2BTQV-AK-3116Amplifier

AK-3116 With Bluetooth, OPTICAL & AUX & USB Card Slots 1234567 1. Bluetooth signal receiving antenna; 2. Usb flash drive jack; 3. Optical fiber signal input jack; 4. AUX audio jack input; 5. LINE Audio signal output jack； 6.Left and right speaker channel output; 7. 24V/DC Power input。 1 AK- 3116 HIGH FIDELITY DIGITAL AUDIO AMPLIFIER 1. Power switch; 2. Infrared signal receiving head; 3. Bluetooth signal /USB reading signal prompt light; 4. Power on indicator 5. Treble adjustment knob; 6. Fiber signal /AUX signal input indicator; 7. BASS control knob； 8. Input function selection ; 9. Volume adjustment knob; 10. 3.5mm stereo head input jack; 1 2 4 5 6789 10 3 13 AK-3116 2 AK- 3116 HIGH FIDELITY DIGITAL AUDIO AMPLIFIER 1、Standby and power switch button； 2、Volume increase or decrease function buttons； 3、In MP3 and Bluetooth mode, select the previous song/next song； 4、Bluetooth signal connection button； 5、Bluetooth signal segment open button； 6、Fiber signal function button； 7、Folder selection； 8、"Built-in player digital function keys: When playing MP3, you can directly press a number key to select the corres ponding song. Note: When selecting numbers 1-9, you need to wait for the displayed number to disappear before pressing other numbers, otherwise the pressed numbers will be accumulated."。 For example 1: If you press 5, it will display 5 and after it disappears, it will play the fifth song. If you continuously press multiple times, the numbers will accumulate and correspondingly play the corresponding song. For example 2: Pressing 1 first, and then pressing 2 will display 12, which means playing the twelfth song, and so on. 9、Translation: "When playing MP3 songs, switch between ONE single loop and ALL full disk loop."； 10、AUX signal switch button； 11、MP3 signal switch button； 12、Play/pause button； 13、MUTE switch 。 3 AK- 3116 HIGH FIDELITY DIGITAL AUDIO AMPLIFIER Warning: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -- Reorient or relocate the receiving antenna. -- Increase the separation between the equipment and receiver. -- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -- Consult the dealer or an experienced radio/TV technician for help. Warning: changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body.

JieyangRongchengDistrictBaitongElectronicsFactory IndustrialZone,XizhaiVillage,Xinan,RongchengDistrict,JieyangCity,China AttestationStatements NotCoveredEntityApplicant&NotCoveredEquipment To:FederalCommunicationsCommissionDate:Jan.6,26 7435OaklandMillsRoad, Columbia,MD21046,USA Ref:InformationRequiredbySection2.911(d)(5)(i)&(ii) FCCID:2BTQV-AK-3116 JieyangRongchengDistrictBaitongElectronicsFactory(“theapplicant”)certifiesthat,asofthe dateofthefilingoftheapplication,theapplicantisnotidentifiedontheCoveredList,established pursuantto§1.50002ofreferencechapter,asanentityproducing“covered”communicationequipment. Theequipmentforwhichauthorizationissoughtisnot“covered”telecommunicationsequipmentand videosurveillanceequipmentproducedbyentitiesidentifiedontheCommission’sCoveredListthat prohibitedfromreceivinganequipmentauthorizationpursuanttosection§2.903oftheFCCrules. Sincerelyyours, ApplicantSignature PrintedName:XiaokaiChen Title:Manager Address:IndustrialZone,XizhaiVillage,Xinan,RongchengDistrict,JieyangCity,China Tel.:13822282256 Email:[email protected]

JieyangRongchengDistrictBaitongElectronicsFactory IndustrialZone,XizhaiVillage,Xinan,RongchengDistrict,JieyangCity,China 1|Page AttestationStatements To:FederalCommunicationsCommissionDate:Jan.6,26 7435OaklandMillsRoad, Columbia,MD21046,USA Subject:AttestationofCompliancewithFCCCoveredListSoftwareRequirements FCCID:[2BTQV-AK-3116] ProductName:[Amplifier] 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:XiaokaiChen Title:Manager Address:IndustrialZone,XizhaiVillage,Xinan,RongchengDistrict,JieyangCity,China Tel.:13822282256 Email:[email protected] JieyangRongchengDistrictBaitongElectronicsFactory IndustrialZone,XizhaiVillage,Xinan,RongchengDistrict,JieyangCity,China 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) ☐ EvaluationBasedonScanfor Softwareonthedevice ☐ EvaluationBasedonFilesystemscan ☐ EvaluationBasedonRunning softwarecheck

