2BDXM-TP249Audio DAC

ToppingTechnologyCo,Ltd Rooms903-905,7CuiyuSt,Nansha,GuangzhouCityChina AttestationStatements NotCoveredEntityApplicant&NotCoveredEquipment To:FederalCommunicationsCommissionDate:Nov.14,25 7435OaklandMillsRoad, Columbia,MD21046,USA Ref:InformationRequiredbySection2.911(d)(5)(i)&(ii) FCCID: 2BDXM-TP249 ToppingTechnologyCo,Ltd(“theapplicant”)certifiesthat,asofthedateofthefilingoftheapplication, theapplicantisnotidentifiedontheCoveredList,establishedpursuantto§1.50002ofreference chapter,asanentityproducing“covered”communicationequipment.Theequipmentforwhich authorizationissoughtisnot“covered”telecommunicationsequipmentandvideosurveillance equipmentproducedbyentitiesidentifiedontheCommission’sCoveredListthatprohibitedfrom receivinganequipmentauthorizationpursuanttosection§2.903oftheFCCrules. Sincerelyyours, ApplicantSignature PrintedName:Lvlin Title:Manager Address:Rooms903-905,7CuiyuSt,Nansha,GuangzhouCityChina Tel.:13076957685 Email:[email protected]

ToppingTechnologyCo,Ltd Rooms903-905,7CuiyuSt,Nansha,GuangzhouCityChina 1|Page AttestationStatements To:FederalCommunicationsCommissionDate:Nov.14,25 7435OaklandMillsRoad, Columbia,MD21046,USA Subject:AttestationofCompliancewithFCCCoveredListSoftwareRequirements FCCID:2BDXM-TP249 ProductName:AudioDAC Thisletterservesasanattestationthattheequipmentidentifiedabove☐is/☒isnot(selectone)"covered" softwareasdefinedundertheFederalCommunicationsCommission(FCC)CoveredListrequirements,as outlinedinFCC22-84andKDB986446. Specifically,theundersignedcertifiesthattheequipmentforwhichauthorizationissought: 1.Doesnotcontaincybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab, Inc.oranyofitssuccessors,assignees,parents,subsidiaries,affiliates,oranyentitythathasrebranded orrelabeledsoftwareproducedbytheaforementionedentities. 2.Doesnothavethecapabilitytostore,run,ordeliveranysoftwareidentifiedontheFCCCoveredList, includingbutnotlimitedtocybersecurityandanti-virussoftware. Tosupportthisattestation,theappendixevaluationdocumentationhasbeenpreparedandisincludedinthe certificationfiling. Thisattestationisbasedonathoroughevaluationofthedevice'sdesign,functionality,andsoftware environment.Theundersignedaffirmsthattheinformationprovidedisaccurateandcompletetothebestof theirknowledge. Sincerelyyours, ApplicantSignature PrintedName:Lvlin Title:Manager Address:Rooms903-905,7CuiyuSt,Nansha,GuangzhouCityChina Tel.:13076957685 Email:[email protected] ToppingTechnologyCo,Ltd Rooms903-905,7CuiyuSt,Nansha,GuangzhouCityChina 2|Page EvaluationregardingtotheCoveredListSoftware: Compliance Methodology EvaluationProcessResults Deviceis Inherent compliance ☒ TheChipset(s)usedislimitedtorun theCybersecurityoranti-virus software. Compliance ☒ TheMemoryusedislimitedtorunthe Cybersecurityoranti-virussoftware. Compliance ☒ Thereisstoragecapacitylimitationfor storeorinstalltheCybersecurityor anti-virussoftware. Compliance ☒ Operatingsystemusedislimitedto run,installordelivertheCybersecurity oranti-virussoftware. Compliance Deviceisnot Inherent compliance ☐ EvaluationBasedonSoftware BillofMaterials(SBoM) Seeattached“SBoM“ Note:TheSBoMcontentislimited tothescopeofcoveredlist software(e.g.antivirusand cybersecuritysoftware). ☐ EvaluationBasedonScanfor Softwareonthedevice ☐ EvaluationBasedonFilesystemscan ☐ EvaluationBasedonRunning softwarecheck

