O7V-MA104210Caspian 4G Streaming Amplifier / Integrated Amplifier

Caspian Streaming and Integrated Manual Introduction the new caspian takes on a whole new direction for Roksan. The new amplifiers have been built and designed on the colabortation of years of Roksan and Monitor Audio engineering knowledge and combined them into what you see today. A solid, reliable, powerful line up of products for any scneario. monitoraudio.com1 English Contents Introduction 1 Directives 2 AC Mains Supply 2 Maintenance 2 Location 2 Front Panel Indicators and Controls 3 Streamer 3 Integrated Amp 3 Rear Panels & Connections 4 Remote 5 Input Connections 6 Phono Inputs 6 RCA Analogue Inputs 6 Balanced XLR Inputs 6 HDMI ARC Input 6 Ethernet/ LAN 6 USB Input 6 Phono Ground 6 IR Input 6 12v Trigger 7 Digital Inputs 7 Power 7 Output Connections 7 Balanced XLR Outputs - Pre Out 1 7 RCA Analogue Outputs - Pre Out 2 & 3 7 Loudspeakers 7 Using the Amplifier 8 Power Cycle 8 Connecting to the Wi-Fi 8 MaestroUnite App 8 Selecting an Input 9 Bluetooth 9 Caspian Menu 10 Auto On 10 Auto Standby 10 Balance 10 Sensitivity 10 Power Amplifier Toggle 10 Reset Audio Settings 10 Factory Reset 10 Serial Number 11 Firmware & Hardware versions 11 Firmware Update 11 BluOs Version & Status 11 BluOS USB Upgrade 11 Caspian MAC Addresses, BluOS Wi-Fi MAC and IP Address, BluOS Ethernet MAC address 11 MU Settings and Controls 11 Adding an Anthra Subwoofer 11 Adding an Attessa CDt 11 Adding Power Amp 11 DSP Processing/ Profiles/ Features 11 BluOS Playback 12 MaestroUnite Features and Controls 12 Main Screen 12 Standby Control 12 Audio 12 Play Controls 13 Tilt 13 Audio Misc 13 Crossover 13 Room EQ 13 Speaker Preset Pre 13 Speaker Preset Main 13 Auto On 13 Auto Standy 13 Inputs 14 Rokbus 14 BluOS 14 Language 14 OTA 14 Fault Reports 14 Changing Remote Battery 14 Factory Reset 15 Trouble Shooting 15 MaestroUnite Control 15 Front Panel Indicators and Controls Streamer 12 3 45 1. Track control buttons 2. Source Indication Display 3. Ring Display 4. Volume Control and Source Selection 5. Volume Display Integrated Amp 1234 1. Source Indication Display 2. Ring Display??? 3. Volume Control and Source Selection 4. Volume Display Caspian2Roksan.co.uk3 Directives Monitor Audio Group declares that the apparatus “Caspian Streaming Amplifier”, “Caspian Integrated Amplifier” and “Caspian POwer Amplifier”. in conformity with the essential requirements and other relevant provisions of Directive 2014/53/EU ”. NOTE: This product must be earthed. Please ensure that other equipment connected to it is earthed according to the manufacturer’s instructions. Monitor Audio Group declare in own responsibility, that the Monitor Audio products described in this manual is in compliance with the following Standards and is in conformity with the essential requirements of the Radio Equipment Regulations 2017. AC Mains Supply Your Caspian Amplifier is set to operate from a fixed supply voltage which is marked on a label next to the mains input plug. The mains lead