JieyangRongchengDistrictBaitongElectronicsFactory IndustrialZone,XizhaiVillage,Xinan,RongchengDistrict,JieyangCity,China 1/6/2026 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestfor:FCCID:2BTQV-AK-3116 PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestpermanent confidentialtreatmentoftheexhibitsaccompanyingthiscertificationapplicationasoutlinedbelow:  BlockDiagram Schematics  OperationalDescription Theaboveexhibitscontaintradesecretsand/orproprietaryinformationthatarenotpubliclyavailableand materialsthattheApplicanthasspentconsiderableeffortsindeveloping.Publicdisclosureofthesemay beharmfultotheApplicantandgiveanunfairadvantagetocompetitorsonthemarket. Sincerely, (Signature) PrintedName:XiaokaiChen Title:Manager Address:IndustrialZone,XizhaiVillage,Xinan,RongchengDistrict,JieyangCity,China Tel.:13822282256 Email:[email protected]

JieyangRongchengDistrictBaitongElectronicsFactory IndustrialZone,XizhaiVillage,Xinan,RongchengDistrict,JieyangCity,China Date:Jan.6,26 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorizationforFCCID:2BTQV-AK-3116 I,theundersigned,herebyauthorize(CTSLTesting(Dongguan）Co.,Ltd.)toactonourbehalfinall mattersrelatingtothisapplicationforequipmentcertification. Anyactcarriedoutby(CTSLTesting(Dongguan）Co.,Ltd.)shallhavethesameeffectasourownandI acknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsofcertification,as specifiedbyDERYCOMCERTIFICATIONSERVICES,INC.,stillresideswith(JieyangRongcheng DistrictBaitongElectronicsFactory). WecertifythatwearenotsubjecttoadenialoffederalbenefitsthatincludesFCCbenefitspursuantto Section5301oftheAnti-DrugAbuseActof1988,21U.S.C.§862,andthatnopartytotheapplication,as definedin47CFR§1.2002(b),issubjecttoadenialoffederalbenefitsthatincludesFCCbenefits pursuanttothatsection. Sincerely, ApplicantSignature: PrintedName:XiaokaiChen Title:Manager Address:IndustrialZone,XizhaiVillage,Xinan,RongchengDistrict,JieyangCity,China Tel.:13822282256 Email:[email protected]

JieyangRongchengDistrictBaitongElectronicsFactory IndustrialZone,XizhaiVillage,Xinan,RongchengDistrict,JieyangCity,China ProductSimilarityDeclaration EUTDescription:Amplifier FCCID:2BTQV-AK-3116 ModelNo.:AK-3116,AK3116Pro,AK-35,AK-35Pro,AK-36, AK-38,AK-45,AK-45Pro,AK-50,AK-52,AK-55,AK-65,AK-75, AK-85,AK-95,AK-898,AK-998,AK-280,AK-370,AK-380, AK-390,AK-580,AK-590,ST-838,KS-33BT,KS-39BT,S-188Pro, S-288,S-299,S-388,S-399,S-588,S-599,BT-298A,BT-298Pro, BT-398A,BT-598A,AS-22,AS-33,ST-839,AK-280BT,SK-5,SK-6, SK-8,SK-9 We(JieyangRongchengDistrictBaitongElectronicsFactory) herebystatethatallthemodelsareelectricalidenticalincluding thesamesoftwareparameterandhardwaredesign(i.e.,circuit design,PCBLayout,RFmodule/circuit,antennatype(s)and antennalocation,componentsonPCB,etc.,),samemechanical structureanddesign(includingproductenclosure,materials,etc.,), onlythecolorandthemodelnumberaredifferent. Signature: Name:XiaokaiChen Title:Manager Place,date:December24,2025

