2AM73-0001All-In-One DJ System

Covered Equipment Certification Attestation Letter 7/2/2024 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2AM73-0001 AlphaTheta 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: Hiroaki Yoshida Title: Manager Company Name: AlphaTheta Corporation Date: 7/2/2024

Covered Equipment Certification Attestation Letter 7/2/2024 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2AM73-0001 AlphaTheta 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. Signed: Printed name: Hiroaki Yoshida Title: Manager Company Name: AlphaTheta Corporation Date: 7/2/2024

U.S. Agent Designation for Service of Process - Certification Attestation Letter 7/2/2024 TO: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2AM73-0001 FRN of applicant: 0030197354 Per section 2.911(d)(7) of the FCC rules, AlphaTheta Corporation(“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: Company Name: AlphaTheta Music Americas, Inc. FCC Registration Number (FRN): 0034149922 Physical U.S. Company Address: 2050 W. 195 th Street, Suite 109 Contact Person: Gregory Smith Agent Email Address: Gregory [email protected] The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed: Agent Signed (if different from Applicant): Signed: Signed: Printed name: Hiroaki Yoshida Printed name: Gregory Smith Title: Manager Title: Sr. Manager, Service Operations Company Name: AlphaTheta Corporation Company Name: AlphaTheta Music Americas, Inc. Date: 7/2/2024 Date: 7/2/2024 * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process.

FCC Confidentiality Request Date: July 8, 2024 To: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046-1609 To Whom It May Concern: This letter is to comply with 47 CFR 0.457(d)(2) and 0.459 pertaining to confidential material. AlphaTheta Corporation requests that the following documents regarding this submission for FCC ID: 2AM73-0001 be kept permanently confidential: Exhibit Type Operational Description Schematics Block Diagram Parts List The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to Public Notice DA04-1705 of June 15, 2004 of the Commission’s policy, we also request temporary confidential treatment of information accompanying this application as outlined below: Exhibit Type Internal Photos External Photos Test Set-up Photos User Manual Time of confidentiality: 180 days Sincerely, Signature: Name: Hiroaki Yoshida Title: Manager On behalf of: AlphaTheta Corporation 6F, Yokohama i-Mark place, 4-4-5 Minatomirai, Nishi-ku Yokohama, Kanagawa 220- 0012, Japan Telephone: +81-45-522-5434

FCC Letter of Agency Date: July 8, 2024 To: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046-1609 To Whom It May Concern: I, an officer of AlphaTheta Corporation, do hereby authorize, until further notice, Pin Zhang of TÜV Rheinland Japan Ltd., Shin Yokohama Daini Center Bldg. 1F, 3-19-5, Shin Yokohama, Kohoku-ku, Yokohama 222-0033, Japan to act on our behalf in dealings before the Federal Communications Commission with respect to all matters relating to equipment authorizations under 47CFR. This authorization includes, but is not limited to, signing of Form 731. I certify that no party (as defined in 47 CFR 1:2002) to this application, including myself, is subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Agency Agreement Expiration Date: 2025-06-30 Sincerely, Signature: Name: Hiroaki Yoshida Title: Manager On behalf of: AlphaTheta Corporation 6F, Yokohama i-Mark place, 4-4-5 Minatomirai, Nishi-ku Yokohama, Kanagawa 220- 0012, Japan Telephone: +81-45-522-5434

Rear sheet attachment position Rear view of the EUT Company Name:AlphaTheta Corporation Model Name:ALL-IN-ONE DJ SYSTEM Model Number:XDJ-AZ FCC, ISED ID

