I've looked at a lot of diagrams online, but I'm just not an electrical engineer. I design structures, not schemes. Well, if I find such pearls, I'm happy. That aside, this device actually works exceptionally well - it's easy to assemble using the manufacturer's instructions, all the parts are fairly cheap and available here at Revain. Turn it on and lo and behold - it works really well. . with some caveats 1) VERY high gain so to speak "out of the box" - but they tell you how to turn it down 2) The mic is omnidirectional - picks up any sound from any direction and tends to drown out everything what you would like to hear. To be honest, I wish the manufacturer would replace it with a cardioid microphone. Those are the only two shortcomings I have, otherwise a great product for little money.
Upgrade Your Laptop With Timetec 16GB DDR4 2133MHz Memory Kit - Non-ECC
32 Review
500W PSU With 80 Plus Bronze Certification For Efficient Power Supply
37 Review
ARESGAME AGK850 - 850W Fully Modular 80Plus Gold Certified Power Supply Unit
32 Review
TEAC CD-RW890MK2-B Home Audio CD Recorder With Bluetooth - Black
38 Review
KLIM CD Boombox Portable Audio Player with FM Radio, Rechargeable Battery, Bluetooth, MP3, AUX, Neodymium Speakers, and Upgraded CD Laser Lens (2021 Edition)
11 Review
AUNA Connect 150 Black 2.1 Wi-Fi Internet Radio Music Player With MP3 USB Port, AUX & Remote Control - Black
16 Review
Stream Your Favorite Tunes With AUNA KR-200 SI Internet Kitchen Radio - Spotify Support, Remote Control, And More!
15 Review
Radio receiver Max MR-322 anthracite
14 Review