FCC ID: 2A8L3-DIA2022 Dum Audio Integrated Amplifier

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RATING LABEL FOR DA 1.0 DUM AUDIO INTERGRATED AMPLIFIER DUM-A-2211-0001 25x5mm,

, DUM-A-2211-0001 DUM-A-2211-0300 DUM-A-2211-0001 92x50mm,

DUM AUDIO INC. 17 Shore Acres Boulevard P1A1B7 NORTH BAY ON CANADA DATE : 2022-10-24 DUM AUDIO INC. 17 Shore Acres Boulevard P1A1B7 NORTH BAY ON CANADA Attn: Director of Certification Authority to Act as Agent On our behalf, | appoint below company and person:

Name Position ing Service Co.,Ltd. 17, Zongbu Road 2, Songshan Lake Sci&Tech, Industry Park, Dongguan City, Guangdong Province, China, 523808 to act as our agent in the preparation of this application for equipment certification. |

certify that submitted documents properly describe the device or system for which equipment certification is sought. | also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission's regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, | acknowledge that all responsibility for complying with the terms and conditions for certification, as specified by CETECOM GmbH, still resides with:

DUM AUDIO INC. Address 17 Shore Acres Boulevard P1A1B7 NORTH BAY ON CANADA Yours sincerely, Signatory Je VY. Name Noam Sugarman Position 17 Shore Acres Boulevard P1A1B7 NORTH BAY ON CANADA 7054775370

CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048

<10/24/2022>

TO WHOM IT MAY CONCERN Pursuant to Paragraphs 0.457 and 0.459 of the Commissions Rules (47 C.F.R.) and Section 552(b) (4) of the Freedom of Information Act, we request confidentiality for the following products:

FCC ID: 2A8L3-DIA2022 Model name: DA 1.0 For the product stated above, we request that the following information be held confidential;

Exhibits External Photos Long-Term Short-Term Short-Term Confidentialit Confidentiality Confidentiality Days The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. If you have any questions, please feel free to contact me at the address shown below.. Sincerely,

(Signed) /1 / ~

Name: Noam Sligarman Company: DUM AUDIO INC. Address: 17 Shore Acres Boulevard P1A1B7 NORTH BAY ON CANADA Phone: 7054775370 E-Mail: hello@dumaudio.com