Page1of4 CTSLTesting(Dongguan)Co.,Ltd. ReportNo.:CTSL2521220076ER AnnexA. EUTExternalPhotos FCCID:2BTQV-AK-3116 Room112,Building1,No.15,Jiaoyuansongshan,HetianVilltage,HoujieTown,DongguanCity,Guangdong,China. Tel:0769-86009597E-mail:[email protected]://www.ctsl-lab.com AnnexA. EUTExternalPhotos Photo1ExternalphotosofEUT Photo2ExternalphotosofEUT Page2of4 CTSLTesting(Dongguan)Co.,Ltd. ReportNo.:CTSL2521220076ER AnnexA. EUTExternalPhotos FCCID:2BTQV-AK-3116 Room112,Building1,No.15,Jiaoyuansongshan,HetianVilltage,HoujieTown,DongguanCity,Guangdong,China. Tel:0769-86009597E-mail:[email protected]://www.ctsl-lab.com Photo3ExternalphotosofEUT Photo4ExternalphotosofEUT Page3of4 CTSLTesting(Dongguan)Co.,Ltd. ReportNo.:CTSL2521220076ER AnnexA. EUTExternalPhotos FCCID:2BTQV-AK-3116 Room112,Building1,No.15,Jiaoyuansongshan,HetianVilltage,HoujieTown,DongguanCity,Guangdong,China. Tel:0769-86009597E-mail:[email protected]://www.ctsl-lab.com Photo5ExternalphotosofEUT Photo6ExternalphotosofEUT Page4of4 CTSLTesting(Dongguan)Co.,Ltd. ReportNo.:CTSL2521220076ER AnnexA. EUTExternalPhotos FCCID:2BTQV-AK-3116 Room112,Building1,No.15,Jiaoyuansongshan,HetianVilltage,HoujieTown,DongguanCity,Guangdong,China. Tel:0769-86009597E-mail:[email protected]://www.ctsl-lab.com Photo7ExternalphotosofEUT ------------------------------------------EndofEUTExternalPhotos------------------------------------------

LabelandLabelLocation FCCID:2BTQV-AK-3116 L*W:10mm*5mm labelandWhitefont

Page1of2 CTSLTesting(Dongguan)Co.,Ltd. ReportNo.:CTSL2521220076ER AnnexB. EUTInternalPhotos FCCID:2BTQV-AK-3116 Room112,Building1,No.15,Jiaoyuansongshan,HetianVilltage,HoujieTown,DongguanCity,Guangdong,China. Tel:0769-86009597E-mail:[email protected]://www.ctsl-lab.com AnnexB. EUTInternalPhotos Photo1InternalphotosofEUT Photo2InternalphotosofEUT Page2of2 CTSLTesting(Dongguan)Co.,Ltd. ReportNo.:CTSL2521220076ER AnnexB. EUTInternalPhotos FCCID:2BTQV-AK-3116 Room112,Building1,No.15,Jiaoyuansongshan,HetianVilltage,HoujieTown,DongguanCity,Guangdong,China. Tel:0769-86009597E-mail:[email protected]://www.ctsl-lab.com Photo3InternalphotosofEUT Photo4InternalphotosofEUT ------------------------------------------EndofEUTInternalPhotos------------------------------------------ Antennaposition

Page1of2 CTSLTesting(Dongguan)Co.,Ltd. ReportNo.:CTSL2521220076ER RFExposure Evaluation FCCID:2BTQV-AK-3116 Room112,Building1,No.15,Jiaoyuansongshan,HetianVilltage,HoujieTown,DongguanCity,Guangdong,China. Tel:0769-86009597E-mail:[email protected]://www.ctsl-lab.com RFExposureEvaluation EEUTDescription:Amplifier ModelNo.:AK-3116 FCCID:2BTQV-AK-3116 Equipmenttype:MobileDevice Testproceduresaccordingtothetechnicalstandards:KDB447498D01V06andFCC2.1091. Limits Thecriterialistedinthefollowingtableshallbeusedtoevaluatetheenvironmentimpactofhumanexposuretoradio frequency(RF)radiationasspecifiedin1.1307(b) LimitsforMaximumPermissibleExposure(MPE) F=frequencyinMHz Formula:Pd=(Pout*G)/(4* π *r2) Where: Pd=powerdensityinmW/cm2, Pout=outputpowertoantennainmW; G=gainofantennainlinearscale, π=3.14; R=distancebetweenobservationpointandcenteroftheradiatorincm PdidthelimitofMPE,1mW/cm2.Ifweknowthemaximumgainoftheantennaandthetotalpowerinputtothe antenna,throughthecalculation,wewillknowthedistancerwheretheMPElimitisreached. TestProcedure SoftwareprovidedbyclientenabledtheEUTtotransmitandreceivedataatlowest,middleandhighestchannel individually. Page2of2 CTSLTesting(Dongguan)Co.,Ltd. ReportNo.:CTSL2521220076ER RFExposure Evaluation FCCID:2BTQV-AK-3116 Room112,Building1,No.15,Jiaoyuansongshan,HetianVilltage,HoujieTown,DongguanCity,Guangdong,China. Tel:0769-86009597E-mail:[email protected]://www.ctsl-lab.com TestResultofRFExposureEvaluation BT Outputpower （ dBm ） Output power (mW) Antenna Gain(dBi) Power Density atR=20cm (mW/cm2) Limit (mW/cm2) Result 2402 6.164.130520.00131.0Pass 24416.084.055120.00131.0Pass 24805.853.845920.00121.0Pass Conclusion:NoSARisrequired --------------------------------------EndofRFExposureEvaluation--------------------------------------