ToppingTechnologyCo,Ltd Rooms903-905,7CuiyuSt,Nansha,GuangzhouCityChina U.S.AgentLetterofAttestation To:FederalCommunicationsCommission 7435OaklandMillsRoad,Columbia,MD21046,USA Date:2025.11.14 Ref:AttestationStatement–Part2.911(d)(7)filing FCCID:2BDXM-TP249 ToppingTechnologyCo,Ltd(“theapplicant”)certifiesthat,asofthedateofthefilingofthe application,GOLDENVICTORYINTERNATIONALTRADINGCOLTD(“theagent”)isour designatedU.S.agentforserviceofprocessfortheabovereferenceFCCID.Theapplicantaccepts tomaintainanagentforserviceofprocessintheUnitedStatesfornolessthanoneyearaftereither thegranteehaspermanentlyterminatedallmarketingandimportationoftheapplicableequipment withintheU.S.,ortheconclusionofanyCommission-relatedadministrativeorjudicialproceeding involvingtheequipment,whicheverislater.Theapplicantfurtheracknowledgesitisour responsibilitytoinformtheFCCwhenevertheagentinformationchanges. GOLDENVICTORYINTERNATIONALTRADINGCOLTD("theagent)understanditistheagent's obligationtoacceptserviceofprocessintheUnitedStatesformattersrelatedtotheapplicable equipment,andatthephysicalU.S.addressandemailaddress. DesignatedU.S.Agent CompanyName:GOLDENVICTORYINTERNATIONALTRADINGCOLTD FRN:0036377570 Address:11016THSTREETSUITE1400DENVER, CO80202UnitedStates Signature: ContactPerson:LeonHowar Tel:(337)255-0461Email: [email protected] Applicant CompanyName:ToppingTechnologyCo,Ltd FRN:0034578757 Address:Rooms903-905,7CuiyuSt,Nansha,Guangzhou CityChina Signature: ContactPerson:Lvlin Tel:13076957685Email:[email protected]

ToppingTechnologyCo,Ltd Rooms903-905,7CuiyuSt,Nansha,GuangzhouCityChina 2025.11.14 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestfor:FCCID: 2BDXM-TP249 PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestpermanent confidentialtreatmentoftheexhibitsaccompanyingthiscertificationapplicationasoutlinedbelow:  BlockDiagram Schematics OperationalDescription Theaboveexhibitscontaintradesecretsand/orproprietaryinformationthatarenotpubliclyavailableand materialsthattheApplicanthasspentconsiderableeffortsindeveloping.Publicdisclosureofthesemay beharmfultotheApplicantandgiveanunfairadvantagetocompetitorsonthemarket. PursuanttoDA04-1705,theapplicantalsorequeststemporaryconfidentialtreatmentoftheexhibits outlinedbelowforaperiodof(upto180)daysfromthedateofequipmentauthorizationandpriorto marketingintheUnitedStatestopreventtheprematurereleaseofanysensitiveinformation.Applicantis awareoftheirresponsibilitytonotifyDERYCOMintheeventinformationregardingtheproductorthe productismadeavailabletothepublicbeforetherequestedperiodhasexpired.  UserManual  InternalPhotos  ExternalPhotos TestSetupPhotos Sincerely, (Signature) Title:Manager Address:Rooms903-905,7CuiyuSt,Nansha,GuangzhouCityChina Tel.:13076957685 Email:[email protected]

ToppingTechnologyCo,Ltd Rooms903-905,7CuiyuSt,Nansha,GuangzhouCityChina 2025.11.14 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorizationforFCCID: 2BDXM-TP249 I,theundersigned,herebyauthorizeShenzhenDLTestingTechnologyCo.,Ltdtoactonourbehalfinall mattersrelatingtothisapplicationforequipmentcertification. AnyactcarriedoutbyShenzhenDLTestingTechnologyCo.,Ltdshallhavethesameeffectasourown andIacknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsofcertification,as specifiedbyDERYCOMCERTIFICATIONSERVICES,INC.,stillresideswithToppingTechnologyCo, Ltd WecertifythatwearenotsubjecttoadenialoffederalbenefitsthatincludesFCCbenefitspursuantto Section5301oftheAnti-DrugAbuseActof1988,21U.S.C.§862,andthatnopartytotheapplication,as definedin47CFR§1.2002(b),issubjecttoadenialoffederalbenefitsthatincludesFCCbenefits pursuanttothatsection. Sincerely, (Signature) (FullnameofcontactpersonlistedonFCC’swebsite)Lvlin (Title)Manager Tel:13076957685 Fax:N/A Email:[email protected]

TOPPINGTechnologyCo.,Ltd ProductSimilarityDeclaration Productname:AudioDAC Modelname:TP249 TP249A,TP249B,TP249C,TP249D,E50II FCCID:2BDXM-TP249 We(TOPPINGTechnologyCo.,Ltd)herebystatethatallthemodelsare electricalidenticalincludingthesamesoftwareparameterandhardware design(i.e.,circuitdesign,PCBLayout,RFmodule/circuit,antennatype(s) andantennalocation,componentsonPCB,etc.,),samemechanical structureanddesign(includingcolor,materials,etc.,),Onlyfordifferent modelname Signature: Name:Lvlin Title:Manager Place,date:Rooms903-905,7CuiyuSt,Nansha,GuangzhouCity China/2025.11.14