FCC ID: 2AM73-0001 Test Report – Products Prüfbericht - Produkte RF Exposure Statement: JP24434T 001 Page 1 of 3 Seite 1 von 3 Client: AlphaTheta Corporation 6F, Yokohama i-Mark place, 4-4-5 Minatomirai, Nishi-ku Yokohama, Kanagawa 220-0012, Japan Test item: All-In-One DJ System Identification: XDJ-AZ FCC Requirement According to §1.1307 (b)(1)(i)(A), transmitter device is qualified as exemption of RF human exposure, when the transmitter power is below a threshold calculated by its relevant formula defined in §1.1307 (b)(3)(i)(B): Transmitter Frequency [MHz] ERP20 cm [mW] Minimum Separation Distance d [cm] (**) Body/Extre mities Threshold P th [mW] Original Wireless Communication 2402 3060 1.5 Extremities 55 20 Body 3060 WLAN 5GHz 5745 (*) 3060 5.0 Extremities 425 3060 20 Body 3060 Bluetooth 2402 3060 5.0 Extremities 550 3060 20 Body 3060 WLAN 2.4GHz 2412 3060 5.0 Extremities 550 3060 20 Body 3060 Note (*) The worst frequency band of U-NII-3 was specified as per each conducted output power in the following. (**) As per the intended use of the product, body and extremities exposures are considered at each separation distance. Measurement Result The maximum ERP from the transmitter (EUT) is given in the following table: Transmitter Antenna Freq. Range [MHz] Cond. Power [dBm] Antenna Gain [dBi] Maximum ERP [mW] Original Wireless Communication ANT1 2402-2480 6.27 2.02 4.111 ANT2 6.30 1.45 3.631 Note: The conducted powers of Original Wireless Communication are cited from the test report JP2494EX 001 by TUV Rheinland Japan. ANT 1 and ANT 2 do not simultaneously transmit, as per the product specifications. The ERP in mW is calculated in conjunction with the following formula: ERP [mW] = 10 (Conducted Power [dBm] + Antenna Gain [dBi] - 2.15)/10 TÜV Rheinland Japan Ltd. – Global Technology Assessment Center 4-25-2 Kita-Yamata, Tsuzuki-ku, Yokohama 224-0021, Japan FCC ID: 2AM73-0001 Test Report – Products Prüfbericht - Produkte RF Exposure Statement: JP24434T 001 Page 2 of 3 Seite 2 von 3 The maximum ERP from the pre-certified transmitter module are given in the following table: Transmitter Freq. Range [MHz] Cond. Average Power dBm] Antenna Gain (*) [dBi] Maximum ERP [mW] WLAN 5GHz U-NII-1 5180-5240 16.38 2.77 50.119 U-NII-2A 5260-5320 16.39 3.41 58.210 U-NII-2C 5500-5720 16.32 2.45 45.920 U-NII-3 5745-5825 16.38 3.63 61.094 Bluetooth 2402-2480 6.47 2.32 4.613 WLAN 2.4GHz 2412-2462 18.32 2.32 70.632 Note: (*) Each antenna gain is cited from the antenna data sheet by the antenna manufacture The Conducted average power for Bluetooth and WLAN 2.4GHz/5GHz is cited from the test