Model No Specification LY-00047 Wifi Bluetooth Antenna ▪ Freq. : 2400~2500MHz ▪ S.W.R. : <= 2.0 ▪ Gain : 2 dBi ▪ Connector : SMA-Male Input Impedance(Ω) : 50Ω Maximuminputpower(W) : 2W HorizontalBeamwidth(°) :360° Vertical Beamwidth(0°): -30-70° Dimension Features ROHS Compliant Low VSWR / Low Loss Design / High Gain High Efficiency and Sensitivity Low Loss RF Coaxial Connector Cable Feed Matching Free Design Dongguan Lanyi Communication Technology Co., Ltd. A7/F, Hengguang Industrial Park, Dongsheng Road, Huangcaolang, Dalang Town,Dongguan City China H-Plane Radiation Pattern E-Plane Radiation Pattern 0 45 90 135 180 225 270 315 0 0 -10 -10 -20 -20 -30 -30 -40 -40 0 45 90 135 180 225 270 315 0 0 -10 -10 -20 -20 -30 -30 -40 -40 T: +86 13538661663

Page1of47 FCCPART15SUBPARTC FCCPART15.247 TESTREPORT FCCID:2BTQV-AK-3116 ReportNo:CTSL2521220076ER ProductName:Amplifier MainTestModel:AK-3116 SeriesModels: AK3116Pro,AK-35,AK-35Pro,AK-36,AK-38,AK-45, AK-45Pro,AK-50,AK-52,AK-55,AK-65,AK-75,AK-85,AK-95, AK-898,AK-998,AK-280,AK-370,AK-380,AK-390,AK-580, AK-590,ST-838,KS-33BT,KS-39BT,S-188Pro,S-288,S-299, S-388,S-399,S-588,S-599,BT-298A,BT-298Pro,BT-398A, BT-598A,AS-22,AS-33,ST-839,AK-280BT,SK-5,SK-6, SK-8,SK-9(Thedifferencesbetweenmodelsare limitedtothefronttrimpanel,housingcolor,knoband buttoncolors,speakercolor,andlightring configuration,Noimpactonelectricalperformance andRFcircuits) Applicant: JieyangRongchengDistrictBaitongElectronics Factory EXECUTIVESUMMARY AsampleofthisproductwastestedandfoundtobeincompliancewithFCCPART15C, FCCPART15SUBPARTC(15.247). Anyreproductionofthisdocumentmustbedoneinfull.Nosinglepartofthisdocument maybereproducedwithoutpermissionfromCTSL;AllTestDataPresentedinthisreport isonlyapplicabletopresentedTestsample. CTSLTesting(Dongguan)Co.,Ltd. Maincompanyaddress:HexingBuilding,HoujieAvenue,HoujieRoadHoujieTown, GuangdongProvinceDongguanCity,People’sRepublicofChina Page2of47 CTSLTesting(Dongguan)Co.,Ltd. ReportNo.:CTSL2521220076ER Room112,Building1,No.15,Jiaoyuansongshan,HetianVilltage,HoujieTown,DongguanCity,Guangdong,China. Tel:0769-86009597E-mail:[email protected]://www.ctsl-lab.com TestReport FCCID:2BTQV-AK-3116 Applicant Name JieyangRongchengDistrictBaitongElectronicsFactory Applicant Address IndustrialZone,XizhaiVillage,Xinan,RongchengDistrict,JieyangCity,China Manufacturer Name JieyangRongchengDistrictBaitongElectronicsFactory Manufacturer Address IndustrialZone,XizhaiVillage,Xinan,RongchengDistrict,JieyangCity,China TradeMark-- ProductnameAmplifier MainTest Model AK-3116 SeriesModelsSeethefirstpageofthereport Standard FCCPart15SubpartC(15.247) ANSIC63.10:2020 FCCKDB558074D0115.247MeasGuidancev05r02 TestLocation ISO/IEC17025byILAC-MRAisA2LA7556.01 CTSLTesting(Dongguan)Co.,Ltd. Room112,Building1,No.15,JiaoyuansongshanHetianVillage,HoujieTown DongguanCity,Guangdong,People’sRepublicofChina ReceiptDate2025.11.25Testperiod2025.11.25-2025.12.10IssueDate2025.12.10 Conclusion Theequipmentundertestwasfoundtobecompliancewiththe requirementsofthestandardsapplied. Performs Testing: EthanZhao TestReport Reviewer: SteveQin TestReport Authorizer: AlanLi Page3of47 CTSLTesting(Dongguan)Co.,Ltd. ReportNo.:CTSL2521220076ER Room112,Building1,No.15,Jiaoyuansongshan,HetianVilltage,HoujieTown,DongguanCity,Guangdong,China. Tel:0769-86009597E-mail:[email protected]://www.ctsl-lab.com TABLEOFCONTENTS DescriptionPage TESTREPORTVERIFICATION......................................................................................................................3 1.GENERALINFORMATION..........................................................................................................................5 1.1.GeneralDescriptionofEUT(EquipmentUnderTest).........................................................................5 