2A9Y2LP-225Lepai LP-225 12-20 VDC 2 x 25W Mini Bluetooth Amplifier with 3.5mm Line Input and Preamp Line Output

LepaiLP-225 DIGITALHI-FI AUDIOAMPLIFIER USERMANUAL ThankyouforchoosingthisLepaiLP-225audioamplifierforyourmusicprojects. Lepaiamplifiersarepopularamongcustomersfortheirhigh-qualityaudio performance,usefulfunctionandhighcost-performanceratio. Contents: 1xLepaiLP-225amplifier TheLepaiLP-225poweramplifierprovides20wattsRMSofcleanaudiopowerto anysetofstereospeakers.Thisampisapplicableforusingonanydesk, countertop,workbench,andeveninDIYprojectsormobileaudioapplications.Built inmountingbracketsallowittobemountedin,on,orunderneathnearlyanysurface orcontainer. LP-225isequippedwithabuilt-inloudspeakerprotectioncircuittoprotect yourspeakersfromhighvolumeburstsofaudiowhentheamplifieristurned on. LP-225supportsstereoRCAor3.5mminputsfromanyphone,tablet,CDplayer, TV,orstreamingplayer.Audiowillplayregardlessofwhichinputisconnectedas thereisnoinputswitching. SeparateBassandTrebleadjustmentsrotaryallowcustomerstocustomizeaudio playbackforbetterlisteningexperience.Besidesthat,originalaudiosourcesignal canbepassedthroughwithoutenhancement. Connections ElectricalSpecifications Specificationstypical@+25C,unlessotherwisenoted.Specificationssubjecttochangewithoutnotice. ParameterConditions Min. Typ. Max. Units NumberofChannels -- 2 -- MinimumLoadImpedance - 4 8 - Ω NominalPowerRequirement@2x25W,24V,1kHz - 2x25W - W OperatingVoltage@1kHz,8Ohm 12 - 20 V IdlePower Signaldetected@12V - 0.84 - W SwitchingFrequency SDFloating@24V - 300 - kHz AudioPerformance Parameter Conditions Min. Typ. Max. Units AmpGain LineIn L&R - 29.0 - B SNR LineIn 2x25W@8Ohm,A-weighting L&R - 98.8 - B THD+N LineIn 1W@8Ohm,1kHz L&R - 0.017 - % OutputNoiseLevel LineIn@12V A-weighting,InputConnectedtoGND L&R - 90 - V BT@12V A-weighting,InputConnectedtoGND L&R - 85 - V InputImpedance LineIn@8Ohm,1kHz, - 10 - Ω DCOffset -- 5 - V Specificationstypical@+25C,unlessotherwisenoted.Specificationssubjecttochangewithoutnotice. d d u u k m TypicalPerformanceGraphs FCCWARNING Thisdevicecomplieswithpart15oftheFCCRules.Operationissubjecttothefollowingtwo conditions:(1)thisdevicemaynotcauseharmfulinterference,and(2)thisdevicemustaccept anyinterferencereceived,includinginterferencethatmaycauseundesiredoperation. Anychangesormodificationsnotexpresslyapprovedbythepartyresponsibleforcompliance couldvoidtheuser'sauthoritytooperatetheequipment. NOTE:ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassBdigital device,pursuanttoPart15oftheFCCRules.Theselimitsaredesignedtoprovidereasonable protectionagainstharmfulinterferenceinaresidentialinstallation.Thisequipmentgenerates, usesandcanradiateradiofrequencyenergyand,ifnotinstalledandusedinaccordancewiththe instructions,maycauseharmfulinterferencetoradiocommunications. However,thereisnoguaranteethatinterferencewillnotoccurinaparticularinstallation.If thisequipmentdoescauseharmfulinterferencetoradioortelevisionreception, whichcanbedeterminedbyturningtheequipmentoffandon,theuserisencouragedtotryto correcttheinterferencebyoneormoreofthefollowingmeasures: --Reorientorrelocatethereceivingantenna. --Increasetheseparationbetweentheequipmentandreceiver. --Connecttheequipmentintoanoutletonacircuitdifferentfrom thattowhichthereceiverisconnected. --Consultthedealeroranexperiencedradio/TVtechnicianforhelp. TomaintaincompliancewithFCC’sRFExposureguidelines,Thisequipmentshouldbeinstalled andoperatedwithminimum20cmdistancebetweentheradiatorandyourbody:Useonlythe suppliedantenna.

Lepai (2023.01.10) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Lepai LP-225 12-20 VDC 2 x 25W Mini Bluetooth Amplifier with 3.5mm Line Input and Preamp Line Output / Lepai LP- 225 / FCC ID: 2A9Y2LP-225 ) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☐ Internal Photos ☐ NOTE 1 ☐ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No required to be submitted with this application be permanently withheld from public review. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Signature: Name: Zhang rong rong Title: Product manager

Lepai (2023.01.10) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology Co., Ltd.) 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). This agreement expires one year from the current date. Sincerely, Signature: Name: Zhang rong rong Title: Product manager

External Photos ANT

FCC ID LABEL: Label Location: FCC ID: 2A9Y2LP-225 Model No.: Lepai LP-225

Internal Photos Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB221019055RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 3

