2A8DY-CARINAGPAudio amplifier

Carina GaN 1 safety If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. . WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus 2 The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to presence of on-insulated hazard voltage withintheproduct’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock. No naked flame sources, such as lighted candles, should be placed on the apparatus. direct sunlight or excessive heat such as a fire. Care should be taken in the act of WARNING: The terminals marked with symbol of “+/-” may be of sufficient magnitude to constitute a risk of electric shock. The external wiring connected to the terminals requires installation by an instructed person or the use of the ready-made insulated leads of cords. Correct disposal of this product. This marking indicates that this product should not be disposed with other household wastes throughout the EU. To prevent possible harm to the environment or human health from uncontrolled waste disposal, recycle it responsibly to promote the sustainable reuse of material resources. To return your used device, please use the return and collection systems or contact the retailers where the product was purchased. The can take this product for environmentally safe recycling. 3 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. FCC Radiation Exposure Statement This equipment must be installed and operated in accordance with provided instructions and the antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. End-users and installers must be provide with antenna installation instructions and transmitter operating conditions for satisfying RF exposure Carina 5 6 9 10 11 15 Menu Remote Control Front Panel Back Panel Introduction Specifications 4 13 Using Carina as a Power Amplifier 14 Warranty and Repair 5 Thank you for choosing Peachtree Audio! Carina GaN is an integrated amplifier platform designed to please your ears and eyes. Housed in a beautiful chassis crafted of aluminum and wood, Carina is several audio components in one; a Digital-to-Analog Converter (DAC), preamplifier, power amplifier and headphone amplifier. Carina GaN includes audio inputs for multiple sources; USB-C for a computer or mobile device, Bluetooth for wireless devices, two coaxial inputs and one optical input for wired digital audio devices such as streamers or CD transports. Carina GaN also includes a multi- functional analog input with a built-in phono preamplifier for turntables with Moving Magnet (MM) cartridges. This input can even be switched to bypass the internal phono preamp when using an external phono preamp (required for Moving Coil cartridges) or when using the input as a "Home Theater Bypass" for integration with an AVR or preamp/processor! A variable stereo analog output is provided for integration with one or two subwoofers or an external power amplifier. A 12V trigger input and output are provided to automatically power on/off Carina with another device. Internally, Carina GaN features a 32-bit architecture that is capable of handling all of the major digital audio formats available today from compressed audio all the way up to 24-bit/768kHz PCM and DSD512 (22.6MHz aka octuple rate DSD)! Carina GaN utilize two separate ESS 9068 DAC chips in "mono mode" with one dedicated to the left channel and the other to the right channel to maximize the signal-to-noise ratio, dynamic range and channel separation of the system. The menu provides access to primary DAC settings for fine-tuning the sound even further. The internal analog architecture of Carina is fully balanced so audio signals are protected from external sources of noise and interference. Carina GaN utilizes a Gallium-Nitride "power DAC" amplifier to achieve remarkable transparency and sound quality. It is driven directly by the digital output of the DSP and does NOT utilize a feedback loop which alters the audio signal driving the speakers. The audible improvement is immediately noticeable and significant, even to a casual listener. The DAC section in Carina GaN provides the analog signal for the headphone amplifier and the preamplifier output. This novel implementation of a GaN-FET power DAC in an integrated amplifier results in sound quality that was previously only attainable by much larger, heavier and more expensive solutions. Carina GaN is capable of driving speakers with a nominal impedance between 2.5 to 16 and have ample power to properly drive the vast majority of speakers available today to their full potential while delivering deep, tight bass and transparent, natural upper frequencies that do NOT induce listener fatigue. Carina GaN also features a premium-quality, fully-balanced headphone (HP) amplifier that provides an exceptional listening experience through headphones. It has an extremely low noise floor so the music is reproduced clearly and cleanly. The HP amplifier includes a traditional 1/4" unbalanced output and a 4.4mm T/R/R/R/S "pentaconn" output for balanced headphones. The headphone amplifier is not just provided as a convenience, it is designed as a high-performance internal component that compares favorably with stand-alone devices. Please continue reading this manual and visit www.peachtreeaudio.com to register your unit to extend your warranty at no charge! Your infor…

