QWHDW20BR1Wireless DI Boxes

AIR LINK DW20BR Bluetooth Wireless Stereo Receiver for High-Performance Stereo Audio Broadcasting User Manual V 1.0 2AIR LINK DW20BR User Manual3AIR LINK DW20BR User Manual (EN) Safety Instructions Please read these safety instructions carefully and pay close attention to any warning symbols displayed on the product and their related safety information in this instruction. Terminals marked with this symbol carry electrical current of sufficient magnitude to constitute risk of electric shock. Use only high-quality professional speaker cables with ¼" TS or twist-locking plugs pre-installed. All other installation or modification should be performed only by qualified personnel. This symbol, wherever it appears, alerts you to the presence of uninsulated dangerous voltage inside the enclosure voltage that may be sufficient to constitute a risk of shock. This symbol, wherever it appears, alerts you to important operating and maintenance instructions. Please read full manual. Caution To reduce the risk of electric shock, do not remove the top cover (or the rear section). No user serviceable parts inside. Refer servicing to qualified personnel. Caution To reduce the risk of fire or electric shock, do not expose this appliance to rain and moisture. The apparatus shall not be exposed to dripping or splashing liquids and no objects filled with liquids, such as vases, shall be placed on the apparatus. Caution These service instructions are for use by qualified service personnel only. To reduce the risk of electric shock do not perform any servicing other than that contained in the operation instructions. Repairs have to be performed by qualified service personnel. Warning Please refer to the information on the exterior of bottom enclosure for electrical and safety information before installing or operating the device. Warning To prevent possible hearing damage, do not listen at high volume levels for long periods. As a guide to setting the volume level, check that you can still hear your own voice, when speaking normally while listening with the headphones. 1. Read and keep these instructions. Heed all warnings and follow all instructions. 2. Do not use this apparatus near water (if applicable). Clean only with dry cloth. 3. Do not block ventilation openings (if applicable). Do not install in a confined space. Install only according to manufacturer's instructions. 4. Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus (including amplifiers) that produce heat. Do not place naked flame sources, such as lighted candles, on the apparatus. 5. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other (only for USA and Canada). A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. 6. (If applicable) Protect the power cord from being walked on or pinched particularly as plugs, convenience receptacles, and the point where they exit from the apparatus. 7. Use only attachments and accessories recommended by the manufacturer. 8. Use only specified carts, stands, tripods, brackets, or tables specified by the manufacturer, or sold with the apparatus (if applicable). When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over. 9. Unplug during storms, or if not in use for a long period. 10. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. 11. (If applicable)The apparatus with protective earthing terminal shall be connected to a MAINS socket outlet with a protective earthing connection. 12. (If applicable)Where the MAINS plug or an appliance coupler is used as the disconnect device, the disconnect device shall remain readily operable. 13. Internal/External Voltage Selectors (if applicable): Internal or external voltage selector switches, if any, should only be reset and re-equipped with proper plug or alternative voltage by a qualified service technician. Do not attempt to alter this yourself. 14. Class II Wiring (if applicable): To reduce the risk of electric shock, the external wiring connected to the terminals with "Class II Wiring" requires Class II wiring installed by an instructed person or the use of ready-made leads or cords. 15. Class I Wiring (if applicable): To reduce the risk of electric shock, the external wiring connected to the terminals with "Class I Wiring" requires Class I wiring installed by an instructed person or the use of ready-made leads or cords. 16. Operating temperature range 5° to 45° C (41° to 113° F). 17. LEGAL DISCLAIMER The information contained in this Quick Start Guide and accompanying manual is provided for general guidance only. While every effort has been made to ensure the accuracy and reliability of the content at the time of publication, Music Tribe Global Brands Ltd. (“Music Tribe”) makes no representations or warranties, express or implied, as to the completeness, accuracy, or suitability of the information, descriptions, illustrations, or technical specifications herein. Music Tribe accepts no liability for any direct, indirect, incidental, or consequential loss or damage arising from reliance on the information contained in this document, including but not limited to loss of data, income, profits, or business opportunities. Use of the product remains the sole responsibility of the user. Product features, design, specifications, and visual representations may be updated or modified without prior notice in the interest of continuous produc…

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Empower Tribe Commercial FZE Covered Equipment Certification Attestation Letter 3/19/2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: QWHDW20BR1 Empower Tribe Commercial FZE (“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. Empower Tribe Commercial FZE (“the applicant”) 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. Empower Tribe Commercial FZE (“the applicant”) certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Signed: Printed name: Kane Xin Title: Innovation Compliance Leader Company Name: Empower Tribe Commercial FZE Date: 3/19/2026