supplied with this product has an IEC C13 mains plug which is inserted into the Mains Input Socket on the unit’s rear panel. The other end is a moulded plug appropriate to that for your country. If your lead has been damaged please obtain a complete replacement lead from your dealer. Should you move to another area where either the mains voltage or the mains plugs are different from those as supplied with your product, please contact the appointed Roksan distributor for assistance. Please observe correct mains polarity at all times. The mains fuses are located on the rear panel below the IEC Mains Input Socket. These must only be replaced by the fuse type and rating as described on the fuse rating label on the rear panel of the unit. If the equipment is likely to be unused for some time, unplug it from the mains supply. NOTE: This unit contains no user serviceable parts. Do not remove any panels or attempt to service it yourself. Unauthorised servicing will void the warranty. Maintenance After disconnecting the product from the mains supply, the casing and front panel may be cleaned with a lightly dampened lint-free cloth. Furniture polish can also be used to clean the amplifier. Avoid using abrasive substances or solvents. Location Your amplifier should be located in a well ventilated area and kept away from sources of heat, dust, humidity and direct sunlight. The amplifier may be positioned either as a free standing unit or alongside other audio/video product(s). Never place the amplifier under other electronic equipment, carpet or on any surface likely to hinder normal ventilation. Never allow liquids or other objects to fall into the unit. We recommend a minimum of 25mm air space all around the amplifiers. If you have an Integrated or Streaming Amplifier and Power Amplifier do not place them on top of each other. They should be sited on different shelves of the equipment rack, or side by side. English Remote 1 3 4 2 5 6 7 8 10 12 13 14 11 9 1. Mute 2. Volume Up 3. Previous Track/ Scan Backwards 4. Volume Down 5. Repeat - Hold for Shuffle 6. Presets 1, 2 & 3 7. Previous Input 8. Standby 9. Play/ Pause 10. Next Track/ Scan Forward 11. OSD menu 12. Stop/ Eject 13. Next Input 14. Battery Drawer Rear Panels & Connections Streaming & Integrated Amplifier 89 10111213141517168 213 4 56 7 1. Phono MM & MC Inputs 2. RCA Analogue Inputs 3. Balanced XLR Analogue Inputs 4. Dual Band Wi-Fi Antenna (Streaming Amp Only) 5. HDMI ARC Input (Streaming Amp Only) 6. LAN wired Connection (Streaming Amp Only) 7. USB Input (Streaming Amp Only) 8. Loudspeaker Outputs 9. Phono Ground 10. XLR Analogue Pre Amplifier Outputs 11. RCA Pre Amplifier Outputs 12. RCA Pre Amplifier/ Subwoofer Outputs 13. IR Remote Input 14. 12v Trigger Output 15. Coaxial and Optical (SPDIF) Inputs 16. Bluetooth Antenna 1 7. Mains input and fuse Refer to pages 6 and 7 for further descriptions on the inputs and outputs. English Caspian4Roksan.co.uk5 English Input Connections Phono Inputs The Caspian amplifier has both a Moving Co…