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C566091_X23_Ed2 1/1 US Agent for Service of Process LETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company Name: Signal Path International DBA Peachtree Audio FRN: 0032778409 Contact Name: rhondas Simpson Address: 13087 Bleinheim Lane, Suite C, Matthews, NC 28105, USA Telephone No: 704-391-9337 Email: [email protected] This letter is to confirm that the US Agent for Service of Process accepts responsibility to act as a local representative on behalf of (Signal Path International DBA Peachtree Audio). The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Applicant: Company name: Signal Path International DBA Peachtree Audio Product Description: Audio amplifier Grantee code: 2A8DY FCC ID: 2A8DY-CARINAGP Contact Name: rhondas Simpson Address: 13087 Bleinheim Lane, Suite C, Matthews, NC 28105, USA Telephone No: 704-391-9337 Email: [email protected] The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Date: 2023/10/16 Applicant’s Name: Signal Path International DBA Peachtree Audio US Agent’s Name: Signal Path International DBA Peachtree Audio. Title:Manager Title: General Manager Signature Signature

C5266091_X24_Ed.2 1/1 “Attestation Statements” TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 The Commission adopted rules that prohibit equipment authorization for “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List 1 , which is periodically updated. See the Covered List for more details. This Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) Applicant Company name: Signal Path International DBA Peachtree Audio Grantee code: 2A8DY FCC ID: 2A8DY-CARINAGP Contact Name: rhondas Simpson Address: 13087 Bleinheim Lane, Suite C, Matthews, NC 28105, USA Telephone: 704-391-9337 E-mail: [email protected] [Signal Path International DBA Peachtree Audio] (“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. The applicant must sign this certification. i. [Signal Path International DBA Peachtree Audio] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant [ is not] (as a specifically named entity or any of its subsidiaries or affiliates) identified on the Covered List as an entity producing “covered” equipment. The applicant must sign this certification. [Signal Path International DBA Peachtree Audio] (“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 . Date: 2023/10/16 Applicant’s Name: rhondas Simpson Title: Manager Signature 1 The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist

Signal Path International DBA Peachtree Audio Product Similarity Declaration Product name: Audio amplifier Model name: Carina GaN, Carina Pre FCC ID: 2A8DY-CARINAGP We (Signal Path International DBA Peachtree Audio.) 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.,), the only difference is model names and colors. Signature: Name: rhondas Simpson Title: Manager Date: 2023.10.16

C5266091_X8_Ed.1 1/1 Letter of Authorization Signal Path International DBA Peachtree Audio Company: Signal Path International DBA Peachtree Audio Address: 13087 Bleinheim Lane, Suite C, Matthews, NC 28105, USA Product Name: Audio amplifier Model Number: Carina GaN, Carina Pre FCC Identifier: 2A8DY-CARINAGP We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: rhondas Simpson Date: 2023.10.16 Title: Manager Signature of applicant:

C5266091_X10_Ed.2 1/1 Signal Path International DBA Peachtree Audio Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2023.10.16 Subject: Request for Confidentiality FCC ID: 2A8DY-CARINAGP To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. 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 NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. 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. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of _180_ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: rhondas Simpson Title: Manager

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30MM*50MM Model: Carina GaN FCC ID: 2A8DY-CARINAGP Input: AC 100-120V/AC200-240V 50/60Hz 520W Signal Path International DBA Peachtree Audio ASSEMBLED IN USA Label

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FCC ID: 2A8DY-CARINAGP 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 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. FCC ID: 2A8DY-CARINAGP Test Result of RF Exposure Evaluation The source of the evaluation data results is based on the test report ET-23080957E BT Antenna gain=5dBi FOR BLE Mode Output power (dBm) Output power (mW) Numeric antenna gain Power Density at R=20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result GFSK 0.71 1.18 3.16 0.0008 1.0 PASS π/4-DQPSK 0.96 1.25 3.16 0.0009 1.0 PASS 8-DPSK 1.27 1.34 3.16 0.0010 1.0 PASS 1. 8-DPSK Total power density=0.0010/1=0.0010<1. Then SAR evaluation is not require .

