SOP426571AGUITAR AMPLIFIER

Covered Equipment Certification Attestation Letter 2024-08-30 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: SOP426571A Roland Corporation (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Roland Corporation (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Signed: Printed name: Hisashi Ninomiya Title: Assistant Manager Company Name: Roland Corporation Address: 1-5-3, Shinmiyakoda, Kita-ku, Hamamatsu Shizuoka, 431-2103, Japan Phone: +81-53-428-5095 E- Mail: [email protected] Date: 2024-08-30

2024-08-30 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 AUTHORITY TO ACT AS AGENT - FCC On our behalf, I appoint Damon Hu, Guangdong Dongdian Testing Service Co.,Ltd.( Unit 2, Building 1, No.17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808), to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in FCC regulations will have affixed to it a label identical to that submitted for approval with this application. In signing this letter, Applicant certifies that neither the applicant nor any party to the application is not subject to a denial of Federal benefits, that include FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. § 862 because of a conviction for possession or distribution of a controlled substance. See 47 CFR 1.2002(b) for the definition of a "party" for these purposes. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, as specified by Nemko North America Inc., still resides still resides with us. Sincerely, Printed name: Hisashi Ninomiya Title: Assistant Manager Company Name: Roland Corporation Address: 1-5-3, Shinmiyakoda, Kita-ku, Hamamatsu Shizuoka, 431-2103, Japan Phone: +81-53-428-5095 E- Mail: [email protected] Date: 2024-08-30

2024-08-30 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 REQUEST FOR CONFIDENTIALITY – FCC FCC ID: SOP426571A Pursuant to Sections 0.457(d) and 0.459 of the Commission’s Rules and FCC Guidance document 726920, we hereby request permanent confidential treatment of exhibits identified as such in the table below and request they are permanently withheld from public review based on the documents containing trade secrets and proprietary information not customarily released to the public. The public disclosure of this information might be harmful to the applicant and provide unjustified benefits to its competitors. We also request short-term confidentiality on certain exhibits until the intended date of marketing as outlined below. We request the exhibits be withheld from public view for a period of insert number of 180 days (cannot exceed 180 days) days. We attest marketing of the product will only commence after the period of short-term confidentiality expires, or if marketing is to commence before the requested number of days listed above, the grantee will inform Nemko to release the Short-Term Confidentiality information withheld on the FCC equipment authorization website. Exhibit Type of Confidentiality Requested Block Diagrams ☒ Permanent ☐ Short Term External Photos ------------------ ☒ Short Term Internal Photos ☐ Permanent* ☒ Short Term Operation Description ☒ Permanent ☐ Short Term Parts List & Placement/BOM ☐ Permanent ☐ Short Term Tune-Up Procedure ☐ Permanent ☐ Short Term Schematic Diagrams ☒ Permanent ☐ Short Term Test Setup Photos ------------------ ☒ Short Term User’s Manual ☐ Permanent* ☒ Short Term The asterisked items (*) require further information to be provided in this justification letter before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 D01 found at: https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731 and review section II, 3) regarding specific information that must accompany these requests. Note: any documents held under the Short-Term confidentiality will automatically become public after the requested time if an appropriate extension request has not been received. Any exhibits (i.e., schematic diagrams) that may have already been requested to have “Permanent” confidentiality as shown above need not be repeated under Short-Term confidentiality request. Sincerely, Signed : Printed name: Hisashi Ninomiya Title: Assistant Manager Company Name: Roland Corporation Address: 1-5-3, Shinmiyakoda, Kita-ku, Hamamatsu Shizuoka, 431-2103, Japan Phone: +81-53-428-5095 E- Mail: [email protected] Date: 2024-08-30

