SUMMARY..................................................................................................6 2.1 TEST FACILITY...................................................................................................7 2.2 MEASUREMENT UNCERTAINTY...................................................................... 7 3.1 GENERAL DESCRIPTION OF EUT....................................................................8 3.2 Test Setup Configuration.....................................................................................9 3.3 Support Equipment..............................................................................................9 4. EMC EMISSION TEST........................................................................................13 4.1 Conducted emissions........................................................................................13 4.1.1 POWER LINE CONDUCTED EMISSION Limits............................................13 4.1.2 TEST PROCEDURE...................................................................................... 13 4.1.3 DEVIATION FROM TEST STANDARD..........................................................13 4.1.4 TEST SETUP................................................................................................. 13 4.1.5 EUT OPERATING CONDITIONS...................................................................14 4.1.6 Test Result..................................................................................................... 15 4.2 Radiated emissions...........................................................................................17 4.2.1 Radiated Emission Limits............................................................................... 17 4.2.2 TEST PROCEDURE...................................................................................... 17 4.2.3 DEVIATION FROM TEST STANDARD..........................................................18 4.2.4 TEST SETUP................................................................................................. 18 4.2.5 EUT OPERATING CONDITIONS...................................................................19 4.2.6 TEST RESULTS.............................................................................................19 5. RADIATED BAND EMISSION MEASUREMENT...............................................28 5.1 Test Requirement:.............................................................................................28 5.2 TEST PROCEDURE......................................................................................... 28 5.3 DEVIATION FROM TEST STANDARD.............................................................29 5.4 TEST SETUP.................................................................................................... 29 5.5 EUT OPERATING CONDITIONS......................................................................29 5.6 TEST RESULT..................................................................................…

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EUTTESTPHOTO TestMode:TP211