ElectricalElectrical PropertiesProperties Frequency 2400~2500MHz Impedance 50 Ohm V.S.W.R 1.92: 1 Max Gain (Peak) 5dBi PolarizationOmni directional Connector SMA MALE Physical Properties Antenna Material TPEE / PC /Cu Operating Temp. -20 ~ +70 ?C Storage Temp . -20 ~ +75?C Cable Type. / Aosiya AgilentE5071B 45 90 135 0 -10 -20 30 0180 225 270 315 0-10-20 -30 -30 -40 -40 RP SMA- FEMALE Manuafacture Producted name BT/WIFI Antenna Dongguan AOSIYA Antenna Technology Co., Ltd. Addr. DeLong Rd #7,Shatou Administration Zone, Changan Town,Dongguan Aosiya

Report No.: ET-23080957E This test report is valid for the tested samples only. It cannot be reproduced except in full without prior written consent of Shenzhen ETR Standard Technology Co., Ltd. TEST REPORT Applicant: Signal Path International DBA Peachtree Audio Address of Applicant: 13087 Bleinheim Lane, Suite C, Matthews, NC 28105, USA Manufacturer/Factory: Signal Path International DBA Peachtree Audio Address of Manufacturer/Factory: 13087 Bleinheim Lane, Suite C, Matthews, NC 28105, USA Product Name: Audio amplifier Model No.: Carina GaN, Carina Pre Trade Mark: Peachtree Audio FCC ID: 2A8DY-CARINAGP Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Date of Test: Aug.28, 2023-Oct.08, 2023 Date of report issued: Oct.16, 2023 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Remark: The results shown in this test report refer only to the sample(s) tested , this test report cannot be reproduced, except in full without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver Prepared By Shenzhen ETR Standard Technology Co., Ltd. Address: No.103, No.10, Phase I, Zone 3, Xinxing Industrial Park, Xinhe, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Compiled by: Reviewed by: Approved by: Project Engineer Project Manager Authorized Signature - Page 2 of 47 - Report No.: ET-23080957E Report Revision History Report No. Description Issue Date ET-23080957E Original Oct.16, 2023 - Page 3 of 47 - Report No.: ET-23080957E Tel:(86-755) 85259392 Email:[email protected] Web: www.etrlab.cn No.103, No.10, Phase I, Zone 3, Xinxing Industrial Park, Xinhe, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Contents Page 1 TEST SUMMARY ......................................................................................................................................4 2 GENERAL INFORMATION .......................................................................................................................5 2.1 GENERAL DESCRIPTION OF EUT ..........................................................................................................5 2.2 TEST MODE .........................................................................................................................................7 2.3 DESCRIPTION OF SUPPORT UNITS ........................................................................................................7 2.4 DEVIATION FROM STANDARDS ..............................................................................................................7 2.5 ABNORMALITIES FROM STANDARD CONDITIONS ....................................................................................7 2.6 TEST FACILITY.....................................................................................................................................7 2.7 TEST LOCATION...................................................................................................................................7 2.8 ADDITIONAL INSTRUCTIONS ..................................................................................................................7 3 TEST INSTRUMENTS LIST ......................................................................................................................8 4 TEST RESULTS AND MEASUREMENT DATA .......................................................................................9 4.1 ANTENNA REQUIREMENT ......................................................................................................................9 4.2 CONDUCTED EMISSIONS ....................................................................................................................10 4.3 CONDUCTED PEAK OUTPUT POWER ...................................................................................................13 4.4 20DB EMISSION BANDWIDTH ..............................................................................................................14 4.5 CARRIER FREQUENCIES SEPARATION .................................................................................................18 4.6 HOPPING CHANNEL NUMBER .............................................................................................................22 4.7 DWELL TIME ......................................................................................................................................24 4.8 BAND EDGE.......................................................................................................................................29 4.8.1 Conducted Emission Method ......................................................................................................29 4.8.2 Radiated Emission Method .........................................................................................................33 4.9 SPURIOUS EMISSION .........................................................................................................................35 4.9.1 Conducted Emission Method ......................................................................................................35 4.9.2 Radiated Emission Method .........................................................................................................39 5 TEST SETUP PHOTO .............................................................................................................................47 6 EUT CONSTRUCTIONAL DETAILS .......................................................................................................47 - Page 4 of 47 - Report No.: ET-23080957E Tel:(86-755) 85259392 Email:[email protected] Web: www.etrlab.cn No.103, No.10, Phase I, Zone 3, Xinxing Industrial Park, Xinhe, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China 1 Test Summary Test Item Section in CFR 47 Result Test by Antenna Requirement 15.203/15.247 (c) Pass / AC Power Line Co…

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ET-23080957 Page 1 of 2 Product Name: Audio amplifier Test Model No.: Carina GaN Test Setup Photo Radiated emissions 30MHz to1GHz Above 1GHz ET-23080957 Page 2 of 2 Conducted Emission ------End------