NOTE:ThisdocumentisissuedbyShenzhenMorlabCommunicationsTechnologyCo.,Ltd.,thetestreportshallnotbereproducedexceptin fullwithoutpriorwrittenpermissionofthecompany.Thetestresultsapplyonlytotheparticularsample(s)testedandtothespecifictestscarried outwhichisavailableonrequestforvalidationandinformationconfirmedatourwebsite. MORLAB ShenzhenMorlabCommunicationsTechnologyCo.,Ltd.,FL.1-3,BuildingA, FeiYangSciencePark,No.8LongChangRoad,Block67,BaoAnDistrict, ShenZhen,GuangDongProvince,P.R.China Tel:86-755-36698555Fax:86-755-36698525 Http://www.morlab.cnE-mail:[email protected] Page1of 14 REPORTNo.：SZ24070093E01 TESTREPORT APPLICANT:GPElectronics(SZ)Limited PRODUCTNAME:On-boardPCBPIFAAntennaofBluetoothBK32881LModule MODELNAME:8902-0750 TRADENAME:N/A BRANDNAME:N/A STANDARD(S):IEEEStd149-2021 RECEIPTDATE:2024-07-11 TESTDATE:2024-07-12 ISSUEDATE:2024-07-31 Editedby: MaoRujie(Rapporteur) Approvedby: ChiShide(Supervisor) MORLAB ShenzhenMorlabCommunicationsTechnologyCo.,Ltd.FL.1-3,BuildingA, FeiYangSciencePark,No.8LongChangRoad,Block67,BaoAnDistrict, ShenZhen,GuangDongProvince,P.R.China Tel:86-755-36698555Fax:86-755-36698525 Http://www.morlab.cnE-mail:[email protected] Page2of14 REPORTNo.：SZ24070093E01 DIRECTORY 1.TechnicalInformation ........................................................................................................3 1.1.ApplicantandManufacturerInformation ....................................................................3 1.2.EquipmentUnderTest(EUT)Description...................................................................3 2.TestResults........................................................................................................................4 2.1.AppliedReferenceDocuments.....................................................................................4 2.2.TestConditions...............................................................................................................4 2.3.MeasurementUncertainty.............................................................................................4 2.4.TestResultslists.............................................................................................................5 AnnexATestSetupPhotos..................................................................................................6 AnnexBFigures .....................................................................................................................7 1.2DRadiationPattern .........................................................................................................7 2.3DRadiationPattern .........................................................................................................8 3.ReturnLoss ......................................................................................................................10 AnnexCEUTPhotos ...........................................................................................................11 AnnexDGeneralInformation.............................................................................................14 1.1IdentificationoftheResponsibleTestingLaboratory..............................................14 1.2IdentificationoftheResponsibleTestingLocation..................................................14 1.3TestEquipmentsUtilized..............................................................................................14 1.4TestSoftwareUtilized....................................................................................................14 ChangeHistory VersionDateReasonforchange 1.02024-07-31Firstedition MORLAB ShenzhenMorlabCommunicationsTechnologyCo.,Ltd.FL.1-3,BuildingA, FeiYangSciencePark,No.8LongChangRoad,Block67,BaoAnDistrict, ShenZhen,GuangDongProvince,P.R.China Tel:86-755-36698555Fax:86-755-36698525 Http://www.morlab.cnE-mail:[email protected] Page3of14 REPORTNo.：SZ24070093E01 1.TechnicalInformation Note:Providebyapplicant. 1.1.ApplicantandManufacturerInformation Applicant: GPElectronics(SZ)Limited ApplicantAddress: 15/F,T1Building,ShumyipUpperhills,No.5001HuanggangRD, FutianDistrict,Shenzhen,Guangdong,China(PostalCode:518038) Manufacturer: GPElectronics(Huizhou)Co.,Ltd. ManufacturerAddress: (BOSSMINGTechnologyPark)No.3,XingPingEastRoad,Dong JiangScience&TechnologyPark,ZhongKaiHi-TechInd.Dev.Zone, Huizhou,Guangdong,China(PostalCode:516255) Factory: GPElectronics&AcousticsCo.,Ltd. FactoryAddress: No.19/6,7Moo2,BangkratuekSub-District,SampranDistrict, NakhonPathomProvinceThailand 1.2.EquipmentUnderTest(EUT)Description WirelessTypeBluetooth Frequency2400MHz-2500MHz IMEIN/A SampleNo.1# MORLAB ShenzhenMorlabCommunicationsTechnologyCo.,Ltd.FL.1-3,BuildingA, FeiYangSciencePark,No.8LongChangRoad,Block67,BaoAnDistrict, ShenZhen,GuangDongProvince,P.R.China Tel:86-755-36698555Fax:86-755-36698525 Http://www.morlab.cnE-mail:[email protected] Page4of14 REPORTNo.：SZ24070093E01 2.TestResults 2.1.AppliedReferenceDocuments Leadingreferencedocumentsfortesting: No.IdentityDocumentTitle 1IEEEStd149-2021 IEEERecommendedPracticeforAntenna Measurements 2.2.TestConditions TestEnvironmentConditions ： RelativeHumidity(%):25-75 Temperature(°C):10-30 2.3.MeasurementUncertainty Theuncertaintyiscalculatedusingthemethodssuggestedinthe“GuidetotheExpressionof UncertaintyinMeasurement”(GUM)publishedbyISO.Whenthetestresultisacriticalvalue,we willusethemeasurementuncertaintygivethejudgmentresultbasedonthe95%Confidence intervals. MORLAB ShenzhenMorlabCommunicationsTechnologyCo.,Ltd.FL.1-3,BuildingA, FeiYangSciencePark,No.8LongChangRoad,Block67,BaoAnDistrict, ShenZhen,GuangDongProvince,P.R.China Tel:86-755-36698555Fax:86-755-36698525 Http://www.morlab.cnE-mail:[email protected] Page5of14 REPORTNo.：SZ24070093E01 2.4.TestResultslists 2.4.1.Gain Frequency (MHz) Gain(dBi) 2400-8.11 2410-8.64 2420-8.94 2430-9.15 2440-9.22 2450-9.23 2460-9.64 2470-10.07 2480-10.05 2490-10.02 2500-9.99 2.4.2.ReturnLoss Frequency (MHz) ReturnLoss(dB) 2400-2.25 2440-1.97 2480-1.87 MORLAB ShenzhenMorlabCommunicati…