report MFBHVI- WTW-P22120237B by Bureau Veritas (WLAN/Bluetooth modular approval exhibit). Evaluation for Single RF Sources Standalone operation from each transmitter is evaluated by the following. Transmitter Frequency [MHz] Maximum ERP [mW] Minimum Separation Distance d [cm] Body/Extremi ties Threshold P th [mW] Original Wireless Communication, ANT1 2402 4.111 1.5 Extremities 55 20 Body 3060 WLAN 5GHz, U-NII-3 5745 61.094 5.0 Extremities 425 20 Body 3060 Bluetooth 2402 4.613 5.0 Extremities 550 20 Body 3060 WLAN 2.4GHz 2412 70.632 5.0 Extremities 550 20 Body 3060 Note: Hands of the operator may be close to each transmitting antenna during normal operation, while a body of the person can maintain a 20cm separation distance from the EUT. Therefore, both body and limb exposure are considered at this evaluation. TÜV Rheinland Japan Ltd. – Global Technology Assessment Center 4-25-2 Kita-Yamata, Tsuzuki-ku, Yokohama 224-0021, Japan FCC ID: 2AM73-0001 Test Report – Products Prüfbericht - Produkte RF Exposure Statement: JP24434T 001 Page 3 of 3 Seite 3 von 3 Evaluation for Simultaneous Transmissions As per §1.1307 (b)(3)(ii)(B) and the product specification, the following possible combinations are evaluated to identify the overall worst case for the Multiple RF Sources. Transmitter Maximum ERP [mW] Body/Extre mities Threshold P th [mW] Ratio Sum of Ratios Limit Original Wireless Communication, ANT1 4.111 Body 3060 0.0013 0.2497 1 Extremities 55 0.0747 WLAN 5GHz, UNII-3 61.094 Body 3060 0.0200 Extremities 425 0.1438 Bluetooth 4.613 Body 3060 0.0015 Extremities 550 0.0084 Transmitter Maximum ERP [mW] Body/Extre mities Threshold P th [mW] Ratio Sum of Ratios Limit Original Wireless Communication, ANT1 4.111 Body 3060 0.0013 0.2653 1 Extremities 55 0.0747 WLAN 2.4GHz 70.632 Body 3060 0.0231 Extremities 425 0.1662 Conclusion This transmitter is classified as Portable Devices (for extrimitities) by the client. One pre-certified transmitter module is incorporated into the product with separation distance over 20cm. Therefore, simultaneous transmission operations are evaluated, too. SAR evaluation is not required, since the ERP of each single RF source and all possible simultaneous transmissions are below the FCC SAR exemption threshold P th and the summation ratio (≤1) (0.2653) at the separation distance of 20cm between a body of an operator and transmitters, respectively. Hence, the device can be qualified as exemption from Routine Environmental Evaluation. TÜV Rheinland Japan Ltd. – Global Technology Assessment Center 4-25-2 Kita-Yamata, Tsuzuki-ku, Yokohama 224-0021, Japan