Text truncated - open the document above for the full version.

Internal Photographs J14745 part 1 Unless otherwise indicated all boards are fitted into both model variants, Streaming Amplifier model and Integrated Amplifier model ZCAS4GADCPCB - Caspian 4G ADC Mezz INT-STR PCB TOP.JPEG ZCAS4GADCPCB - Caspian 4G ADC Mezz INT-STR PCB BOTTOM.JPEG ZCAS4GEAPCB - Caspian 4G Encoder PCB TOP.JPEG ZCAS4GEAPCB - Caspian 4G Encoder PCB BOTTOM.JPEG ZCAS4GEUPPCB - Caspian 4G EUP_MW Assembly TOP.JPEG ZCAS4GEUPPCB - Caspian 4G EUP_MW Assembly BOTTOM.JPEG ZCAS4GFSPCB - Caspian 4G Fascia STR PCB TOP.JPEG ZCAS4GFSPCB - Caspian 4G Fascia STR PCB BOTTOM.JPEG ZCAS4GHEATSINK - Caspian 4G Power Amplifier PCB TOP.JPEG ZCAS4GHEATSINK - Caspian 4G Power Amplifier PCB BOTTOM.JPEG

Test set-up photos J14745-9 and -10 1.1 Radiated emissions 9 - 150 kHz 1.2 Radiated emissions 150 kHz - 30 MHz 1.3 Radiated emissions 30 MHz -1 GHz 1.4 Radiated emissions above 1 GHz

