Y4O-HC05FRFR Guitar Cabinet with 8 inch Speaker

inMusic Brands Inc. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 07-26-2026 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID or Grantee Code: [Y4O-HC05] (“inMusic Brands Inc.”) certifies that, as of the date of the filing of the application, we designate ourselves as the U.S. agent for service of process. Designated U.S. Agent Information: FRN: 0022102461 Name: inMusic Brands Inc. Address: 200 SCENIC VIEW DRIVE, SUITE 201.CUMBERLAND. Rhode Island, United States,02864 Contact Person: Hill Lien Tel.: +866-2-2717-2389 Email: [email protected] Sincerely, [Insert applicant name] [Applicant printed name] Hill Lien

inMusic Brands Inc. July 31, 2026 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for Y4O-HC05 [inMusic Brands Inc.] (“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. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, (Applicant signature) (Applicant printed name) H ill Lien inMusic Brands Inc. July 31, 2026 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for Y4O-HC05 [inMusic Brands Inc.] (“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. Sincerely, (Applicant signature) (Applicant printed name)

Declaration of Authorization We Name: i nMusic Brands Inc. Address: 200 Scenic View Drive, Cumberland, RI 02864 U.S.A Declare that: Name Representative of agent: J udy xu Agent Company name: S ushi TOWE Wireless Testing (Shenzhen) Co., Ltd. Address: F 401 and F 101, Building E, Hongwei Indstrl Zone No. 6, Liuxian 3rd Rd, Zone 70, Xin'an Street City: S henzhen Country C hina is authorized to apply for Certification of the following product(s): Product description: F RFR Guitar Cabinet with 8 inch Speaker FCC ID: H Y4O-C05 on our behalf. Sincerely yours, Contact Person: Hill Lien Applicant: inMusic Brands Inc. Phone: 886 2 2717 2389 Ext.77 E-Mail: [email protected]

INMUSIC BRANDS INC. Declaration on model difference We the undersigned hereby confirm that these models are identical, and all models have the same RF module and antenna, PCB layout, schematics and component. Only the models name are different. Production name Trademark FCC ID Model no. FRFR Guitar Cabinet with 8 inch Speaker HeadRush Y4O-HC05 FRFR-8 CAB, frfr-8 cab, FrFr-8 Cab, HC05, HC05**********, FRFR-8 CAB**********, frfr- 8 cab********** (* can be "0-9", "a- z", "A-Z," blank, "- ", "+" or any character, symbol, alphanumeric) Sincerely， Hill Lien Director of Compliance INMUSIC BRANDS INC 200 SCENIC VIEW DRIVE, SUITE 201, CUMBERLAND, Rhode Island, United States, 02864

inMusic Brands Inc. Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 Date: July 31.2026 Subject; Request for Confidentiality FCC ID: Y4O-HC05 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Hill Lien

