FCC ID: STI-DETROIT Portable BT Speaker

(Klipsch Group, Inc.) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 01-11-2024 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID or Grantee Code: STI-DETROIT Klipsch Group, Inc. (the applicant) 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: 0012319638 Name: Klipsch Group, Inc. Address: 3502 Woodview Trace Indianapolis IN 46268 USA Contact Person: Simon Zhu Tel.: 317-860-9604 Email: simon.zhu@premiumaudioco.com Sincerely, Klipsch Group, Inc. Simon Zhu Rev 1/26/2023

Rev 1/26/2023(Klipsch Group, Inc.) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 3 January 2024 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: STI-DETROIT Simon Zhu, Klipsch Group, Inc. 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. Sincerely, _____________ Simon Zhu Rev 1/26/2023(Klipsch Group, Inc.) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 3 January 2024 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: STI-DETROIT Simon Zhu, Klipsch Group, Inc. certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List ( as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing "covered equipment . Sincerely, _____________ Simon Zhu

Klipsch Group, Inc. Date: 3 January 2024 To: Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 To Whom It May Concern: The Klipsch Group, Inc., the undersigned, hereby authorizes Mr. Wu Xuewen from Shenzhen BALUN Technology Co., Ltd., to act on the behalf of the Klipsch Group, Inc. solely in matters relating to the application for an FCC equipment authorization for FCC ID: STI-DETROIT including the signing of documents in connection with this Application. Necessary acts carried out by Shenzhen BALUN Technology Co., Ltd. in connection with the Application shall have the same effect as acts of the Klipsch Group, Inc.. The Klipsch Group, Inc. also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. Section 862. Yours Sincerely, _________________ Simon Zhu

Tune-up procedure.pdf Klipsch Group, Inc.Date: 3 January 2024 To: Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 Re: Klipsch Group, Inc. FCC ID: STI-DETROIT FCC Certification Confidentiality Request Gentlemen: This letter is to comply with 47 CFR 0.457 and 0.459 pertaining to confidentiality material. Klipsch Group, Inc. requests that the following documents regarding this submission for FCC ID: STI-DETROIT be kept Long-Term confidential: Exhibit Type File Name Block Diagram Block Diagram.pdf Schematics Schematics.pdf Operational DescriptionTune-up procedure Operational Description.pdf And below exhibit kept short-term confidential (180 days): External photos.pdf test photo.pdf Internal photos.pdf External photos Test setup photos Internal photos User manualUser manual.pdf Those documents contain detailed system and equipment description and related information about the product which Klipsch Group, Inc. considers to be confidential proprietary, a custom design and, otherwise, not releasable to the general public. Since this design is a basis form which future technological products will evolve, Klipsch Group, Inc. considers this information would be of benefit to its competitors, and that the disclosure of the information in these documents would give competitors an unfair advantage in the market. Yours Sincerely, Simon Zhu