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Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE24062715-2E08 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 1 of 7 RF EXPOSURE REPORT Applicant : Roland Corporation Address of Applicant : 1-5-3, Shinmiyakoda, Kita-ku, Hamamatsu, Shizuoka, 431-2103, Japan Manufacturer : Roland Corporation Address of Manufacturer : 1-5-3, Shinmiyakoda, Kita-ku, Hamamatsu, Shizuoka, 431-2103, Japan Equipment under Test : GUITAR AMPLIFIER Model No. : KTN-MINI X FCC ID : SOP426571A Test Standard(s) : KDB447498 D01 General RF Exposure Guidance v06 Report No. : DDT-RE24062715-2E08 Issue Date : 2024/08/12 Issue By : Guangdong Dongdian Testing Service Co., Ltd. Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE24062715-2E08 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 2 of 7 Table of Contents 1. General Test Information .............................................................................................. 5 1.1. Description of EUT ........................................................................................................ 5 1.2. Accessories of EUT ...................................................................................................... 5 1.3. Test laboratory .............................................................................................................. 5 2. RF Exposure evaluation for FCC.................................................................................. 6 2.1. Assessment procedure ................................................................................................. 6 2.2. Assess result ................................................................................................................. 6 3. Photos of the EUT ........................................................................................................ 7 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE24062715-2E08 Page 3 of 7 Test Report Declare Applicant : Roland Corporation Address of Applicant : 1-5-3, Shinmiyakoda, Kita-ku, Hamamatsu, Shizuoka, 431-2103, Japan Equipment under Test : GUITAR AMPLIFIER Model No. : KTN-MINI X Manufacturer : Roland Corporation Address of Manufacturer : 1-5-3, Shinmiyakoda, Kita-ku, Hamamatsu, Shizuoka, 431-2103, Japan Test Standard Used: KDB447498 D01 General RF Exposure Guidance v06 We Declare: The equipment described above is tested by Guangdong Dongdian Testing Service Co., Ltd. and in the configuration tested the equipment complied with the standards specified above. The test results are contained in this test report and Guangdong Dongdian Testing Service Co., Ltd. is assumed of full responsibility for the accuracy and completeness of these tests. Report No.: DDT-RE24062715-2E08 Date of Receipt: 2024/07/11 Date of Test: 2024/07/12~2024/08/12 Prepared By: Approved By: ____________________ ______________________ Jacky Huang/Engineer Damon Hu/EMC Manager Note: This report applies to above tested sample only. This report shall not be reproduced in parts without written approval of Guangdong Dongdian Testing Service Co., Ltd. Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE24062715-2E08 Page 4 of 7 Revision History Rev. Revisions Issue Date Revised By --- Initial issue 2024/08/12 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE24062715-2E08 Page 5 of 7 1. General Test Information 1.1. Description of EUT EUT Name : GUITAR AMPLIFIER Model Number : KTN-MINI X EUT Function Description : Please reference user manual of this device Power Supply : DC 5V is powered by an external adapter or 7.2V built-in NiMH battery Radio Specification : Bluetooth BDR/EDR/LE Operation Frequency : 2402 MHz-2480 MHz Modulation : GFSK, /4-DQPSK, 8DPSK Antenna : PCB Antenna, max peak gain: -8.11 dBi Note: The above EUT information is declared by manufacturer and for more detailed features description please refer to the manufacturer's specifications or User's Manual. The above Antenna information is declared by manufacturer and for more detailed features description please refer to the manufacturer's specifications, the laboratory shall not be held responsible. 1.2. Accessories of EUT Accessories Manufacturer Model number Description / / / / 1.3. Test laboratory Guangdong Dongdian Testing Service Co., Ltd. Add.: Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808. Tel.: +86-0769-38826678, http://www.dgddt.com, Email: [email protected]. CNAS Accreditation No. L6451; A2LA Accreditation Number: 3870.01 FCC Designation Number: CN1182, Test Firm Registration Number: 540522 Innovation, Science and Economic Development Canada Site Registration Number: 10288A Conformity Assessment Body identifier: CN0048 VCCI facility registration number: C-20087, T-20088, R-20123, R-20155, G-20118 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE24062715-2E08 Page 6 of 7 2. RF Exposure evaluation for FCC 2.1. Assessment procedure According to 447498 D01 General RF Exposure Guidance v06 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where: f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison 2.2. Assess result Manufacturing Tolerance: Mode Antenna Frequency [MHz] Target (dBm) Tolerance ±(dB) BDR (Peak) Ant1 2402 -5.38 1 2441 -5.15 1 2480 -6.84 1 EDR (Peak) Ant1 2402 -5.48 1 2441 -5.24 1 2480 -6.98 1 BLE (Peak) Ant1 2402 -5.79 1 2440 -5.57 1 2480 -7.33 1 Estimation Result: Worse case is as below: [2441 MHz, -4.15 dBm, (0.385 mW) output power] (0.385/5) ·[√2.441(GHz)] = 0.12< 3.0 for 1-g SAR…