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Sushi TOWE Wireless Testing (Shenzhen) Co., Ltd. Report No.: TCEA25100100102 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. TEST REPORT Applicant: inMusic Brands Inc. EUT Description: FRFR Guitar Cabinet with 8 inch Speaker Model Tested: HC05 Model Covered: FRFR-8 CAB, frfr-8 cab, FrFr-8 Cab, HC05, HC05**********, FRFR-8 CAB**********, frfr-8 cab**********, FrFr-8 Cab********** (* can be "0-9", "a-z", "A-Z," blank, "-", "+" or any character, symbol, alphanumeric) Brand: HeadRush FCC ID: Y4O-HC05 Standards: FCC 47 CFR Part 2.1091 Date of Receipt: 2025/11/26 Date of Issue: 2026/04/08 TOWE tested the above equipment in accordance with the requirements set forth in the above standards. The test results show that the equipment tested is capable of demonstrating compliance with the requirements as documented in this report. The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein. It is the manufacturer's responsibility to assure that additional production units of the model are manufactured with identical electrical and mechanical components. All samples tested were in good operating condition throughout the entire test program. Measurement Uncertainties are published for informational purposes only and were not taken into account unless noted otherwise. Without written approval of TOWE, the test report shall not be reproduced except in full. Jim Huang Approved By: Carey Chen Reviewed By: Page 2 / 8 Report No.: TCEA25100100102 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. Revision History Rev. Issue Date Description Revised by 01 2026/04/08 Original Carey Chen Page 3 / 8 Report No.: TCEA25100100102 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. Table of Contents 1 General Description ............................................................................................................................4 1.1 Lab Information .....................................................................................................................4 1.1.1 Testing Location ..............................................................................................................4 1.1.2 Test Facility / Accreditations ............................................................................................4 1.2 Client Information .................................................................................................................4 1.2.1 Applicant ..........................................................................................................................4 1.2.2 Manufacturer ....................................................................................................................4 1.3 Product Information ..............................................................................................................5 2 Maximum Permissible RF Exposure .................................................................................................6 2.1 RF Exposure Limit Introduction ..........................................................................................6 2.2 Equations ..............................................................................................................................7 3 RF Exposure Results ..........................................................................................................................8 3.1 Standalone Exposure Calculations .....................................................................................8 Page 4 / 8 Report No.: TCEA25100100102 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. 1 General Description 1.1 Lab Information 1.1.1 Testing Location These measurement tests were conducted at the Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. facility located at F 401 and F 101, Building E, Hongwei Industrial Zone,No. 6, Liuxian 3rd Road, Zone 70, Xingdong Community, Xin'an Street, Bao'an District, Shenzhen, People's Republic of China. The measurement facility is compliant with the test site requirements specified in ANSI C63.4-2014 Tel.: +86-755-27212361 Contact Email: [email protected] 1.1.2 Test Facility / Accreditations A2LA (Certificate Number: 7088.01) This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017 General requirements for the competence of testing and calibration laboratories. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer to joint ISO-ILAC-IAF Communiqué dated April 2017). FCC Designation No.: CN1353 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. has been recognized as an accredited testing laboratory. Te…

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Page 45 / 74 Report No.: TCEA25100100101 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. Test Graphs DH5-Ant1-2402-0~Reference-PASS DH5-Ant1-2402-30~1000-PASS DH5-Ant1-2402-1000~26500-PASS DH5-Ant1-2441-0~Reference-PASS Page 46 / 74 Report No.: TCEA25100100101 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. DH5-Ant1-2441-30~1000-PASS DH5-Ant1-2441-1000~26500-PASS DH5-Ant1-2480-0~Reference-PASS DH5-Ant1-2480-30~1000-PASS Page 47 / 74 Report No.: TCEA25100100101 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. DH5-Ant1-2480-1000~26500-PASS 2DH5-Ant1-2402-0~Reference-PASS 2DH5-Ant1-2402-30~1000-PASS 2DH5-Ant1-2402-1000~26500-PASS Page 48 / 74 Report No.: TCEA25100100101 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. 2DH5-Ant1-2441-0~Reference-PASS 2DH5-Ant1-2441-30~1000-PASS 2DH5-Ant1-2441-1000~26500-PASS 2DH5-Ant1-2480-0~Reference-PASS Page 49 / 74 Report No.: TCEA25100100101 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. 2DH5-Ant1-2480-30~1000-PASS 2DH5-Ant1-2480-1000~26500-PASS 3DH5-Ant1-2402-0~Reference-PASS 3DH5-Ant1-2402-30~1000-PASS Page 50 / 74 Report No.: TCEA25100100101 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. 3DH5-Ant1-2402-1000~26500-PASS 3DH5-Ant1-2441-0~Reference-PASS 3DH5-Ant1-2441-30~1000-PASS 3DH5-Ant1-2441-1000~26500-PASS Page 51 / 74 Report No.: TCEA25100100101 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. 3DH5-Ant1-2480-0~Reference-PASS 3DH5-Ant1-2480-30~1000-PASS 3DH5-Ant1-2480-1000~26500-PASS Page 52 / 74 Report No.: TCEA25100100101 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. Duty Cycle Test Result TestMode Antenna Frequency[MHz] ON Time [ms] Period [ms] Duty Cycle [%] Duty Cycle Factor[dB] DH5 Ant1 2402 2.89 3.75 77.07 1.13 DH5 Ant1 2441 2.89 3.75 77.07 1.13 DH5 Ant1 2480 2.89 3.75 77.07 1.13 2DH5 Ant1 2402 2.89 3.75 77.07 1.13 2DH5 Ant1 2441 2.89 3.75 77.07 1.13 2DH5 Ant1 2480 2.89 3.76 76.86 1.14 3DH5 Ant1 2402 2.89 3.74 77.27 1.12 3DH5 Ant1 2441 2.90 3.75 77.33 1.12 3DH5 Ant1 2480 2.89 3.75 77.07 1.13 Page 53 / 74 Report No.: TCEA25100100101 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. Test Graphs NTNV-DH5-Ant1-2402 NTNV-DH5-Ant1-2441 NTNV-DH5-Ant1-2480 NTNV-2DH5-Ant1-2402 NTNV-2DH5-Ant1-2441 NTNV-2DH5-Ant1-2480 Page 54 / 74 Report No.: TCEA25100100101 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. NTNV-3DH5-Ant1-2402 NTNV-3DH5-Ant1-2441 NTNV-3DH5-Ant1-2480 Page 55 / 74 Report No.: TCEA25100100101 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. Radiated Spurious Emissions Test Result Below 1GHz Project Information Mode: BT(DH5) …

