2ACIA-TTBT020MIC/AUX/BT 30W Audio Power Amplifier

IDEAL FOR USE IN: • Mobiles • Computers • DVD players • TV ' s • Microphone FEATURES • Bluetooth v5.0 compliant with aptX • Bluetooth Receive Distance: 30 Meters (open space) • Support Remote Volume control. • Also suitable for wall-mounting. • To speaker screw terminals handle wire sizes from 24 to 12 gauge. SPECIFICATIONS • Inputs : Dynamic microphone, stereo audio line level or Bluetooth • Microphone pre-Amplifier gain:40d8 • Power Amplifier Type:Stereo Class-D • Output power:30W(rms) per channel(@ RL=4 ohm) • THD+N :0.1 % (@ RL=4 ohm, f = 1 kHz) • Minimum Load Resistance :4 ohm • Includes Speaker Protection circuit. • Power Source: 24 VDC • Size (L x W x H): 171mm x 89 mm x 38mm • Net Weight (Unit only): 234 g MIC/AUX/BT 30W Audio Powe r Amplifier A-1498 A-1328AVC A-1328AVCWP (OPTIONAL 1) (OPTIONAL 2) (CAT 5e/ 6) (DC 24V) (AUDUO SOURCE) (BLUETOOTH SOURCE) (DYNAMIC MIC) SETUP DIAGRAM Switch and volume adjustment Switch and volume adjustment This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. -This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

Ten Tronics Co., Ltd Covered Equipment Certification Attestation Letter 12/24/2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2ACIA-TTBT020 Ten Tronics Co., Ltd (“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. Ten Tronics Co., Ltd (“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. Ten Tronics Co., Ltd (“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). <Signature>: Name: Jason Wen Title: Manager Company: Ten Tronics Co., Ltd Date: 12/24/2025

Ten Tronics Co., Ltd * 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 12/24/2025 TO: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2ACIA-TTBT020 FRN of applicant: 0023677917 Per section 2.911(d)(7) of the FCC rules, [Ten Tronics Co., Ltd] (“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: Herland International Trading Inc FCC Registration Number (FRN): 0036324101 Physical U.S. Company Address: 1370 Valley Vista Dr Ste 200 Diamond Bar California 91765- 3921 Contact Person: Jianfeng Gao 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: Signed: Printed name: Jason Wen Title: Manager Company Name: Ten Tronics Co., Ltd Date: 12/24/2025 Agent Signed (if different from Applicant): Signed: Printed name: Jianfeng Gao Title: Manager Company Name: Herland International Trading Inc Date: 12/24/2025

Ten Tronics Co., Ltd 2025-12-11 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2ACIA-TTBT020 Product Name: MIC/AUX/BT 30W Audio Power Amplifier Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commission’s rules, we hereby request that the following documents be held confidential: (List here the documents for which you are seeking confidentiality – for example ...)  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: Jason Wen Title: Manager Company: Ten Tronics Co., Ltd

Ten Tronics Co., Ltd 2025-12-24 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint Shenzhen DL Testing Technology Co., Ltd.（101-201, Comprehensive Building, Tongzhou Electronics Longgang Factory Area, No.1 Baolong Fifth Road, Baolong Community, Baolong Street, Longgang District, Shenzhen, 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 Ten Tronics Co., Ltd（No. 33, Lane 347, Chung-San S.Road Young-Kang District, Tainan, Taiwan） <Signature>: Name: Jason Wen Title: Manager Company: Ten Tronics Co., Ltd

Ten Tronics Co., Ltd 2025-12-11 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: Jason Wen Title: Manager Company: Ten Tronics Co., Ltd