Test set-up photos J14745-3 and -4 1.1 AC power line conducted emissions 1.2 Radiated emissions 9 - 150 kHz 1.3 Radiated emissions 150 kHz - 30 MHz 1.4 Radiated emissions 30 MHz -1 GHz 1.5 Radiated emissions above 1 GHz

Page 1 of 50 File Name: Monitor Audio Group.14745-22 Summary Issue 01 QMF21J - Issue 05 - KEC Issue 02 REPORT NUMBER: 10-14745-22-25 Summary Issue 01 Arnolds Court, Arnolds Farm Lane, Brentwood, Essex, CM13 1UT, UK Antenna Testing for Caspian 4G antenna performance Applicant Monitor Audio Group Equipment Name Antenna 1 = Antenna Part Number: 116559 A.1 10/28/2025 Antenna 2 = Antenna Part Number: 104699 A.5 08/12/2023 Date of assessment 23rd - 24th October 2025 Test Engineer Chee-Wah Yeung Approved by: Radio Approvals Manager ©2025 Kiwa Ltd t/a Kiwa Electrical Compliance REPORT NUMBER: 10-14745-22-25 Summary Issue 01 ALL RIGHTS RESERVED Page 2 of 50 File Name: Monitor Audio Group.14745-22 Summary Issue 01 QMF21J - Issue 05 - KEC Issue 02 1 Contents 1 Contents ............................................................................................................................................................ 2 2 Methodology ...................................................................................................................................................... 3 3 Polar plots and Antenna Gain (dBi) .................................................................................................................. 4 3.1Antenna 1, Test 1a .................................................................................................................................. 4 3.2Antenna 2, Test 1b ................................................................................................................................ 11 3.3Antenna 1, Test 2a ................................................................................................................................ 18 3.4Antenna 2, Test 2b ................................................................................................................................ 25 3.5Antenna 1, Test 3a ................................................................................................................................ 32 4 – ID and test set-up photos ................................................................................................................................ 39 4.1EUT Front View ..................................................................................................................................... 39 4.2EUT Rear View ..................................................................................................................................... 40 4.3Antenna locations in rear panel ............................................................................................................ 41 4.4Test set up............................................................................................................................................. 42 4.5EUT Antenna Port ................................................................................................................................. 45 4.6EUT Antenna Locations ........................................................................................................................ 46 5 Test Equipment used ....................................................................................................................................... 49 6 Revision History ............................................................................................................................................... 50 ©2025 Kiwa Ltd t/a Kiwa Electrical Compliance REPORT NUMBER: 10-14745-22-25 Summary Issue 01 ALL RIGHTS RESERVED Page 3 of 50 File Name: Monitor Audio Group.14745-22 Summary Issue 01 QMF21J - Issue 05 - KEC Issue 02 2 Methodology Method The antennas (EUT) were tested in a semi anechoic chamber. High frequency absorber was in place on the chamber floor. The EUT was positioned on a turntable 1.5m high and the measuring antenna was placed at a distance of 3 metres. 5 tests were performed: Test 1a: Antenna 1 fitted to Caspian 4G Streaming unit’s rear panel (rear panel not fitted to Caspian 4G Product) measurements made on BluOS positioned Antenna. Test 1b: Antenna 2 fitted to Caspian 4G Streaming unit’s rear panel (rear panel not fitted to Caspian 4G Product) measurements made on BTC positioned Antenna. Note: Antenna 2 is 90⁰ difference in position to Test 2a: Antenna 1 fitted to Caspian 4G Streaming unit’s rear panel with rear panel Fitted to Caspian 4G Product) measurements made on BluOS positioned Antenna. Test 2b: Antenna 2 fitted to Caspian 4G Streaming unit’s rear panel with rear panel Fitted to Caspian 4G Product) measurements made on BTC positioned Antenna. Test 3a: Antenna 1 fitted facing down in Caspian 4G chassis (used for ESP32 (BLE/2.4 WiFi) so the Caspian 4G amplifier was positioned on its side to enable testing (See photos). Note: this antenna is the same as Antenna tested in test 1b above, but the antenna is fitted facing down in to the Caspian 4G chassis, so was only tested in the chassis. Each of the antennas in turn was fed via a coaxial cable with an RF power level of -20dBm at the signal generator output. The EUT backplane with Antennas fitted was positioned in its normal use position while being rotated 360⁰ (azimuth) and aligned with boresight of the measuring horn Antenna. For tests where the EUT backplane was fitted into EUT chassis the same position and azimuth rotation was performed- unless stated. Refer to photo section for photos of rear panel/EUT antennas positions. The ”Standard” antenna (2) is mounted such that it is cross polarised in relation to the “Standard -5 dB antenna” (1). This necessitates horizontal results on one antenna be compared to vertical results on the other antenna and vice versa. Measurements were made with the measuring antenna in vertical polarisation and then repeated for horizontal polarisation. In all cases the EUT was adjusted in elevation angle to ensure maximised Gain measurement – maximised elevation position was directly in line with the Antenna (i.e. 0 degrees elevation)…