FCC ID: 2AM73-0001 IC: 22826-0001 Test Report – Products Prüfbericht – Produkte TÜV Rheinland Japan Ltd. Global Technology Assessment Center 4-25-2 Kita-Yamata Tsuzuki-ku Yokohama 224-0021 Japan Tel.: +81 45 914 3888 Mail: [email protected] Web: www.tuv.com Test Report No.: Prüfbericht-Nr.: JP2494EX 001 Order No.: Auftrags-Nr.: 150292510 Page 1 of 106 Seite 1 von 106 Client Reference No.: Kunden-Referenz-Nr.: N/A Order Date: Auftragsdatum: 2024-02-20 Client: Auftraggeber: AlphaTheta Corporation 6F, Yokohama i-Mark place, 4-4-5 Minatomirai, Nishi-ku Yokohama, Kanagawa 220-0012, Japan Test Item: Prüfgegenstand: All-In-One DJ System Identification / Type No.: Bezeichnung / Typ-Nr.: XDJ-AZ Serial No.: Serien-Nr.: See clause 4.3 Order Content: Auftrags-Inhalt: Wireless Testing Test Specification: Prüfgrundlage: FCC 47 CFR Part 15, Subpart C, Section 15.247 RSS-247 (Issue 3): 2023 Date of Sample Receipt: Wareneingangsdatum: 2024-03-06, 2024-04-23, 2024-05-23 N/A Test Sample No.: Prüfmuster-Nr.: A003671775-001 to 007, A003704275-001 to 003 Testing Period: Prüfzeitraum: 2024-03-06 to 2024-05-23 Place of Testing: Ort der Prüfung: Yokohama EMC Laboratory Testing Laboratory: Prüflaboratorium: TÜV Rheinland Japan Ltd. Test Result*: Prüfergebnis*: Pass compiled by: zusammengestellt von: Date: 2024-06-24 Datum: Pin Zhang Position / Stellung:Test Engineer authorized by: genehmigt von: Issue Date: 2024-06-24 Ausstellungsdatum: Daisuke Watanuki Position / Stellung:Authorizer Other /Sonstiges: Condition of the test item at delivery: Zustand des Prüfgegenstandes bei Anlieferung: Test item complete and undamaged Prüfmuster vollständig und unbeschädigt * Legend: P(ass) = passed a.m. test specification(s) F(ail) = failed a.m. test specification(s) N/A = not applicable N/T = not tested * Legende: P(ass) = entspricht o.g. Prüfgrundlage(n) F(ail) = entspricht nicht o.g. Prüfgrundlage(n) N/A = nicht anwendbar N/T = nicht getestet This test report only relates to the above mentioned test sample. Without permission of the test center this test report is not permitted to be duplicated in extracts. This test report does not entitle to carry any test mark. Dieser Prüfbericht bezieht sich nur auf das o.g. Prüfmuster und darf ohne Genehmigung der Prüfstelle nicht auszugsweise vervielfältigt werden. Dieser Bericht berechtigt nicht zur Verwendung eines Prüfzeichens. FCC ID: 2AM73-0001 IC: 22826-0001 Test Report – Products Prüfbericht – Produkte Test Report No.: Prüfbericht-Nr.: JP2494EX 001 Page 2 of 106 Seite 2 von 106 Revisions Report No.Issue dateChanges / Remarks JP2494EX 001 2024-06-24 Original document Remarks 1The equipment used during the specified testing period was calibrated according to the test laboratory calibration program. The equipment fulfils the requirements included in the relevant standards. The traceability of the test equipment used is ensured by compliance with the regulations of the laboratory’s management system. 2Unless otherwise specified by the applied standard(s), the decision rule used in this test report for statements of conformity based on numerical measurement results is the “Zero Guard Band”/“Simple Acceptance” rule in accordance with ILAC G8:2019 and IEC Guide 115:2021. When the “Zero Guard Band” rule is applied, measurement uncertainty is not taken in account. For additional information on the risk resulting from the application of the “Zero Guard Band” decision rule, refer to ILAC G8:2019. FCC ID: 2AM73-0001 IC: 22826-0001 Test Report – Products Prüfbericht – Produkte Test Report No.: Prüfbericht-Nr.: JP2494EX 001 Page 3 of 106 Seite 3 von 106 Contents 1. General Remarks ................................................................................................ 5 1.1 Test Specifications ........................................................................................................................... 5 1.2 Test Report Purpose ........................................................................................................................ 6 1.3 Complementary Materials................................................................................................................. 6 2. Test Sites ............................................................................................................. 7 2.1 Test Facilities .................................................................................................................................... 7 2.2 List of Test and Measurement Instruments ...................................................................................... 7 2.3 Measurement Uncertainty .............................................................................................................. 10 3. General Product Information ........................................................................... 11 3.1 Product Function and Intended Use ............................................................................................... 11 3.2 Ratings and System Details ........................................................................................................... 11 3.3 Noise Generating and Noise Suppressing Parts ............................................................................ 12 3.4 Submitted Documents and Information .......................................................................................... 12 4. Test Setup and Operation Modes .................................................................... 13 4.1 Principle of Test Configuration Selection ....................................................................................... 13 4.2 Operation Modes ............................................................................................................................ 13 4.3 Physical Configuration for Testing .................................................................................................. 14 4.4 Test Software .............................................................…

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Antenna Description Original Wireless Communicationモジュール部 Original Wireless Communication module PCB Antenna Antenna1 Original Wireless Communication Module PCB Antenna Antenna2 Dimensions Figure 1: Regarding the dimensions of ANT1 and ANT2. 図１︓ANT1とANT2の寸法について 5.97 mm 17.42 mm 6 17.42 mm <ANT2> <ANT1> Radiation Pattern ANT12441MHz X Z Y ANT22441MHz ※その他の仕様は、「General Information」エクセルをご確認ください。 *For other specifications, please refer to the "General Information" Excel file. Antenna Gain Antenna12.02dBi Antenna21.45dBi