PIBB12B-Fi streamer

Audioengine LLC Agent Authorization Company: Audioengine LLC Address: 6500 River Place Blvd, Bldg 7, Ste 250, Austin, Tx 78730, USA Product Name：B-Fi streamer Model Number(s): B-Fi Product Description: B-Fi streamer with WiFi function We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2020/03/06 Name: Brday Bargenquast Title: Director Company: Audioengine LLC

Audioengine LLC Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020/03/06 Subject; Request for Confidentiality FCC ID: PIBB12 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 Tune-up Procedure 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: Brday Bargenquast Title: Director

Dongguan Dongdian Testing Service Co., Ltd. Report No.: DDT-R19101009-1E4 Page 75 of 83 13. Photos of the EUT Dongguan Dongdian Testing Service Co., Ltd. Report No.: DDT-R19101009-1E4 Page 76 of 83 Dongguan Dongdian Testing Service Co., Ltd. Report No.: DDT-R19101009-1E4 Page 77 of 83 Dongguan Dongdian Testing Service Co., Ltd. Report No.: DDT-R19101009-1E4 Page 78 of 83

Dongguan Dongdian Testing Service Co., Ltd. Report No.: DDT-R19101009-1E4 Page 79 of 83 WiFi Antenna Dongguan Dongdian Testing Service Co., Ltd. Report No.: DDT-R19101009-1E4 Page 80 of 83 Dongguan Dongdian Testing Service Co., Ltd. Report No.: DDT-R19101009-1E4 Page 81 of 83 Dongguan Dongdian Testing Service Co., Ltd. Report No.: DDT-R19101009-1E4 Page 82 of 83 Dongguan Dongdian Testing Service Co., Ltd. Report No.: DDT-R19101009-1E4 Page 83 of 83 END OF REPORT

Dongguan Dongdian Testing Service Co., Ltd Report No.:DDT-R19101009-1E9 Page 1 of 6 RF EXPOSURE REPORT FOR Issued By: Dongguan Dongdian Testing Service Co., Ltd. Add: No. 17, Zongbu Road 2, Songshan Lake Sci&Tech, Industry Park, Dongguan City, Guangdong Province, China, 523808 Tel: +86-0769-38826678, E-mail: [email protected], http://www.dgddt.com Applicant : Audioengine LLC Address : 6500 River Place Blvd, Bldg 7, Ste 250, Austin, Tx 78730, USA Equipment under Test : B-Fi streamer Model No. : B-Fi Trade Mark : Audioengine FCC ID : PIBB12 Manufacturer : Shenzhen Ether Electronics Co., Ltd. Address : 4 Floor, 4 Building, Wangye Industrial Park, Baotian 3rd Rd, BaoAn District, Shenzhen ■Report No.: DDT-R19101009-1E9 ■Issued Date: Feb. 07, 2020 Dongguan Dongdian Testing Service Co., Ltd Report No.:DDT-R19101009-1E9 Page 2 of 6 TABLE OF CONTENTS Test report declares......................................................................................................3 1. General information ........................................................................................................ 5 1.1. Description of Equipment ............................................................................................... 5 1.2. Assess laboratory ........................................................................................................... 5 2. RF Exposure evaluation ................................................................................................. 5 2.1. Requirement ................................................................................................................... 5 2.2. Calculation Method ........................................................................................................ 6 2.3. Estimation Result ........................................................................................................... 6 Dongguan Dongdian Testing Service Co., Ltd Report No.:DDT-R19101009-1E9 Page 3 of 6 TEST REPORT DECLARE Standard Used: KDB447498 D01 General RF Exposure Guidance v06 We Declare: The equipment described above is assessed by Dongguan Dongdian Testing Service Co., Ltd and in the configuration assessed the equipment complied with the standards specified above. The assessed results are contained in this report and Dongguan Dongdian Testing Service Co., Ltd is assumed of full responsibility for the accuracy and completeness of these assess. After evaluation, our opinion is that the equipment In Accordance with above standard. Report No: DDT-R19101009-1E9 Date of Receipt: Jan. 07, 2020 Date of Test: Jan. 07, 2020 ~ Feb. 07, 2020 Prepared By: Approved By: _______________ _____________________ Ella Gong/Engineer Damon Hu/EMC Manager Note: This report applies to above tested sample only. This report shall not be reproduced in parts without written approval of Dongguan Dongdian Testing Service Co., Ltd. Applicant : Audioengine LLC Address : 6500 River Place Blvd, Bldg 7, Ste 250, Austin, Tx 78730, USA Equipment under Test : B-Fi streamer Model No. : B-Fi Trade mark : Audioengine Manufacturer : Shenzhen Ether Electronics Co., Ltd. Address : 4 Floor, 4 Building, Wangye Industrial Park, Baotian 3rd Rd, BaoAn District, Shenzhen Dongguan Dongdian Testing Service Co., Ltd Report No.:DDT-R19101009-1E9 Page 4 of 6 Revision history Rev. Revisions Issue Date Revised By --- Initial issue Feb. 07, 2020 Dongguan Dongdian Testing Service Co., Ltd Report No.:DDT-R19101009-1E9 Page 5 of 6 1. General information 1.1. Description of Equipment 1.2. Assess laboratory Dongguan Dongdian Testing Service Co., Ltd. Add: No. 17, Zongbu Road 2, Songshan Lake Sci&Tech, Industry Park, Dongguan City, Guangdong Province, China, 523808 Tel: +86-0769-38826678, http://www.dgddt.com, Email: [email protected] 2. RF Exposure evaluation 2.1. Requirement Systems operating under the provisions of FCC 47 CFR section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as mobile device whereby a distance of 0.2m normally can be maintained between the user and the device, and below RF Permissible Exposure limit shall comply with. Limits for General Population/Uncontrolled Exposure EUT* Name : B-Fi streamer Model Number : B-Fi EUT function description : Please reference user manual of this device Power supply : DC 5V from AC adapter Radio Technology : IEEE 802.11b/g/n FCC Operation frequency : IEEE 802.11b: 2412MHz-2462MHz IEEE 802.11g: 2412MHz-2462MHz IEEE 802.11n HT20: 2412MHz-2462MHz IEEE 802.11n HT40: 2422MHz-2452MHz Modulation : IEEE 802.11b: DSSS (CCK, DQPSK, DBPSK) IEEE 802.11g: OFDM (64QAM, 16QAM, QPSK, BPSK) IEEE 802.11n HT20, HT40: OFDM (64QAM, 16QAM, QPSK, BPSK) Transmitter rate : IEEE 802.11b: 1, 2, 5.5, 11 Mbps IEEE 802.11g: 6, 9, 12, 18, 24, 36, 48, 54 Mbps IEEE 802.11n HT20: 6.5, 13, 19.5, 26, 39, 52, 58.5, 65 Mbps IEEE 802.11n HT40: 13.5, 27, 40.5, 54, 81, 108, 121.5, 135 Mbps Antenna Type : External antenna, maximum PK gain: 1.87 dBi Sample Type : Series production Dongguan Dongdian Testing Service Co., Ltd Report No.:DDT-R19101009-1E9 Page 6 of 6 2.2. Calculation Method 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. 2.3. Estimation Result Mode PK Output power (dBm) Output power (mW) Antenna Gain (dBi) Antenna Gain (linear) MPE Values (mW/cm 2 ) MPE Limit (mW/cm 2 ) WiFi Max power 18.47 70.31 1.87 1.54 0.022 1 Note: The estimation distance is 20cm Conclusion: No SAR evaluation required since transmitter power is below FCC threshold END OF REPORT