Ten Tronics Co., Ltd FCC ID: 2ACIA-TTBT020 Product Similarity Declaration Applicant: Ten Tronics Co., Ltd Address: No. 33, Lane 347, Chung-San S.Road Young-Kang District, Tainan, Taiwan Manufacturer: Ten Tronics Co., Ltd Address: No. 33, Lane 347, Chung-San S.Road Young-Kang District, Tainan, Taiwan Product Name: MIC/AUX/BT 30W Audio Power Amplifier Trade Mark: N/A Model Number: A-1498, A-1498M, A-1498K, A-1498MK, A-1498WPK, A-1498MWPK We (Ten Tronics Co., Ltd) hereby state that all the models are electrical identical including the same software parameter and hardware design (i.e., circuit design, PCB Layout, RF module/circuit, antenna type(s) and antenna location, components on PCB, etc.,), same mechanical structure and design (including product enclosure, materials, etc.,), All models are the same as the samples except for the model name, appearance color. <Signature>: Name: Jason Wen Title: Manager Company: Ten Tronics Co., Ltd

Shenzhen DL Testing Technology Co., Ltd. EUT PHOTO(External Photos) Shenzhen DL Testing Technology Co., Ltd. Shenzhen DL Testing Technology Co., Ltd. Shenzhen DL Testing Technology Co., Ltd. ※※※※※ END OF REPORT ※※※※※

Size:28*6mm M/N: A-1498 FCC ID: 2ACIA-TTBT020 Label location

Shenzhen DL Testing Technology Co., Ltd. EUT PHOTO(Internal Photos) Shenzhen DL Testing Technology Co., Ltd. ANT Shenzhen DL Testing Technology Co., Ltd. ※※※※※ END OF REPORT ※※※※※

FCC ID: 2ACIA-TTBT020 RF Exposure Evaluation Limits The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in KDB 447498 D01 V06 and 1.1307(b) Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposures 0.3–3.0 614 1.63 *(100) 6 3.0–30 1842/f 4.89/f *(900/f 2 ) 6 30–300 61.4 0.163 1.0 6 300–1500 f/300 6 1500–100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f 2 ) 30 30–300 27.5 0.073 0.2 30 300–1500 f/1500 30 1500–100,000 1.0 30 f = frequency in MHz Friis transmission formula: Pd = (Pout*G)/(4*pi*r 2 ) Where Pd = power density in mW/cm 2 , Pout = output power to antenna in mW; G = gain of antenna in linear scale, Pi = 3.1416; R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm 2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. Test Result of RF Exposure Evaluation BT mode Channel Output power to antenna (dBm) Output power to antenna (mW) Power Density at R=20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result GFSK -2.18 0.6053 0.0002 1.0 PASS π/4 DQPSK -1.26 0.7482 0.0002 1.0 PASS 8DPSK -0.97 0.7998 0.0002 1.0 PASS Remark: antenna gain=1.86dBi

Brand / Model：6623C09021 Remark ：2.4~2.5GHz Tested by：Nick Dai Freq(MHz) Peak. dBi Efficiency Average . dBi 2400.00 1.39 73.97% -1.31 2410.00 1.51 75.67% -1.21 2420.00 1.60 77.81% -1.09 2430.00 1.50 78.15% -1.07 2440.00 1.45 77.68% -1.10 2450.00 1.58 78.32% -1.06 2460.00 1.71 78.49% -1.05 2470.00 1.86 78.55% -1.05 2480.00 1.85 77.92% -1.08 2490.00 1.68 77.44% -1.11 2500.00 1.51 76.56% -1.16 Brand / Model：6623C09021 Remark ：2.4~2.5GHz (E-plane) Tested by：Nick Dai Brand / Model：6623C09021 Remark ：2.4~2.5GHz (H-plane) Tested by：Nick Dai 6623C09021 S11 VSWR C:\Users\se\AppData\Local\Microsoft\Windows\INetCache\Low\IE\Z0 PCMBXQ\6672113031-110_160563[1].dwg 1 / 3 版本說明 設計 核准 容許公差 比例 單位 圖號 張數 版本 品名 I-PEX 接頭 FR-4 單面板- 0.6mm Standard Coaxial Cable 1.13mm KINSUN 正面 背面 B6672F1100 Frequency Rang :2.4~2.5GHz Impedance V.S.W.R Radiation :50 Ω : ≦ 1.6 :Directional 雙面膠帶貼於正面 1C 2C 3C

Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-251117036R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 1 of 51 FCC Part 15C Test Report FCC ID: 2ACIA-TTBT020 Applicant: Ten Tronics Co., Ltd Address: No. 33, Lane 347, Chung-San S.Road Young-Kang District, Tainan, Taiwan Manufacturer: Ten Tronics Co., Ltd Address: No. 33, Lane 347, Chung-San S.Road Young-Kang District, Tainan, Taiwan Product Name: MIC/AUX/BT 30W Audio Power Amplifier Trade Mark: N/A Model Number: A-1498, A-1498M, A-1498K, A-1498MK, A-1498WPK, A-1498MWPK Date of Receipt: Nov. 17, 2025 Test Date: Nov. 17, 2025 - Nov. 27, 2025 Date of Report: Nov. 27, 2025 Prepared By: Shenzhen DL Testing Technology Co., Ltd. Address: 101-201, Comprehensive Building, Tongzhou Electronics Longgang Factory Area, No.1 Baolong Fifth Road, Baolong Community, Baolong Street, Longgang District, Shenzhen, China Applicable Standards: FCC PART 15 C 15.247 ANSI C63.10:2020 Test Result: Pass Report Number: DLE-251117036R Prepared (Test Engineer): Randy Xie Reviewer (Supervisor): Jack Bu Approved (Manager): Jade Yang This test report is based on a single evaluation of one sample of above mentioned products. It is not permitted to be duplicated in extracts without written approval of Shenzhen DL Testing Technology Co., Ltd. Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-251117036R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 2 of 51 Table of Contents Page 1 . SUMMARY OF TEST RESULTS 4 1.1 MEASUREMENT UNCERTAINTY 4 2 . GENERAL INFORMATION 5 2.1 GENERAL DESCRIPTION OF EUT 5 2.2 DESCRIPTION OF TEST MODES 6 2.3 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 6 2.4 DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE) 7 2.5 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 7 2.6 EQUIPMENTS LIST FOR ALL TEST ITEMS 8 3 . EMC EMISSION TEST 9 3.1 CONDUCTED EMISSION MEASUREMENT 9 3.1.1 POWER LINE CONDUCTED EMISSION LIMITS 9 3.1.2 TEST PROCEDURE 9 3.1.3 DEVIATION FROM TEST STANDARD 9 3.1.4 TEST SETUP 10 3.1.5 EUT OPERATING CONDITIONS 10 3.1.6 TEST RESULTS 11 3.2 RADIATED EMISSION MEASUREMENT 13 3.2.1 RADIATED EMISSION LIMITS 13 3.2.2 TEST PROCEDURE 14 3.2.3 DEVIATION FROM TEST STANDARD 14 3.2.4 TEST SETUP 14 3.2.5 EUT OPERATING CONDITIONS 15 3.2.6 TEST RESULTS (BETWEEN 9KHZ – 30 MHZ) 16 3.2.7 TEST RESULTS (BETWEEN 30MHZ – 1GHZ) 17 3.2.8 TEST RESULTS (1GHZ~25GHZ) 19 3.3 RADIATED BAND EMISSION MEASUREMENT 22 3.3.1 TEST REQUIREMENT: 22 3.3.2 TEST PROCEDURE 22 3.3.3 DEVIATION FROM TEST STANDARD 22 3.3.4 TEST SETUP 23 3.3.5 EUT OPERATING CONDITIONS 23 4 . PEAK OUTPUT POWER 35 4.1 APPLIED PROCEDURES / LIMIT 35 4.1.1 TEST PROCEDURE 35 4.1.2 DEVIATION FROM STANDARD 35 4.1.3 TEST SETUP 35 4.1.4 EUT OPERATION CONDITIONS 35 Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-251117036R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 3 of 51 Table of Contents Page 4.1.5 TEST RESULTS 36 5 . NUMBER OF HOPPING CHANNEL 39 5.1 APPLIED PROCEDURES / LIMIT 