Empower Tribe Commercial FZE * 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. U.S. Agent Designation for Service of Process - Certification Attestation Letter 3/19/2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: QWHDW20BR1 FRN of applicant: 0022048235 Per section 2.911(d)(7) of the FCC rules, Empower Tribe Commercial FZE (“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: Empower Tribe Innovations US Inc. FCC Registration Number (FRN): 0033426594 Physical U.S. Company Address: 901 Grier Dr. Las Vegas, NV, 89119, USA Contact Person: Chase McKnight Agent Email Address: [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: Kane Xin Printed name: Chase McKnight Title: Innovation Compliance Leader Title: President Company Name: Empower Tribe Commercial FZE Company Name: Empower Tribe Innovations US Inc. Date: 3/19/2026 Date: 3/19/2026

DATE : 3/20/2026 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint EST Technology Co., Ltd. Address:Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China 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 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, I acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with Empower Tribe Commercial FZE Address: LB181504WS13, Jebel Ali Freezone Dubai, United Arab Emirates <Signature> Name：Kane Xin Title：Innovation Compliance Leader Applicant Company：Empower Tribe Commercial FZE

DATE : 3/20/2026 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Compliance Testing, LLC to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). Sincerely, <Signature> Name：Kane Xin Title：Innovation Compliance Leader Company：Empower Tribe Commercial FZE

External Photos M/N: DW20BR External Photos M/N: DW20BR External Photos M/N: DW20BR External Photos M/N: DW20BR External Photos M/N: DW20BR External Photos M/N: DW20BR

DATE : 3/20/2026 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: QWHDW20BR1 Product Name: Wireless DI Boxes Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential:  Schematics  Block diagram  Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. <Signature> Name：Kane Xin Title：Innovation Compliance Leader Company：Empower Tribe Commercial FZE

Internal Photos M/N: DW20BR Internal Photos M/N: DW20BR

Page 1 of 5 Report No. ESTE-R2603157 FCC 47 CFR MPE REPORT Empower Tribe Commercial FZE Wireless DI Boxes Model Number: DW20BR FCC ID: QWHDW20BR1 Applicant: Empower Tribe Commercial FZE Address: LB181504WS13, Jebel Ali Freezone Dubai, United Arab Emirates Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2603157 Date of Test: Jan. 31, 2026 to Mar. 12, 2026 Date of Report: Mar. 16, 2026 Page 2 of 5 Report No. ESTE-R2603157 Maximum Permissible Exposure 1. Applicable Standards Systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess limit for maximum permissible exposure. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 & KDB 447498 D04 V01 this device has been defined as a mobile device whereby a distance of 0.2m normally can be maintained between the user and the device. 1.1. Limits for Maximum Permissible Exposure (MPE) (a) Limits for Occupational/Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times ︱E︱ 2 ,︱H︱ 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842/f 4.89/f (900/f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-10000 5 6 (b) Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times ︱E︱ 2 ,︱H︱ 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-10000 1.o 30 Note: f=frequency in MHz; *Plane-wave equivalent power density Page 3 of 5 Report No. ESTE-R2603157 1.2. MPE Calculation Method E (V/m) = d G × P × 30 Power Density: Pd (W/m 2 ) = 377 E 2 E = Electric Field (V/m) P = Peak RF output Power (W) G = EUT Antenna numeric gain (numeric) d = Separation distance between radiator and human body (m) The formula can be changed to Pd = 2 d × 377 G × P × 30 From the peak EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained Page 4 of 5 Report No. ESTE-R2603157 2. Conducted Power Result Mode Frequency (MHz) Peak output power (dBm) Peak output power (mW) GFSK 2402 4.00 2.512 2441 3.73 2.360 2480 4.06 2.547 π/4-DQPSK 2402 6.21 4.178 2441 5.88 3.873 2480 6.16 4.130 8-DPSK 2402 6.82 4.808 2441 6.46 4.426 2480 6.85 4.842 BLE 1M 2402 0.59 1.146 2440 0.47 1.114 2480 0.62 1.153 BLE 2M 2402 0.78 1.197 2440 0.57 1.140 2480 0.68 1.169 Page 5 of 5 Report No. ESTE-R2603157 3. Calculated Result and Limit Mode Peak output power (dBm) Target power (dBm) MAX Target power (dBm) Antenna gain Power Density (S) (mW /cm 2 ) Limited of Power Density (S) (mW /cm 2 ) Test Result (dBi) (Linear) 2.4G Band GFSK 4.06 4±1 5 5 3.162 0.00199 1 Complies π/4-DQPSK 6.21 6±1 7 5 3.162 0.00315 1 Complies 8-DPSK 6.85 6±1 7 5 3.162 0.00315 1 Complies BLE 1M 0.62 0±1 1 5 3.162 0.00079 1 Complies BLE 2M 0.78 0±1 1 5 3.162 0.00079 1 Complies End of Test Report