Dongguan Dongdian Testing Service Co., Ltd Report No.: DDT-R19101009-1E4 Page 1 of 72 FCC CERTIFICATION TEST REPORT FOR Issued By: Dongguan Dongdian Testing Service Co., Ltd. Add: No. 17, Zongbu Road 2, Songshan Lake Sci&Tech, Industry Park, Dongguan City, Guangdong Province, China, 523808 Tel: +86-0769-38826678, E-mail: [email protected], http://www.dgddt.com Applicant : Audioengine LLC Address : 6500 River Place Blvd, Bldg 7, Ste 250, Austin, Tx 78730, USA Equipment under Test : B-Fi streamer Model No. : B-Fi Trade Mark : Audioengine FCC ID : PIBB12 Manufacturer : Shenzhen Ether Electronics Co., Ltd. Address : 4 Floor, 4 Building, Wangye Industrial Park, Baotian 3rd Rd, BaoAn District, Shenzhen ■Report No.: DDT-R19101009-1E4 ■Issued Date: Feb. 07, 2020 Dongguan Dongdian Testing Service Co., Ltd Report No.: DDT-R19101009-1E4 Page 2 of 72 TABLE OF CONTENTS Test report declares......................................................................................................4 1. Summary of test results ................................................................................................. 6 2. General test information ................................................................................................. 7 2.1. Description of EUT ......................................................................................................... 7 2.2. Accessories of EUT ........................................................................................................ 7 2.3. Assistant equipment used for test .................................................................................. 7 2.4. Block diagram of EUT configuration for test .................................................................. 8 2.5. Deviations of test standard............................................................................................. 8 2.6. Test environment conditions .......................................................................................... 8 2.7. Test laboratory ............................................................................................................... 8 2.8. Measurement uncertainty ............................................................................................... 9 3. Equipment used during test ......................................................................................... 10 4. 6dB Bandwidth and 99% Bandwidth ............................................................................ 11 4.1. Block diagram of test setup .......................................................................................... 11 4.2. Limits ............................................................................................................................ 11 4.3. Test Procedure ............................................................................................................. 11 4.4. Test Result ................................................................................................................... 11 4.5. original test data ........................................................................................................... 12 5. Conducted peak Output Power .................................................................................... 21 5.1. Block diagram of test setup .......................................................................................... 21 5.2. Limits ............................................................................................................................ 21 5.3. Test Procedure ............................................................................................................. 21 5.4. Test Result ................................................................................................................... 21 6. Power Spectral Density ................................................................................................ 22 6.1. Block diagram of test setup .......................................................................................... 22 6.2. Limits ............................................................................................................................ 22 6.3. Test Procedure ............................................................................................................. 22 6.4. Test Result ................................................................................................................... 22 6.5. original test data ........................................................................................................... 23 7. Band Edge and Spurious Emissions (Conducted) ...................................................... 27 7.1. Block diagram of test setup .......................................................................................... 27 7.2. Limits ............................................................................................................................ 27 7.3. Test Procedure ............................................................................................................. 27 7.4. Test Result ................................................................................................................... 28 7.5. original test data ........................................................................................................... 28 8. Radiated Spurious Emissions ...................................................................................... 43 8.1. Block diagram of test setup .......................................................................................... 43 Dongguan Dongdian Testing Service Co., Ltd Report No.: DDT-R19101009-1E4 Page 3 of 72 8.2. Limit .............................................................................................................................. 44 8.3. Test Procedure ......................................................................................................…

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Dongguan Dongdian Testing Service Co., Ltd Report No.: DDT-R19101009-1E4 Page 73 of 82 12. Test setup photograph Dongguan Dongdian Testing Service Co., Ltd Report No.: DDT-R19101009-1E4 Page 74 of 82