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2A9Y2LP-225 Applied procedures / limit According to FCC §15.247(i) and §1.1307(b)(1), 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 of the Commission’s guidelines. 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 Time |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 1500-100,000 5 6 Note: ƒ is frequency in MHz * = Power density limit is applicable at frequencies greater than 100 MHz 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 Time |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 1500-100,000 1.0 30 Note: f = frequency in MHz * = Plane-wave equivalent power density MPE PREDICTION Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 Where: S = power density P = power input to antenna G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna,R=20cm Test Result of RF Exposure Evaluation Modes& Channel Freq. (MHz) Tune up Produce power Maximu m peak output power (dBm) Output power to antenna (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW / cm2 ) Result EDR 8DPSK & HCH 2±1 3 1.9953 1.7947 (2.54dBi) 0.00071 1 Pass

1.ProductApplicati o n/产品应用 2.Date/数据 3.Product Picture/产品图片 4. Product structure drawing/产品结构图 H X W F-2 . 4 G-5 C M小辣椒天线-A N T S p e c i f i c a t i o n s T e s tS y s t e m /测试系统 Test Item/测试项目 Test ItemTest Equipment S11、S12、VSWR 、LOSS...... Network Analyzer E5071C、E5062A Efficiency、Gain 3D Radiation Pattern OTA Chamber、E5071C TRP、TIS OTA Chamber、CMW500、MT8820C、E4438C T e s t s a m p l e a n d e n v i r o n m e n t/测试样品及环境 S p e c i f i c a t i o n/规范 VSWR/LOSS/电压驻波/损失 S p e c i f i c a t i o n/规范 Efficiency /效率Gain/增益 2.4G效率2.4G增益 Frequency/MhEfficiency / % 240053.7 241051.17 242056.89 243052.24 244056.49 245056.89 246054.95 247060.53 248056.75 249061.38 250055.98 Frequency/MHzMaxGain/dBi 24002.26 24101.31 24202.54 24301.55 24402.44 24501.98 24602.15 24702.4 24801.98 24902.58 25001.52 S p e c i f i c a t i o n/规范 3D 图 2.4G S p e c i f i c a t i o n/规范 产品结构图 总长50mm 接头长16.6mm 长8mm

Shenzhen CTB Testing Technology Co., Ltd. Report No.:CTB230104017RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 58 TEST REPORT Compiled by: Reviewed by: Approved by: Chen Zheng Arron Liu Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Product Name: Lepai LP-225 2x25W BT Amplifier w Line Input and Line Output FCC ID: 2A9Y2LP-225 Trademark: Model Number: Lepai LP-225 Prepared For: Lepai Address: 725 Pleasant Valley Drive Springboro, Ohio 45066 United States Manufacturer: Lepai Address: 725 Pleasant Valley Drive Springboro, Ohio 45066 United States Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 1&2/F., Building A, No.26, Xinhe Road, Xinqiao, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: Dec. 30, 2022 Sample tested Date: Dec. 30, 2022 to Jan. 04, 2023 Issue Date: Jan. 04, 2023 Report No.: CTB230104017RFX Test Standards FCC Part15.247 ANSI C63.10:2013 Test Results PASS Remark: This is Bluetooth radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.:CTB230104017RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 58 TABLE OF CONTENT Test Report Declaration Page 1. VERSION .......................................................................... 4 2. TEST SUMMARY ................................................................... 5 3. MEASUREMENT UNCERTAINTY ..................................................... 6 4. PRODUCT INFORMATION AND TEST SETUP .......................................... 7 4.1 Product Information .................................................................... 7 4.2 Test Setup Configuration ............................................................... 7 4.3 Support Equipment .................................................................... 7 4.4 Channel List .......................................................................... 8 4.5 Test Mode ............................................................................ 8 4.6 Test Environment ...................................................................... 8 5. TEST FACILITY AND TEST INSTRUMENT USED ....................................... 9 5.1 Test Facility ........................................................................... 9 5.2 Test Instrument Used .................................................................. 9 6. AC POWER LINE CONDUCTED EMISSION ............................................ 11 6.1 Block Diagram Of Test Setup .......................................................... 11 6.2 Limit ................................................................................ 11 6.3 Test procedure ....................................................................... 11 6.4 Test Result .......................................................................... 13 7. RADIATED SPURIOUS EMISSION ................................................... 15 7.1 Block Diagram Of Test Setup .......................................................... 15 7.2 Limit ................................................................................ 15 7.3 Test procedure ....................................................................... 16 7.4 Test Result .......................................................................... 17 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS .......................... 26 8.1 Block Diagram Of Test Setup .......................................................... 26 8.2 Limit ................................................................................ 26 8.3 Test procedure ....................................................................... 26 8.4 Test Result .......................................................................... 27 9. COUDUCTED PEAK OUTPUT POWER ............................................... 34 9.1 Block Diagram Of Test Setup .......................................................... 34 9.2 Limit ................................................................................ 34 9.3 Test procedure ....................................................................... 34 9.4 Test Result .......................................................................... 35 10. 20DB OCCUPIED BANDWIDTH...................................................... 39 10.1 Block Diagram Of Test Setup ......................................................... 39 10.2 Limit ............................................................................... 39 10.3 Test procedure ...................................................................... 39 10.4 Test Result ......................................................................... 39 11. CARRIERFREQUENCIES SEPARATION .............................................. 43 11.1 Block Diagram Of Test Setup ......................................................... 43 11.2 Limit ............................................................................... 43 11.3 Test procedure ...................................................................... 43 11.4 Test Result ......................................................................... 43 12. HOPPING CHANNEL NUMBER ...................................................... 47 12.1 Block Diagram Of Test Setup ......................................................... 47 12.2 Limit ............................................................................... 47…

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Radiated Emission Below 1G Above 1G Conducted emissions