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Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE24062715-2E06 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 1 of 100 FCC AND ISED CERTIFICATION TEST REPORT Applicant : Roland Corporation Address of Applicant : 1-5-3, Shinmiyakoda, Kita-ku, Hamamatsu, Shizuoka, 431-2103, Japan Manufacturer : Roland Corporation Address of Manufacturer : 1-5-3, Shinmiyakoda, Kita-ku, Hamamatsu, Shizuoka, 431-2103, Japan Equipment under Test : GUITAR AMPLIFIER Model No. : KTN-MINI X FCC ID : SOP426571A IC : 9569A-426571A Test Standard(s) : FCC Rules and Regulations Part 15 Subpart C, RSS-247 Issue 3 August 2023, ANSI C63.10:2020, RSS-Gen Issue 5, Apr. 2018, Amendment 2 (February 2021) Report No. : DDT-RE24062715-2E06 Issue Date : 2024/08/12 Issue By : Guangdong Dongdian Testing Service Co., Ltd. Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE24062715-2E06 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 2 of 100 Table of Contents 1. Summary of Test Results ............................................................................................. 7 2. General Test Information .............................................................................................. 8 2.1. Description of EUT ........................................................................................................ 8 2.2. Accessories of EUT ...................................................................................................... 9 2.3. Block diagram of EUT configuration for test ................................................................. 9 2.4. Decision of final test mode ........................................................................................... 9 2.5. Deviations of test standard ......................................................................................... 10 2.6. Test environment conditions ....................................................................................... 10 2.7. Test laboratory ............................................................................................................ 10 2.8. Measurement uncertainty ........................................................................................... 11 3. Equipment Used During Conductive Test .................................................................. 12 4. 20 dB Bandwidth ......................................................................................................... 13 4.1. Block diagram of test setup ........................................................................................ 13 4.2. Limits ........................................................................................................................... 13 4.3. Test procedure ............................................................................................................ 13 4.4. Test result ................................................................................................................... 14 4.5. Test graphs ................................................................................................................. 15 5. 99% Bandwidth ........................................................................................................... 18 5.1. Block diagram of test setup ........................................................................................ 18 5.2. Limits ........................................................................................................................... 18 5.3. Test procedure ............................................................................................................ 18 5.4. Test result ................................................................................................................... 19 5.5. Test graphs ................................................................................................................. 20 6. Maximum Peak Output Power .................................................................................... 23 6.1. Block diagram of test setup ........................................................................................ 23 6.2. Limits ........................................................................................................................... 23 6.3. Test procedure ............................................................................................................ 23 6.4. Test result ................................................................................................................... 24 6.5. Test graphs ................................................................................................................. 25 7. Carrier Frequency Separation .................................................................................... 28 7.1. Block diagram of test setup ........................................................................................ 28 7.2. Limits ........................................................................................................................... 28 7.3. Test procedure ............................................................................................................ 28 7.4. Test result ................................................................................................................... 29 7.5. Test graphs ................................................................................................................. 30 8. Dwell Time .................................................................................................................. 31 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE24062715-2E06 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 3 of 100 8.1. Block diagram of test setup ........................................................................................ 31 8.2. Limits ...…

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