Labelandlabellocation 3.5cm AudioDAC FCCID:2BDXM-TP249 1.5cm

FCCID:2BDXM-TP249 AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1091 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 ForEDR Mode Output powerto antenna (dBm) TuneUP tolerance (dBm) MaxTune UPpower (dBm) MaxTune UPpower (mW) Power Densityat R=20cm (mW/cm2) Limit (mW/cm2) Result GFSK3.679 3±1 4 2.510.0008601.0PASS π/4-DQPSK4.199 4±1 53.160.0010821.0PASS 8-DPSK4.0254±153.160.0010821.0PASS Antennagainfor:EDR:2.36dBi Note: Thesameantennacannottransmitatthesametime. SoaSARtestisnotrequired

承 认 书 SPECIFICATION FOR APPROVAL 客 户 名 称 CUSTOMER NAME: 产 品 名 称 PRODUCT NAME: 2.4G -2dBi 小SMA铜头公针黑色天线 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±0.5 Gain(dBi) 2±0.5 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 SMA Connector Type 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%

C DL-Cert ert DL-Cert DL D L-Cert DL-Cert DL-Cer D L-Cert DL-Cert DL-Cert Cert D L-Cert DL-Cert DL-Cert DL-C DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert ert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert D DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Ce DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL- DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert ert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-C DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert ert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Ce L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert D DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-C L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert rt DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Ce DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-C L-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert rt DL-Cert DL-Cert DL-Cert D L-Cert DL-Ce DL-Cert DL-Cert DL-Cert D L-Cert DL Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert D L-C L-Cert DL-Cert rt DL-Cer DL Shenzhen DL Testing Technology Co., Ltd.Report No.:DLE-251114001R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email:[email protected] 1 of 69 FCC TEST REPORT FCC ID:2BDXM-TP249 Applicant:TOPPING Technology Co., Ltd Address:Rooms 903-905, 7 Cuiyu St, Nansha, Guangzhou. Manufacturer:TOPPING Technology Co., Ltd Address:Rooms 903-905, 7 Cuiyu St, Nansha, Guangzhou. EUT:Audio DAC Trade Mark:TOPPING Model Number: TP249 TP249A, TP249B, TP249C, TP249D, E50 II Date of Receipt:Nov. 05, 2025 Test Date:Nov. 05, 2025 - Nov. 11, 2025 Date of Report:Nov. 14, 2025 Prepared By:Shenzhen DL Testing Technology Co., Ltd. Address: 101-201, Comprehensive Building, Tongzhou Electronics Longgang Factory Area, No.1 Baolong Fifth Road, Baolong Community, Baolong Street, Longgang District, Shenzhen, China Applicable Standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10:2020 Test Result:Pass Report Number:DLE-251114001R Prepared (Test Engineer): Dimon Tan Reviewer (Supervisor): Jack Bu Approved (Manager): Jade Yang This test report is based on a single evaluation of one sample of above mentioned products. It is not permitted to be duplicated in extracts without written approval of Shenzhen DL Testing Technology Co., Ltd. C DL-Cert ert DL-Cert DL D L-Cert DL-Cert DL-Cer D L-Cert DL-Cert DL-Cert Cert D L-Cert DL-Cert DL-Cert DL-C DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert ert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert D DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Ce DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL- DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert ert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-C DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert ert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Ce L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert D DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-C L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert rt DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Ce DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-C L-Cert DL-Cert DL-Cert DL-Cert D L-Cert DL-Cert rt DL-Cert DL-Cert DL-Cert D L-Cert DL-Ce DL-Cert DL-Cert DL-Cert D L-Cert DL Cert DL-Cert DL-Cert D L-Cert DL-Cert DL-Cert D L-C L-Cert DL-Cert rt DL-Cer DL Shenzhen DL Testing Technology Co., Ltd.Report No.:DLE-251114001R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email:[email protected] 2 of 69 Table of Contents Page 1. VERSION..................................................................................................................................4 2. TEST SUMMARY...................................................................................................................5 2.1 TEST FACILITY.........................................................................................................................6 2.2 MEASUREMENT UNCERTAINTY......................................................................................6 3.1 GENERAL DESCRIPTION OF EUT...................................................................................7 3.2 Test Setup Configuration........................................................................................................9 3.3 Support Equipment...................................................................................................................9 4. EMC EMISSION TEST....................................................................................…

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