Text truncated - open the document above for the full version.

Page 1 of 67 File Name: Monitor Audio Group.14745-9 Issue 01 QMF21J - Issue 05 - KEC Issue 02; 47 CFR Part 15.247 2024 Radio Test Report Monitor Audio Ltd Caspian 4G Integrated Amplifier 47 CFR Part 15.247 Effective Date 1st October 2024 DSS: Part 15 Spread Spectrum Transmitter Test Date: 17th September 2025 to 30th September 2025 Report Number: 09-14745-9-25 Issue 01 The testing was carried out by Kiwa Ltd trading as Kiwa Electrical Compliance, an independent test house, at their test facility located at: Kiwa Ltd, Kiwa Electrical Compliance Arnolds Court Arnolds Farm Lane Mountnessing Essex CM13 1UT U.K. www.Kiwa.com Telephone: +44 (0) 1277 352219 Email: [email protected] This laboratory is accredited in accordance with the recognised International Standard ISO/IEC 17025. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer joint ISO-ILAC-IAF communiqué dated April 2017). This report is not to be reproduced by any means except in full and in any case not without the written approval of Kiwa Electrical Compliance. ©2025 Kiwa Ltd t/a Kiwa Electrical Compliance REPORT NUMBER: 09-14745-9-25 Issue 01 ALL RIGHTS RESERVED Page 2 of 67 File Name: Monitor Audio Group.14745-9 Issue 01 QMF21J - Issue 05 - KEC Issue 02; 47 CFR Part 15.247 2024 Arnolds Court, Arnolds Farm Lane, Mountnessing, Brentwood Essex, CM13 1UT Certificate of Test 14745-9 The equipment noted below has been partially tested by Kiwa Electrical Compliance and, where appropriate, conforms to the relevant subpart of 47 CFR Part 15.247. This is a certificate of test only and should not be confused with an equipment authorisation. Other standards may also apply. Equipment: Caspian 4G Integrated Amplifier Model Number: Integrated Amplifier Unique Serial Number: 4332426100005 Applicant:Monitor Audio Ltd Unit 2 24 Brook Road Rayleigh, Essex SS6 7XJ UK Proposed FCC ID: O7V-MA102410 Full measurement results are detailed in Report Number: 09-14745-9-25 Issue 01 Test Standards: 47 CFR Part 15.247 Effective Date 1st October 2024 DSS: Part 15 Spread Spectrum Transmitter NOTE: With reference to the Rule part detailed, not all tests within the Rule part have been applied at the request of the applicant. The following tests have not been performed at the applicant's request: AC power line conducted emissions, Occupied bandwidth, Maximum Average conducted output power, Maximum Peak conducted output power, Maximum Power Spectral Density, Duty cycle, FHSS carrier frequency separation, Average time of occupancy, Number of Hop Channels. Certain tests were not performed based upon applicant's declarations. Certain other requirements are subject to applicant's declaration only and have not been tested/verified. For details refer to section 3 of this report. This report pertains to the BTC functionality of the Integrated Amplifier. For BTC functionality of the Streaming Amplifier please refer to KEC report number 08-14745-3-24. Contains FCC ID: 2AC7Z-ESPWROOM32UE. DEVIATIONS: No tests have had deviations applied. This certificate relates only to the unit tested as identified by a unique serial number and in the condition at the time it was tested. It does not relate to any other similar equipment and performance of the product before or after the test cannot be guaranteed. Whilst every effort is made to assure quality of testing, type tests are not exhaustive and although no non-conformances may be found, this doesn't exclude the possibility of unit not meeting the intentions of the standard or the requirements of the Federal Regulations, particularly under different conditions to those during testing. Any compliance statements are made reliant on (a) the application of the product and use of the assigned band being acceptable to the FCC and (b) the modes of operation as instructed to us by the Customer based on their specific knowledge of the application and functionality of the EUT. Statements of compliance, where measurements were made, do not include the measurement uncertainty. The measurement uncertainty, where stated, is the expanded uncertainty based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95%. Date of Test: 17th September 2025 to 30th September 2025 Test Engineer: Chee-Wah Yeung Approved By: Radio Approvals Manager ©2025 Kiwa Ltd t/a Kiwa Electrical Compliance REPORT NUMBER: 09-14745-9-25 Issue 01 ALL RIGHTS RESERVED Page 3 of 67 File Name: Monitor Audio Group.14745-9 Issue 01 QMF21J - Issue 05 - KEC Issue 02; 47 CFR Part 15.247 2024 1 Contents 1 Contents ............................................................................................................................................................. 3 2 Equipment under test (EUT) .............................................................................................................................. 5 2.1 Equipment specification ............................................................................................................................. 5 2.2 Applicant declarations for testing ............................................................................................................... 6 2.3 Functional description ................................................................................................................................ 8 2.4 Modes of operation ..................................................................................................................................... 8 2.5 Emissions configuration ............................................................................................................................. 9 3 Summary of test results ................................................................................................................................... 12 4 Specifications .........................................................................…