39 5.1.1 TEST PROCEDURE 39 5.1.2 DEVIATION FROM STANDARD 39 5.1.3 TEST SETUP 39 5.1.4 EUT OPERATION CONDITIONS 39 5.1.5 TEST RESULTS 39 6 . BANDWIDTH TEST 41 6.1 APPLIED PROCEDURES / LIMIT 41 6.1.1 TEST PROCEDURE 41 6.1.2 DEVIATION FROM STANDARD 41 6.1.3 TEST SETUP 41 6.1.4 EUT OPERATION CONDITIONS 41 6.1.5 TEST RESULTS 42 7 . HOPPING CHANNEL SEPARATION MEASUREMENT 45 7.1 APPLIED PROCEDURES / LIMIT 45 7.1.1 TEST PROCEDURE 45 7.1.2 DEVIATION FROM STANDARD 45 7.1.3 TEST SETUP 45 7.1.4 EUT OPERATION CONDITIONS 45 7.1.5 TEST RESULTS 45 8 . DWELL TIME OF OCCUPANCY 47 8.1 APPLIED PROCEDURES / LIMIT 47 8.1.1 TEST PROCEDURE 47 8.1.2 DEVIATION FROM STANDARD 47 8.1.3 TEST SETUP 47 8.1.4 EUT OPERATION CONDITIONS 47 8.1.5 TEST RESULTS 48 9 . ANTENNA REQUIREMENT 51 9.1 STANDARD REQUIREMENT 51 9.2 EUT ANTENNA 51 10 . TEST SEUUP PHOTO 51 11 . EUT PHOTO 51 Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-251117036R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 4 of 51 1.. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part15 (15.247) , Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS 15.247(c) Radiated Spurious Emission PASS 15.205 Band Edge Emission PASS 15.247(b)(1) Peak Output Power PASS 15.247(a)(iii) Number of Hopping Frequency PASS 15.247(a)(iii) Dwell Time PASS 15.247(a)(1) Bandwidth PASS 15.247(a)(1) Hopping Channel Separation PASS 15.203 Antenna Requirement PASS NOTE: (1)” N/A” denotes test is not applicable in this Test Report 1.1. MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2，providing a level of confidence of approximately 95 %。 No. Item Uncertainty 1 Conducted Emission Test ±2.56dB 2 RF power,conducted ±0.42dB 3 Spurious emissions,conducted ±2.76dB 4 All emissions,radiated(<1G) ±3.65dB 5 All emissions,radiated(>1G) ±4.89dB 6 Temperature ±0.5°C 7 Humidity ±2% 8 20dB Bandwidth ±0.2MHz Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-251117036R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 5 of 51 2.. GENERAL INFORMATION 2.1. GENERAL DESCRIPTION OF EUT Product Name: MIC/AUX/BT 30W Audio Power Amplifier Trade Mark: N/A Model Number: A-1498, A-1498M, A-1498K, A-1498MK, A-1498WPK, A-1498MWPK Test Model: A-1498 Model Difference: All models are same as the samples except model name and appearance color, they have the same structure and circuit. Operation Frequency: 2402~2480MHz Channel numbers: 79 Channels Channel separation: 1/2/3MHz Modulation technology: GFSK, π/4 DQPSK, 8DPSK Antenna Type: Internal Antenna Antenna gain: 1.86dBi Power supply: DC 24V from adapter Note: 1.For a more detailed features description, please refer to the manufacturer’s specifications or the User's Manual. 2.The EUT’s all information provided by client. 2. Chann…

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Shenzhen DL Testing Technology Co., Ltd. EUT TEST PHOTO Radiated Measurement Photos Shenzhen DL Testing Technology Co., Ltd. Conducted Measurement Photos ※※※※※ END OF REPORT ※※※※※