1.2.AntennaInformation..................................................................................................................................6 1.3.InformationofRFCable...........................................................................................................................6 2.SUMMARYOFTEST..................................................................................................................................7 2.1.TestStandards..........................................................................................................................................7 2.2.Summaryoftestresult..............................................................................................................................7 2.3.TestFacilities.............................................................................................................................................8 2.4.Measurementuncertainty........................................................................................................................9 2.5.BlockDiagram..........................................................................................................................................10 2.6.Assistantequipmentusedfortest........................................................................................................10 2.7.ChannelList.............................................................................................................................................11 2.8.TestEquipment........................................................................................................................................12 3.MAXIMUMPEAKOUTPUTPOWER.........................................................................................................14 3.1.Limit...........................................................................................................................................................14 3.2.TestSetup................................................................................................................................................14 3.3.TestProcedure........................................................................................................................................14 3.4.TestResult...............................................................................................................................................14 4.20DBBANDWIDTHAND99%BANDWIDTH...........................................................................................15 4.1.Limit...........................................................................................................................................................15 4.2.TestSetup................................................................................................................................................15 4.3.SpectrumAnalyzerSetting.......................................…

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Page1of2 CTSLTesting(Dongguan)Co.,Ltd. ReportNo.:CTSL2521220076ER AnnexC. TestSetupPhotos FCCID:2BTQV-AK-3116 Room112,Building1,No.15,Jiaoyuansongshan,HetianVilltage,HoujieTown,DongguanCity,Guangdong,China. Tel:0769-86009597E-mail:[email protected]://www.ctsl-lab.com AnnexC. TestSetupPhotos Photo1TestSetupPhotosofRadiatedEmissionTest(30-1000MHz) Photo2TestSetupPhotosofRadiatedEmissionTest(Above1GHz) Page2of2 CTSLTesting(Dongguan)Co.,Ltd. ReportNo.:CTSL2521220076ER AnnexC. TestSetupPhotos FCCID:2BTQV-AK-3116 Room112,Building1,No.15,Jiaoyuansongshan,HetianVilltage,HoujieTown,DongguanCity,Guangdong,China. Tel:0769-86009597E-mail:[email protected]://www.ctsl-lab.com Photo3TestSetupPhotosofACPowerLineConductedEmissions ------------------------------------------EndofTestSetupPhotos------------------------------------------