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Sushi TOWE Wireless Testing (Shenzhen) Co., Ltd. Report No.: TCEA25100100101 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. TEST REPORT Applicant: inMusic Brands Inc. EUT Description: FRFR Guitar Cabinet with 8 inch Speaker Model Tested: HC05 Model Covered: FRFR-8 CAB, frfr-8 cab, FrFr-8 Cab, HC05, HC05**********, FRFR-8 CAB**********, frfr-8 cab**********, FrFr-8 Cab********** (* can be "0-9", "a-z", "A-Z," blank, "-", "+" or any character, symbol, alphanumeric) Brand: HeadRush FCC ID: Y4O-HC05 Standards: FCC 47 CFR Part 15 Subpart C Date of Receipt: 2025/11/26 Date of Test: 2025/11/26 to 2026/04/01 Date of Issue: 2026/04/08 TOWE tested the above equipment in accordance with the requirements set forth in the above standards. The test results show that the equipment tested is capable of demonstrating compliance with the requirements as documented in this report. The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein. It is the manufacturer's responsibility to assure that additional production units of the model are manufactured with identical electrical and mechanical components. All samples tested were in good operating condition throughout the entire test program. Measurement Uncertainties are published for informational purposes only and were not taken into account unless noted otherwise. Without written approval of TOWE, the test report shall not be reproduced except in full. Jim Huang Approved By: Carey Chen Reviewed By: Page 2 / 74 Report No.: TCEA25100100101 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. Revision History Rev. Issue Date Description Revised by 01 2026/04/08 Original Carey Chen Page 3 / 74 Report No.: TCEA25100100101 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. Summary of Test Results Clause FCC Part Test Items Result 4.1 §15.203/15.247(b) Antenna Requirement PASS 4.2 §15.207 AC Power Line Conducted Emission PASS 4.3 §15.247 (b)(1) Output Power PASS 4.4 §15.247 (a)(1) Occupied Bandwidth Reporting purposes only 4.5 §15.247 (a)(1) Hopping Frequency Separation PASS 4.6 §15.247 (a)(1)(iii) Number Hopping Channels PASS 4.7 §15.247 (a)(1)(iii) Dwell Time PASS 4.8 §15.247(d) Band Edge for Conducted Emissions PASS 4.9 §15.247(d) Spurious RF Conducted Emissions PASS 4.10 §15.205 §15.209 Radiated Spurious emissions and Band Edge PASS Test Method: ANSI C63.10-2020+Cor. 1-2023+C63.10a-2024 + Errata to C63.10a-2024, KDB 558074 D01 15.247 Meas Guidance v05r02. Remark: Pass is EUT meets standard requirements. Page 4 / 74 Report No.: TCEA25100100101 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. Table of Contents 1 General Description ............................................................................................................................5 1.1 Lab Information .....................................................................................................................5 1.1.1 Testing Location ..............................................................................................................5 1.1.2 Test Facility / Accreditations ............................................................................................5 1.2 Client Information .................................................................................................................5 1.2.1 Applicant ..........................................................................................................................5 1.2.2 Manufacturer ....................................................................................................................5 1.3 Product Information ..............................................................................................................6 2 Test Configuration ..............................................................................................................................7 2.1 Test Channel .........................................................................................................................7 2.2 Worst-case configuration and Mode ...................................................................................8 2.3 Support Unit used in test .....................................................................................................8 2.4 Test Environment ..................................................................................................................8 2.5 Test RF Cable ........................................................................................................................8 2.6 Modifications .........................................................................................................................8 2.7 Test Setup…

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