Text truncated - open the document above for the full version.

Page 1 of 165 File Name: Monitor Audio Group.14745-3 Issue 02 QMF21J - Issue 05 - KEC Issue 04; 47 CFR Part 15.247 2024 Radio Test Report Monitor Audio Ltd Caspian 4G Streaming Amplifier 47 CFR Part 15.247 Effective Date 1st October 2024 DSS: Part 15 Spread Spectrum Transmitter Test Dates: 12th July 2024 to 16th August 2024 and 15th July 2025 to 18th July 2025 Report Number: 08-14745-3-24 Issue 02 Supersedes Report Number: 08-14745-3-24 Issue 01 The testing was carried out by Kiwa Ltd trading as Kiwa Electrical Compliance, an independent test house, at their test facility located at: Kiwa Electrical Compliance Arnolds Court Arnolds Farm Lane Mountnessing Essex CM13 1UT U.K. www.Kiwa.com Telephone: +44 (0) 1277 352219 Email: [email protected] This laboratory is accredited in accordance with the recognised International Standard ISO/IEC 17025. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer joint ISO-ILAC-IAF communiqué dated April 2017). This report is not to be reproduced by any means except in full and in any case not without the written approval of Kiwa Electrical Compliance. ©2025 Kiwa Electrical Compliance REPORT NUMBER: 08-14745-3-24 Issue 02 ALL RIGHTS RESERVED Page 2 of 165 File Name: Monitor Audio Group.14745-3 Issue 02 QMF21J - Issue 05 - KEC Issue 04; 47 CFR Part 15.247 2024 Arnolds Court, Arnolds Farm Lane, Mountnessing, Brentwood Essex, CM13 1UT Certificate of Test 14745-3 The equipment noted below has been fully tested by Kiwa Electrical Compliance and, where appropriate, conforms to the relevant subpart of 47 CFR Part 15.247. This is a certificate of test only and should not be confused with an equipment authorisation. Other standards may also apply. Equipment: Caspian 4G Streaming Amplifier Model Number: Streaming Amplifier Unique Serial Number: 4292415000001 Applicant: Monitor Audio Ltd Unit 2 24 Brook Road Rayleigh Essex SS6 7XJ UK Proposed FCC ID: O7V-MA102410 Full measurement results are detailed in Report Number: 08-14745-3-24 Issue 02 Test Standards: 47 CFR Part 15.247 Effective Date 1st October 2024 DSS: Part 15 Spread Spectrum Transmitter NOTE: With reference to the Rule part detailed, not all tests within the Rule part have been applied at the request of the applicant. Certain tests were not performed based upon applicant's declarations. Certain other requirements are subject to applicant's declaration only and have not been tested/verified. For details refer to section 3 of this report. This report pertains only to the BTC functionality of the Streaming Amplifier. For BTC functionality of the Integrated Amplifier please refer to KEC report number 09-14745-9-25. Equipment also Contains FCC ID’s: 2AC7Z-ESPWROOM32UE and 2AATL-8223A-SR. Testing performed between dates 15 th -18 th July 2025 was for intermodulation radiated emissions 1-40GHz. All other tests performed between the dates 12 th July and 16 th August 2024. DEVIATIONS: No deviations have been applied. This certificate relates only to the unit tested as identified by a unique serial number and in the condition at the time it was tested. It does not relate to any other similar equipment and performance of the product before or after the test cannot be guaranteed. Whilst every effort is made to assure quality of testing, type tests are not exhaustive and although no non-conformances may be found, this doesn't exclude the possibility of unit not meeting the intentions of the standard or the requirements of the Federal Regulations, particularly under different conditions to those during testing. Any compliance statements are made reliant on (a) the application of the product and use of the assigned band being acceptable to the FCC and (b) the modes of operation as instructed to us by the Customer based on their specific knowledge of the application and functionality of the EUT. Statements of compliance, where measurements were made, do not include the measurement uncertainty. The measurement uncertainty, where stated, is the expanded uncertainty based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95%. Date of Test: 12th July 2024 to 16th August 2024and 15th July 2025 to 18th July2025 Test Engineer: Chee-Wah Yeung Approved By: Radio Approvals Manager ©2025 Kiwa Electrical Compliance REPORT NUMBER: 08-14745-3-24 Issue 02 ALL RIGHTS RESERVED Page 3 of 165 File Name: Monitor Audio Group.14745-3 Issue 02 QMF21J - Issue 05 - KEC Issue 04; 47 CFR Part 15.247 2024 1 Contents 1 Contents ............................................................................................................................................................. 3 2 Equipment under test (EUT) .............................................................................................................................. 5 2.1 Equipment specification ............................................................................................................................. 5 2.2 Configurations for testing ........................................................................................................................... 6 2.3 Functional description ................................................................................................................................ 8 2.4 Modes of operation ..................................................................................................................................... 8 2.5 Emissions configuration ............................................................................................................................. 9 3 Summary of test results ................................................................................................................................... 12 4 Specifications ....................................................................................................................…

Text truncated - open the document above for the full version.