Page 1 of 83 Report No. ESTE-R2603155 FCC PART 15C TEST REPORT FOR CERTIFICATION On Behalf of Empower Tribe Commercial FZE Wireless DI Boxes Model Number: DW20BR FCC ID: QWHDW20BR1 Applicant: Empower Tribe Commercial FZE Address: LB181504WS13, Jebel Ali Freezone Dubai, United Arab Emirates Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2603155 Date of Test: Jan. 31, 2026 to Mar. 12, 2026 Date of Report: Mar. 16, 2026 Page 2 of 83 Report No. ESTE-R2603155 TABLE OF CONTENTS Description Page TEST REPORT VERIFICATION .......................................................................................................... 3 1. GENERAL INFORMATION ................................................................................................................... 5 1.1. Description of Device (EUT) ............................................................................................................ 5 1.2. Antenna Information ......................................................................................................................... 5 1.3. Information of RF Cable ................................................................................................................... 5 2. SUMMARY OF TEST ........................................................................................................................... 6 2.1. Summary of test result ..................................................................................................................... 6 2.2. Test Facilities ..................................................................................................................................... 7 2.3. Measurement uncertainty ................................................................................................................ 8 2.4. Assistant equipment used for test .................................................................................................. 8 2.5. Block Diagram ................................................................................................................................... 8 2.6. Test mode .......................................................................................................................................... 9 2.7. Channel List ..................................................................................................................................... 10 2.8. Power Setting of Test Software .................................................................................................... 10 2.9. Test Equipment ............................................................................................................................... 11 3. MAXIMUM PEAK OUTPUT POWER ................................................................................................... 13 3.1. Limit ................................................................................................................................................... 13 3.2. Test Setup ........................................................................................................................................ 13 3.3. Spectrum Analyzer Setting ............................................................................................................ 13 3.4. Test Procedure ................................................................................................................................ 13 3.5. Test Result ....................................................................................................................................... 13 4. 20 DB BANDWIDTH ......................................................................................................................... 14 4.1. Limit ................................................................................................................................................... 14 4.2. Test Setup ........................................................................................................................................ 14 4.3. Spectrum Analyzer Setting ............................................................................................................ 14 4.4. Test Procedure ................................................................................................................................ 14 4.5. Test Result ....................................................................................................................................... 14 5. CARRIER FREQUENCY SEPARATION .............................................................................................. 15 5.1. Limit ................................................................................................................................................... 15 5.2. Test Setup ........................................................................................................................................ 15 5.3. Spectrum Analyzer Setting ............................................................................................................ 15 5.4. Test Procedure ................................................................................................................................ 15 5.5. Test Result ....................................................................................................................................... 15 6. NUMBER OF HOPPING CHANNEL ................................................................................................... 16 6.1. Limit ................................................................................................................................................... 16 6.2. Test Setup ........................................................................................................................................ 16 6.3. Spectrum Analyzer Setting ...…

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5dbi 測試報告 TEST REPORT CUSTOMER： CUSTOMER NO.： FILE NO： DESCRIPTION：RF Antenna +5dbi 2.4~2.5GHZ LITE P/N： DATE：2017/10/09 Antenna Testing Condition s： Radiation Pattern Testin g Standar d Horn Rotator Controlle r Anechoic Chamber 3m R3767CG Network Analyzer Antenna Antenna Electricity Characteristics： 1. Return Loss： Frequency 2400 2450 2500 Return Loss -12.492 -19.594 -16.642 Frequency 2400 2450 2500 VSWR 1.608 1.239 1.357 3. Smith Chart： Antenna Radiation patter n： H plane（2400MHZ）E plane（2400MHZ） HE1 Max Gain 4.574.16 Max Gain@Angle 279358 Min Gain 3.18-42 Min Gain@Angle 16882 Average Gain 4.12-0.98 -3dB Angle A -3db Angle B HPB H plane（2450MHZ）E plane（2450MHZ） HE1 Max Gain 4.694.33 Max Gain@Angle 2820 Min Gain 3.83-20.8 Min Gain@Angle 17283 Average Gain 4.3-0.09 -3dB Angle A -3db Angle B HPB SPECIFICATION S： Electrical Properties H plane（2500MHZ）E plane（2500MHZ） HE1 Max Gain 4.384.18 Max Gain@Angle 116184 Min Gain 3.68-28.63 Min Gain@Angle 224263 Average Gain 4.03-0.26 -3dB Angle A -3db Angle B HPB

Conducted Test Radiated Test (30-1000 MHz) Radiated Test (Above 1GHz) Radio Spectrum Test