1 (8) Copyright © Verkotan 2025 Document ID: FCC_RF Exposure Evaluation_Caspian 4G Amplifier_ID7678_25112025.docx RF Exposure Evaluation Report Date of Report: 25/11/2025 Client’s Contact person: Thomas Fall Number of pages: 8 Responsible Test engineer: Ilari Kinnunen Testing laboratory: Verkotan Oy Elektroniikkatie 17 90590 Oulu Finland Client: Monitor Audio Ltd 24 Brook Road Rayleigh, Essex SS6 7XJ UK Tested device: Caspian 4G Streaming Amplifier / Caspian 4G Integrated Amplifier Related reports: - Testing has been carried out in accordance with: 47CFR §2.1091 Radiofrequency Radiation Exposure Evaluation: Mobile Devices FCC published RF exposure KDB procedures 447498 D04 Interim General RF Exposure Guidance v01 Documentation: The test report must always be reproduced in full; reproduction of an excerpt only is subject to written approval of the testing laboratory Test Results: The EUT complies with the requirements in respect of all parameters subject to the test. The test results relate only to devices specified in this document Date and signatures: 25.11.2025 Laboratory Manager 2 (8) Copyright © Verkotan 2025 Document ID: FCC_RF Exposure Evaluation_Caspian 4G Amplifier_ID7678_25112025.docx TABLE OF CONTENTS 1. EVALUATION SUMMARY ......................................................................................................................... 3 1.1 TEST DETAILS ........................................................................................................................................................................... 3 1.2 EVALUATION RESULTS ......................................................................................................................................................... 4 1.2.1 Standalone Exposure ....................................................................................................................................................... 4 1.2.2 Simultaneous Transmission Exposure ....................................................................................................................... 4 2. DESCRIPTION OF THE DEVICE UNDER TEST (DUT) ............................................................................... 5 2.1 SUPPORTED FREQUENCY BANDS AND OPERATIONAL MODES ........................................................................ 5 3. TEST EXCLUSIONS .................................................................................................................................... 6 4. RESULTS .................................................................................................................................................... 7 4.1 STANDALONE EXPOSURE ................................................................................................................................................... 7 4.2 SIMULTANEOUS TRANSMISSION ANALYSIS .............................................................................................................. 8 3 (8) Copyright © Verkotan 2025 Document ID: FCC_RF Exposure Evaluation_Caspian 4G Amplifier_ID7678_25112025.docx 1. EVALUATION SUMMARY 1.1 Test Details Device under Test (DUT): Product: Caspian 4G Streaming Amplifier / Caspian 4G Integrated Amplifier Manufacturer: Monitor Audio Model: Streaming Amplifier / Integrated Amplifier Hardware Version: V0.5.145 FCC ID: Contains FCC ID: O7VMA104210 Contains FCC ID: FCC ID: 2AC7Z-ESPWROOM32UE Contains FCC ID: 2AATL-8223A-SR Mobile/Portable device: Mobile FCC Test Firm Designation Number: FI0005 Document ID: FCC_RF Exposure Evaluation_Caspian 4G Amplifier_ID7678_25112025.docx Document History: - 4 (8) Copyright © Verkotan 2025 Document ID: FCC_RF Exposure Evaluation_Caspian 4G Amplifier_ID7678_25112025.docx 1.2 Evaluation Results 1.2.1 Standalone Exposure The device conforms to the requirements of the standards when the maximum ERP is less than or equal to the Test Exclusion Threshold Limit. Mode of Operation Maximum ERP [mW] Separation Distance [mm] MPE-Based Exemption threshold [mW] Evaluation Result Bluetooth, Module 1 8.91 200 768 PASS Bluetooth Low Energy, Module 2 4.47 200 768 PASS WLAN 2.4 GHz, Module 2 55.21 200 768 PASS WLAN 2.4 GHz. Module 3 76.21 200 768 PASS WLAN 5 GHz, Module 3 66.07 200 768 PASS 1.2.2 Simultaneous Transmission Exposure Highest Simultaneous Transmission SAR ∑ERP j / ERP th,j Limit Evaluation Result Bluetooth, Module 1 + BLE, Module 2 + 2.4 GHz WLAN, Module 3 0.12 1 PASS 5 (8) Copyright © Verkotan 2025 Document ID: FCC_RF Exposure Evaluation_Caspian 4G Amplifier_ID7678_25112025.docx 2. DESCRIPTION OF THE DEVICE UNDER TEST (DUT) The DUT is a Stereo Audio Amplifier that supports 2.4 GHz and 5 GHz WLAN, Bluetooth LE and Bluetooth Classic wireless technologies. DUT contains three different modules that are used as follows: • Module 1: Module with FCC ID “O7VMA104210” is used for Bluetooth. • Module 2: Module with FC…

Text truncated - open the document above for the full version.